<86>Nov 29 04:58:45 userdel[1321241]: delete user 'rooter'
<86>Nov 29 04:58:45 groupadd[1321257]: group added to /etc/group: name=rooter, GID=1304
<86>Nov 29 04:58:45 groupadd[1321257]: group added to /etc/gshadow: name=rooter
<86>Nov 29 04:58:45 groupadd[1321257]: new group: name=rooter, GID=1304
<86>Nov 29 04:58:45 useradd[1321270]: new user: name=rooter, UID=1304, GID=1304, home=/root, shell=/bin/bash, from=none
<86>Nov 29 04:58:45 userdel[1321287]: delete user 'builder'
<86>Nov 29 04:58:45 userdel[1321287]: removed group 'builder' owned by 'builder'
<86>Nov 29 04:58:45 userdel[1321287]: removed shadow group 'builder' owned by 'builder'
<86>Nov 29 04:58:45 groupadd[1321300]: group added to /etc/group: name=builder, GID=1305
<86>Nov 29 04:58:45 groupadd[1321300]: group added to /etc/gshadow: name=builder
<86>Nov 29 04:58:45 groupadd[1321300]: new group: name=builder, GID=1305
<86>Nov 29 04:58:45 useradd[1321312]: new user: name=builder, UID=1305, GID=1305, home=/usr/src, shell=/bin/bash, from=none
<13>Nov 29 04:58:52 rpmi: xorg-proto-devel-2024.1-alt1 sisyphus+343583.40.1.1 1711440649 installed
<13>Nov 29 04:58:52 rpmi: libexpat-2.5.0-alt1 sisyphus+346180.200.2.1 1716349835 installed
<13>Nov 29 04:58:52 rpmi: libogg-1.3.5-alt1 sisyphus+278100.3400.1.1 1626058929 installed
<13>Nov 29 04:58:52 rpmi: libwayland-client-1.23.1-alt1.1 sisyphus+356019.140.3.1 1724572111 installed
<13>Nov 29 04:58:52 rpmi: libglvnd-7:1.7.0-alt1 sisyphus+330949.100.1.1 1696424893 installed
<13>Nov 29 04:58:52 rpmi: libjpeg-2:3.0.2-alt2.1 sisyphus+340135.100.1.1 1707449145 installed
<13>Nov 29 04:58:52 rpmi: libpng16-1.6.42-alt2 sisyphus+339555.100.1.1 1706781682 installed
<13>Nov 29 04:58:52 rpmi: libvorbis-1.3.7-alt1 sisyphus+275738.100.1.1 1624751601 installed
<13>Nov 29 04:58:52 rpmi: libogg-devel-1.3.5-alt1 sisyphus+278100.3400.1.1 1626058929 installed
<13>Nov 29 04:58:52 rpmi: libfribidi-1.0.16-alt1 sisyphus+358393.100.1.1 1727333692 installed
<13>Nov 29 04:58:52 rpmi: libserd-0.32.2-alt1 sisyphus+341428.200.1.1 1708949158 installed
<13>Nov 29 04:58:53 rpmi: libopus-1.5.2-alt1 sisyphus+347834.100.1.1 1715455356 installed
<13>Nov 29 04:58:53 rpmi: perl-HTTP-Date-6.06-alt1 sisyphus+324527.100.1.1 1688834564 installed
<13>Nov 29 04:58:53 rpmi: perl-XML-NamespaceSupport-1.12-alt1 1491296348 installed
<13>Nov 29 04:58:53 rpmi: zlib-devel-1.3.1-alt1 sisyphus+342532.100.1.1 1710232285 installed
<13>Nov 29 04:58:53 rpmi: libidn2-2.3.7-alt1 sisyphus+339505.100.1.2 1706718968 installed
<13>Nov 29 04:58:53 rpmi: libnettle8-3.9.1-alt1 sisyphus+322548.100.1.2 1686176879 installed
<13>Nov 29 04:58:53 rpmi: libatk-2.54.0-alt1 sisyphus+357735.600.3.1 1726642126 installed
<13>Nov 29 04:58:53 rpmi: libflac12-1.4.3-alt2 sisyphus+343354.100.1.1 1711118098 installed
<13>Nov 29 04:58:53 rpmi: libzix-0.4.2-alt1 sisyphus+341428.100.1.1 1708949131 installed
<13>Nov 29 04:58:53 rpmi: libsord-0.16.16-alt1 sisyphus+341428.300.1.1 1708949185 installed
<13>Nov 29 04:58:53 rpmi: libraw1394-11-2.1.2-alt1 sisyphus+278262.100.1.1 1626081867 installed
<13>Nov 29 04:58:53 rpmi: liblcms2-2.16-alt1 sisyphus+335676.100.1.1 1701682597 installed
<13>Nov 29 04:58:53 rpmi: libusb-1.0.27-alt1 sisyphus+347412.100.1.1 1714739651 installed
<13>Nov 29 04:58:53 rpmi: libSDL2-2.30.9-alt3 sisyphus+363019.100.1.1 1732117646 installed
<13>Nov 29 04:58:53 rpmi: libmpg123-1:1.32.9-alt1 sisyphus+361601.100.1.1 1730561819 installed
<13>Nov 29 04:58:53 rpmi: liblame-3.100-alt1 sisyphus+346342.200.2.2 1716474674 installed
<13>Nov 29 04:58:53 rpmi: libgsm-1.0.17-alt1 sisyphus+275359.100.2.1 1624907612 installed
<13>Nov 29 04:58:53 rpmi: libsndfile-1.1.0-alt1 sisyphus+339776.7300.6.2 1707350065 installed
<13>Nov 29 04:58:53 rpmi: libwayland-server-1.23.1-alt1.1 sisyphus+356019.140.3.1 1724572111 installed
<13>Nov 29 04:58:53 rpmi: perl-LWP-MediaTypes-6.04-alt1 sisyphus+225468.100.1.1 1553186684 installed
<13>Nov 29 04:58:53 rpmi: perl-Compress-Raw-Zlib-2.206-alt1 sisyphus+335067.600.1.1 1700901499 installed
<13>Nov 29 04:58:53 rpmi: perl-libnet-1:3.15-alt1 sisyphus+317310.100.1.1 1679580208 installed
<13>Nov 29 04:58:53 rpmi: perl-XML-SAX-Base-1.09-alt1 1494364363 installed
<13>Nov 29 04:58:53 rpmi: libedit3-3.1.20230828-alt1 sisyphus+330914.200.3.1 1696922743 installed
<13>Nov 29 04:58:54 rpmi: libicu74-1:7.4.2-alt1 sisyphus+336372.200.1.1 1702423005 installed
<13>Nov 29 04:58:54 rpmi: libgraphite2-1.3.14-alt2.1 sisyphus+279571.100.1.2 1626605111 installed
<13>Nov 29 04:58:54 rpmi: xml-utils-1:2.12.9-alt1 sisyphus+355784.100.1.1 1724333686 installed
<13>Nov 29 04:58:54 rpmi: libp11-kit-1:0.25.5-alt1 sisyphus+352553.100.1.1 1720622573 installed
<13>Nov 29 04:58:54 rpmi: libtasn1-4.19.0-alt3 sisyphus+327816.100.1.1 1692802615 installed
<13>Nov 29 04:58:54 rpmi: libXau-1.0.11-alt1 sisyphus+311428.100.1.1 1670577439 installed
<13>Nov 29 04:58:54 rpmi: liblz4-1:1.9.4-alt1 sisyphus+309416.100.1.1 1667412981 installed
<13>Nov 29 04:58:54 rpmi: libsystemd-1:255.13-alt1 sisyphus+359453.100.2.1 1728651180 installed
<13>Nov 29 04:58:54 rpmi: libdbus-1.14.10-alt1 sisyphus+327286.5700.14.1 1711487401 installed
<13>Nov 29 04:58:54 rpmi: libavahi-0.8-alt4 sisyphus+344258.100.1.1 1712133856 installed
<13>Nov 29 04:58:54 rpmi: dbus-tools-1.14.10-alt1 sisyphus+327286.5700.14.1 1711487401 installed
<86>Nov 29 04:58:54 groupadd[1333255]: group added to /etc/group: name=messagebus, GID=999
<86>Nov 29 04:58:54 groupadd[1333255]: group added to /etc/gshadow: name=messagebus
<86>Nov 29 04:58:54 groupadd[1333255]: new group: name=messagebus, GID=999
<86>Nov 29 04:58:54 useradd[1333277]: new user: name=messagebus, UID=999, GID=999, home=/run/dbus, shell=/dev/null, from=none
<13>Nov 29 04:58:54 rpmi: dbus-1.14.10-alt1 sisyphus+327286.5700.14.1 1711487401 installed
<13>Nov 29 04:58:54 rpmi: libXau-devel-1.0.11-alt1 sisyphus+311428.100.1.1 1670577439 installed
<13>Nov 29 04:58:54 rpmi: rpm-build-gir-0.7.3-alt3.1 sisyphus+319393.100.1.1 1682538783 installed
<13>Nov 29 04:58:54 rpmi: libgraphite2-devel-1.3.14-alt2.1 sisyphus+279571.100.1.2 1626605111 installed
<13>Nov 29 04:58:54 rpmi: icu-utils-1:7.4.2-alt1 sisyphus+336372.200.1.1 1702423005 installed
<13>Nov 29 04:58:54 rpmi: libicu-devel-1:7.4.2-alt1 sisyphus+336372.200.1.1 1702423005 installed
<13>Nov 29 04:58:54 rpmi: libinstpatch-1.1.6-alt1.1 sisyphus+279572.100.1.2 1626605094 installed
<13>Nov 29 04:58:54 rpmi: libgsm-devel-1.0.17-alt1 sisyphus+275359.100.2.1 1624907612 installed
<13>Nov 29 04:58:54 rpmi: liblame-devel-3.100-alt1 sisyphus+346342.200.2.2 1716474674 installed
<13>Nov 29 04:58:54 rpmi: libmpg123-devel-1:1.32.9-alt1 sisyphus+361601.100.1.1 1730561819 installed
<13>Nov 29 04:58:54 rpmi: libiec61883-1.2.0-alt1.qa1 sisyphus+275365.100.1.2 1624491850 installed
<13>Nov 29 04:58:54 rpmi: libsratom-0.6.16-alt1 sisyphus+341428.400.1.1 1708949212 installed
<13>Nov 29 04:58:54 rpmi: liblilv-0.24.24-alt2 sisyphus+341494.100.1.1 1709024102 installed
<13>Nov 29 04:58:54 rpmi: libflac-devel-1.4.3-alt2 sisyphus+343354.100.1.1 1711118098 installed
<13>Nov 29 04:58:54 rpmi: libhogweed6-3.9.1-alt1 sisyphus+322548.100.1.2 1686176879 installed
<13>Nov 29 04:58:54 rpmi: libgnutls30-3.8.4-alt1 sisyphus+343729.100.2.1 1711571288 installed
<13>Nov 29 04:58:54 rpmi: libngtcp2.16-1.7.0-alt1 sisyphus+356415.200.1.1 1725031912 installed
<13>Nov 29 04:58:54 rpmi: libngtcp2_crypto_gnutls8-1.7.0-alt1 sisyphus+356415.200.1.1 1725031912 installed
<13>Nov 29 04:58:54 rpmi: libpng-devel-1.6.42-alt2 sisyphus+339555.100.1.1 1706781682 installed
<13>Nov 29 04:58:54 rpmi: perl-File-Listing-6.16-alt1 sisyphus+325783.100.1.1 1690559356 installed
<13>Nov 29 04:58:54 rpmi: libopus-devel-1.5.2-alt1 sisyphus+347834.100.1.1 1715455356 installed
<13>Nov 29 04:58:54 rpmi: libvorbis-devel-1.3.7-alt1 sisyphus+275738.100.1.1 1624751601 installed
<13>Nov 29 04:58:54 rpmi: libsndfile-devel-1.1.0-alt1 sisyphus+339776.7300.6.2 1707350065 installed
<13>Nov 29 04:58:54 rpmi: libturbojpeg-2:3.0.2-alt2.1 sisyphus+340135.100.1.1 1707449145 installed
<13>Nov 29 04:58:54 rpmi: libGLES-7:1.7.0-alt1 sisyphus+330949.100.1.1 1696424893 installed
<13>Nov 29 04:58:54 rpmi: libOpenGL-7:1.7.0-alt1 sisyphus+330949.100.1.1 1696424893 installed
<13>Nov 29 04:58:54 rpmi: libwayland-cursor-1.23.1-alt1.1 sisyphus+356019.140.3.1 1724572111 installed
<13>Nov 29 04:58:54 rpmi: libwayland-egl-4:18.1.0-alt1.1 sisyphus+356019.140.3.1 1724572111 installed
<13>Nov 29 04:58:54 rpmi: libtheora-2:1.1.1-alt6 sisyphus+277967.100.1.1 1625928129 installed
<13>Nov 29 04:58:54 rpmi: wayland-devel-1.23.1-alt1.1 sisyphus+356019.140.3.1 1724572111 installed
<13>Nov 29 04:58:54 rpmi: libwayland-client-devel-1.23.1-alt1.1 sisyphus+356019.140.3.1 1724572111 installed
<13>Nov 29 04:58:54 rpmi: libspeechd-0.11.5-alt2 sisyphus+350492.300.2.1 1717751826 installed
<13>Nov 29 04:58:54 rpmi: libmpeg2-0.5.1-alt4.svn20120718 sisyphus+285823.100.1.1 1632416716 installed
<13>Nov 29 04:58:54 rpmi: libmad-0.15.1b-alt9 sisyphus+278239.100.1.1 1626080123 installed
<13>Nov 29 04:58:54 rpmi: libxkbcommon-1.7.0-alt1.1 sisyphus+343672.100.1.1 1711490810 installed
<13>Nov 29 04:58:54 rpmi: libsqlite3-3.46.0-alt1 sisyphus+352354.100.2.1 1721980422 installed
<13>Nov 29 04:58:54 rpmi: libgudev-1:238-alt1 sisyphus+324364.100.1.1 1688646144 installed
<13>Nov 29 04:58:54 rpmi: libgif-4.1.6-alt3 sisyphus+276911.100.1.3 1625273979 installed
<13>Nov 29 04:58:54 rpmi: libwebrtc-audio-processing-1.3-alt2 sisyphus+332026.100.1.1 1697579361 installed
<13>Nov 29 04:58:54 rpmi: libsbc1-2.0-alt2 sisyphus+322708.100.1.1 1686327806 installed
<13>Nov 29 04:58:54 rpmi: libmysofa-1.3.3-alt1 sisyphus+360234.100.1.1 1729426691 installed
<13>Nov 29 04:58:54 rpmi: libldac2-2.0.2.3-alt0.1 sisyphus+278007.100.1.2 1625973044 installed
<13>Nov 29 04:58:54 rpmi: liblc3-1.1.1-alt1 sisyphus+347780.100.1.1 1715374023 installed
<13>Nov 29 04:58:54 rpmi: libfreeaptx-0.1.1-alt1 sisyphus+282022.100.1.1 1628182661 installed
<13>Nov 29 04:58:54 rpmi: libgomp1-14.2.1-alt1 sisyphus+360995.100.1.1 1730131018 installed
<13>Nov 29 04:58:54 rpmi: libsigc++2-2.12.1-alt1 sisyphus+331046.200.2.1 1696511642 installed
<13>Nov 29 04:58:54 rpmi: libfdk-aac2-2.0.3-alt0.1 sisyphus+338863.100.1.1 1706094241 installed
<13>Nov 29 04:58:55 rpmi: libfaad2-2.11.1-alt1 sisyphus+338260.100.2.2 1705755212 installed
<13>Nov 29 04:58:55 rpmi: libepoxy-1.5.10-alt1 sisyphus+296853.200.2.1 1647631866 installed
<13>Nov 29 04:58:55 rpmi: libdatrie-0.2.13-alt1_7 sisyphus+328221.100.1.1 1693336966 installed
<13>Nov 29 04:58:55 rpmi: libthai-0.1.29-alt1_6 sisyphus+328230.100.1.2 1693348044 installed
<13>Nov 29 04:58:55 rpmi: libconfig-c++11-1.7.3-alt1 sisyphus+356893.2177.17.1 1725864292 installed
<13>Nov 29 04:58:55 rpmi: libtdb-1.4.10-alt1 sisyphus+342425.100.8.1 1714748986 installed
<13>Nov 29 04:58:55 rpmi: libltdl7-2.4.7-alt5 sisyphus+341963.200.3.1 1711659208 installed
<13>Nov 29 04:58:55 rpmi: sound-theme-freedesktop-0.8-alt1 sisyphus+277010.100.1.2 1625346634 installed
<13>Nov 29 04:58:55 rpmi: libyaml2-0.2.5-alt1 sisyphus+278391.100.1.1 1626094928 installed
<13>Nov 29 04:58:55 rpmi: libgtest-1.13.0-alt2 sisyphus+346258.200.2.1 1716419382 installed
<13>Nov 29 04:58:55 rpmi: libbluez-5.79-alt1 sisyphus+362585.400.4.1 1731678491 installed
<13>Nov 29 04:58:55 rpmi: liba52-0.8.0-alt1 sisyphus+349892.100.1.1 1716987412 installed
<13>Nov 29 04:58:55 rpmi: libasyncns-0.8-alt2.qa1 sisyphus+275091.100.1.1 1624402241 installed
<13>Nov 29 04:58:55 rpmi: libxshmfence-1.3.2-alt1 sisyphus+311428.400.1.1 1670577525 installed
<13>Nov 29 04:58:55 rpmi: libsensors3-3.6.0-alt3 sisyphus+308579.100.1.1 1666035267 installed
<13>Nov 29 04:58:55 rpmi: llvm18.1-filesystem-18.1.8-alt0.3 sisyphus+362390.100.1.1 1731449765 installed
<13>Nov 29 04:58:55 rpmi: llvm18.1-polly-18.1.8-alt0.3 sisyphus+362390.100.1.1 1731449765 installed
<13>Nov 29 04:58:55 rpmi: llvm18.1-gold-18.1.8-alt0.3 sisyphus+362390.100.1.1 1731449765 installed
<13>Nov 29 04:58:57 rpmi: llvm18.1-libs-18.1.8-alt0.3 sisyphus+362390.100.1.1 1731449765 installed
<13>Nov 29 04:58:57 rpmi: libpciaccess-1:0.18.1-alt1 sisyphus+343583.300.1.1 1711440789 installed
<13>Nov 29 04:58:57 rpmi: libdrm-1:2.4.123-alt1 sisyphus+357330.40.3.1 1726125397 installed
<13>Nov 29 04:58:57 rpmi: perl-Try-Tiny-0.31-alt1 sisyphus+290597.100.1.1 1637915507 installed
<13>Nov 29 04:58:57 rpmi: perl-IO-Socket-IP-0.42-alt1 sisyphus+325815.100.1.2 1690571193 installed
<13>Nov 29 04:58:57 rpmi: perl-Module-Load-0.36-alt1 sisyphus+258992.100.1.1 1601543407 installed
<13>Nov 29 04:58:57 rpmi: perl-Compress-Raw-Bzip2-2.210-alt1 sisyphus+343108.100.1.3 1710881036 installed
<13>Nov 29 04:58:57 rpmi: perl-IO-Compress-Brotli-2:0.004001-alt3 sisyphus+335067.1200.1.1 1700901589 installed
<13>Nov 29 04:58:57 rpmi: perl-Clone-0.46-alt1 sisyphus+335067.1100.1.1 1700901562 installed
<13>Nov 29 04:58:57 rpmi: perl-HTML-Tagset-3.24-alt1 sisyphus+343117.100.1.3 1710883587 installed
<13>Nov 29 04:58:57 rpmi: perl-Term-ANSIColor-5.01-alt1 sisyphus+244783.100.1.2 1579747505 installed
<13>Nov 29 04:58:57 rpmi: perl-Data-Dump-1.25-alt1 sisyphus+276551.100.1.1 1625126880 installed
<13>Nov 29 04:58:57 rpmi: perl-Filter-1.64-alt1 sisyphus+335067.400.1.1 1700901412 installed
<13>Nov 29 04:58:57 rpmi: perl-Encode-3.21-alt1 sisyphus+343095.100.1.1 1710875477 installed
<13>Nov 29 04:58:57 rpmi: perl-URI-5.27-alt1 sisyphus+340901.100.1.1 1708180683 installed
<13>Nov 29 04:58:57 rpmi: perl-IO-Compress-2.206-alt1 sisyphus+325819.100.1.1 1690563199 installed
<13>Nov 29 04:58:57 rpmi: perl-Net-HTTP-6.23-alt1 sisyphus+323470.100.1.1 1687422469 installed
<13>Nov 29 04:58:57 rpmi: perl-HTML-Parser-3.82-alt1 sisyphus+343116.100.1.3 1710883258 installed
<13>Nov 29 04:58:57 rpmi: perl-WWW-RobotRules-6.02-alt1 1329756211 installed
<13>Nov 29 04:58:57 rpmi: perl-Encode-Locale-1.05-alt1 1444608613 installed
<13>Nov 29 04:58:57 rpmi: perl-IO-HTML-1.004-alt1 sisyphus+258983.100.1.1 1601542619 installed
<13>Nov 29 04:58:57 rpmi: perl-HTTP-Message-6.45-alt1 sisyphus+330728.100.1.1 1696162276 installed
<13>Nov 29 04:58:57 rpmi: perl-HTTP-Negotiate-6.01-alt1 1329760563 installed
<13>Nov 29 04:58:57 rpmi: perl-libwww-6.77-alt1 sisyphus+343120.100.1.2 1710884405 installed
<13>Nov 29 04:58:57 rpmi: perl-XML-LibXML-2.0210-alt8 sisyphus+355798.100.1.1 1724340088 installed
<13>Nov 29 04:58:57 rpmi: perl-XML-SAX-1.02-alt1 sisyphus+232322.100.1.1 1560758406 installed
<13>Nov 29 04:58:57 rpmi: perl-XML-Simple-2.25-alt2 sisyphus+257498.100.1.1 1599324034 installed
<13>Nov 29 04:58:57 rpmi: icon-naming-utils-0.8.90-alt1 sisyphus+276851.100.1.1 1625243947 installed
<13>Nov 29 04:58:57 rpmi: icon-theme-adwaita-47.0-alt1 sisyphus+357735.1000.3.1 1726642413 installed
<13>Nov 29 04:58:57 rpmi: usbids-20240206-alt1 sisyphus+339943.100.1.1 1707270512 installed
<13>Nov 29 04:58:57 rpmi: pciids-20241031-alt1 sisyphus+361327.100.1.1 1730460822 installed
<13>Nov 29 04:58:57 rpmi: hwdata-0.384-alt1 sisyphus+354460.100.1.1 1722898493 installed
<13>Nov 29 04:58:57 rpmi: libwebp7-1.4.0-alt1 sisyphus+345159.200.1.1 1713168663 installed
<13>Nov 29 04:58:57 rpmi: libdeflate-1.22-alt1 sisyphus+359192.100.1.1 1728330316 installed
<13>Nov 29 04:58:57 rpmi: libtiff5-4.4.0-alt4 sisyphus+322581.100.1.2 1686180089 installed
<13>Nov 29 04:58:57 rpmi: libgdk-pixbuf-locales-2.42.12-alt1 sisyphus+348142.100.1.1 1715791856 installed
<13>Nov 29 04:58:57 rpmi: gtk+3-themes-incompatible-3.20-alt3 1461944560 installed
<13>Nov 29 04:58:57 rpmi: libxxhash-0.8.2-alt1 sisyphus+336514.200.7.1 1702672118 installed
<13>Nov 29 04:58:57 rpmi: less-633-alt1 sisyphus+328181.300.2.1 1693321749 installed
<13>Nov 29 04:58:57 rpmi: gcc-c++-common-1.4.28-alt1 sisyphus+348678.100.1.1 1716396142 installed
<13>Nov 29 04:58:58 rpmi: libstdc++14-devel-14.2.1-alt1 sisyphus+360995.100.1.1 1730131018 installed
<13>Nov 29 04:58:59 rpmi: gcc14-c++-14.2.1-alt1 sisyphus+360995.100.1.1 1730131018 installed
<13>Nov 29 04:58:59 rpmi: libpixman-3:0.44.0-alt1 sisyphus+362489.100.1.1 1731568895 installed
<13>Nov 29 04:58:59 rpmi: libmpdec3-2.5.1-alt3 sisyphus+314490.500.5.1 1675432004 installed
<13>Nov 29 04:58:59 rpmi: libgdbm-1.8.3-alt10 sisyphus+346222.200.3.2 1716468404 installed
<13>Nov 29 04:58:59 rpmi: libb2-0.98.1-alt1_1 sisyphus+291614.100.1.1 1638962877 installed
<13>Nov 29 04:58:59 rpmi: libdevmapper-1.02.202-alt1 sisyphus+361775.200.5.1 1730990757 installed
<13>Nov 29 04:58:59 rpmi: mount-2.39.2-alt1 sisyphus+327286.4500.14.1 1711486324 installed
<13>Nov 29 04:58:59 rpmi: losetup-2.39.2-alt1 sisyphus+327286.4500.14.1 1711486324 installed
<13>Nov 29 04:58:59 rpmi: lsblk-2.39.2-alt1 sisyphus+327286.4500.14.1 1711486324 installed
<13>Nov 29 04:58:59 rpmi: diffstat-1.64-alt1 sisyphus+346132.200.3.2 1716466240 installed
<13>Nov 29 04:58:59 rpmi: dconf-profile-0.1-alt1 sisyphus+325633.340.3.1 1690415358 installed
<13>Nov 29 04:58:59 rpmi: publicsuffix-list-dafsa-20240911-alt1 sisyphus+357399.100.1.1 1726160479 installed
<13>Nov 29 04:58:59 rpmi: libpsl-0.21.5-alt1 sisyphus+338474.100.1.1 1705684769 installed
<13>Nov 29 04:58:59 rpmi: libnghttp3.9-1.5.0-alt1 sisyphus+356415.100.1.1 1725031855 installed
<13>Nov 29 04:58:59 rpmi: libnghttp2-1.63.0-alt1 sisyphus+356414.100.1.1 1725031508 installed
<13>Nov 29 04:58:59 rpmi: openldap-common-2.6.8-alt1 sisyphus+351621.100.1.1 1719420449 installed
<13>Nov 29 04:58:59 rpmi: libntlm-1.5-alt1 sisyphus+278100.3300.1.1 1626058899 installed
<13>Nov 29 04:58:59 rpmi: libidn-1.37-alt2 sisyphus+300849.100.1.1 1653769687 installed
<13>Nov 29 04:58:59 rpmi: libverto-0.3.2-alt1_1 sisyphus+321176.2200.10.2 1684803947 installed
<13>Nov 29 04:58:59 rpmi: liblmdb-0.9.33-alt1 sisyphus+360625.100.1.1 1729819640 installed
<13>Nov 29 04:58:59 rpmi: libkeyutils-1.6.3-alt1 sisyphus+346336.200.2.2 1716472658 installed
<13>Nov 29 04:58:59 rpmi: libcom_err-1.47.1.0.10.ad56-alt2 sisyphus+363497.200.3.1 1732729908 installed
<13>Nov 29 04:58:59 rpmi: libbrotlicommon-1.1.0-alt1 sisyphus+328501.100.1.1 1693598419 installed
<13>Nov 29 04:58:59 rpmi: libbrotlidec-1.1.0-alt1 sisyphus+328501.100.1.1 1693598419 installed
<13>Nov 29 04:58:59 rpmi: libharfbuzz-10.1.0-alt1 sisyphus+361773.100.1.1 1730824042 installed
<13>Nov 29 04:58:59 rpmi: libfreetype-2.13.3-alt1 sisyphus+355656.100.1.1 1724221064 installed
<13>Nov 29 04:58:59 rpmi: libfontconfig1-2.15.0-alt1 sisyphus+355771.100.2.3 1724337298 installed
<13>Nov 29 04:58:59 rpmi: fontconfig-2.15.0-alt1 sisyphus+355771.100.2.3 1724337298 installed
Updating fonts cache: <29>Nov 29 04:59:00 fontconfig: Updating fonts cache: succeeded
[ DONE ]
<13>Nov 29 04:59:00 rpmi: libharfbuzz-icu-10.1.0-alt1 sisyphus+361773.100.1.1 1730824042 installed
<13>Nov 29 04:59:00 rpmi: libharfbuzz-gobject-10.1.0-alt1 sisyphus+361773.100.1.1 1730824042 installed
<13>Nov 29 04:59:00 rpmi: bc-1:1.07.1-alt1 sisyphus+346065.200.3.1 1716459102 installed
<13>Nov 29 04:59:00 rpmi: desktop-file-utils-0.26-alt6 sisyphus+331944.100.1.3 1697550026 installed
<13>Nov 29 04:59:00 rpmi: shared-mime-info-2.4-alt1 sisyphus+334259.100.1.1 1699787316 installed
<13>Nov 29 04:59:00 rpmi: gsettings-desktop-schemas-data-47.1-alt1 sisyphus+357735.300.3.1 1726641752 installed
<13>Nov 29 04:59:00 rpmi: libgio-2.82.2-alt1 sisyphus+360023.100.1.1 1729169691 installed
<13>Nov 29 04:59:00 rpmi: gsettings-desktop-schemas-47.1-alt1 sisyphus+357735.300.3.1 1726641752 installed
<13>Nov 29 04:59:00 rpmi: libgdk-pixbuf-2.42.12-alt1 sisyphus+348142.100.1.1 1715791856 installed
<13>Nov 29 04:59:01 rpmi: libglibmm-2.66.7-alt1 sisyphus+344717.100.1.1 1712649439 installed
<13>Nov 29 04:59:01 rpmi: libxml++2-2.42.3-alt1 sisyphus+338062.100.1.2 1705656007 installed
<13>Nov 29 04:59:01 rpmi: libffado-2.4.9-alt1 sisyphus+359940.100.1.1 1729093015 installed
<13>Nov 29 04:59:01 rpmi: gtk4-update-icon-cache-4.16.7-alt1 sisyphus+363301.100.1.1 1732451644 installed
<13>Nov 29 04:59:01 rpmi: libdconf-0.40.0-alt3 sisyphus+325650.100.1.1 1690417205 installed
<13>Nov 29 04:59:01 rpmi: dconf-0.40.0-alt3 sisyphus+325650.100.1.1 1690417205 installed
<13>Nov 29 04:59:01 rpmi: libgtk+3-schemas-3.24.43-alt1 sisyphus+352627.100.1.1 1720700731 installed
<13>Nov 29 04:59:01 rpmi: libgstreamer1.0-1.24.9-alt1 sisyphus+361260.100.1.1 1730379899 installed
<13>Nov 29 04:59:01 rpmi: libjson-glib-1.10.0-alt1 sisyphus+357735.1200.3.1 1726642581 installed
<13>Nov 29 04:59:01 rpmi: libgusb-0.4.9-alt1 sisyphus+345693.100.1.1 1713857461 installed
<13>Nov 29 04:59:01 rpmi: libcolord-1.4.7-alt1.1 sisyphus+338793.100.1.1 1706039016 installed
<13>Nov 29 04:59:01 rpmi: libpolkit-124-alt3 sisyphus+351454.100.1.1 1719236630 installed
<13>Nov 29 04:59:01 rpmi: systemd-modules-common-1:255.13-alt1 sisyphus+359453.100.2.1 1728651180 installed
<13>Nov 29 04:59:01 rpmi: systemd-sysctl-common-1:255.13-alt1 sisyphus+359453.100.2.1 1728651180 installed
<13>Nov 29 04:59:01 rpmi: systemd-tmpfiles-common-1:255.13-alt1 sisyphus+359453.100.2.1 1728651180 installed
<13>Nov 29 04:59:01 rpmi: systemd-utils-filetriggers-1:255.13-alt1 sisyphus+359453.100.2.1 1728651180 installed
<13>Nov 29 04:59:01 rpmi: libfdisk-2.39.2-alt1 sisyphus+327286.4500.14.1 1711486324 installed
<13>Nov 29 04:59:01 rpmi: libX11-locales-3:1.8.10-alt1 sisyphus+353866.100.1.1 1722240771 installed
<13>Nov 29 04:59:01 rpmi: libXdmcp-1.1.5-alt1 sisyphus+343583.700.1.1 1711441061 installed
<13>Nov 29 04:59:01 rpmi: libxcb-1.17.0-alt1 sisyphus+345308.200.1.1 1713342004 installed
<13>Nov 29 04:59:01 rpmi: libX11-3:1.8.10-alt1 sisyphus+353866.100.1.1 1722240771 installed
<13>Nov 29 04:59:01 rpmi: libXext-1.3.6-alt1 sisyphus+343583.1000.1.1 1711441101 installed
<13>Nov 29 04:59:01 rpmi: libXrender-0.9.11-alt1 sisyphus+308841.100.1.1 1666436130 installed
<13>Nov 29 04:59:01 rpmi: libpulseaudio-17.0-alt2 sisyphus+339257.100.1.1 1706519226 installed
<13>Nov 29 04:59:01 rpmi: libcairo-1:1.18.2-alt1 sisyphus+357195.100.1.1 1725948391 installed
<13>Nov 29 04:59:01 rpmi: libXfixes-6.0.1-alt1 sisyphus+331490.300.1.1 1697023233 installed
<13>Nov 29 04:59:01 rpmi: libcairo-gobject-1:1.18.2-alt1 sisyphus+357195.100.1.1 1725948391 installed
<13>Nov 29 04:59:01 rpmi: libXrandr-1.5.4-alt1 sisyphus+330992.100.1.1 1696485400 installed
<13>Nov 29 04:59:01 rpmi: libXft-2.3.8-alt1 sisyphus+331490.400.1.1 1697023269 installed
<13>Nov 29 04:59:01 rpmi: libpango-1.54.0-alt1 sisyphus+350796.200.1.1 1718041393 installed
<13>Nov 29 04:59:01 rpmi: libXi-1.8-alt1 sisyphus+285490.200.1.1 1632124174 installed
<13>Nov 29 04:59:01 rpmi: libat-spi2-core-2.54.0-alt1 sisyphus+357735.600.3.1 1726642126 installed
<13>Nov 29 04:59:03 rpmi: libxcb-devel-1.17.0-alt1 sisyphus+345308.200.1.1 1713342004 installed
<13>Nov 29 04:59:03 rpmi: libX11-devel-3:1.8.10-alt1 sisyphus+353866.100.1.1 1722240771 installed
<13>Nov 29 04:59:03 rpmi: libXrender-devel-0.9.11-alt1 sisyphus+308841.100.1.1 1666436130 installed
<13>Nov 29 04:59:03 rpmi: libXext-devel-1.3.6-alt1 sisyphus+343583.1000.1.1 1711441101 installed
<13>Nov 29 04:59:03 rpmi: at-spi2-atk-2.54.0-alt1 sisyphus+357735.600.3.1 1726642126 installed
<13>Nov 29 04:59:03 rpmi: libXcursor-1.2.2-alt1 sisyphus+343583.600.1.1 1711441025 installed
<13>Nov 29 04:59:03 rpmi: libharfbuzz-cairo-10.1.0-alt1 sisyphus+361773.100.1.1 1730824042 installed
<13>Nov 29 04:59:03 rpmi: libmikmod-3.3.11.1-alt2 sisyphus+278211.100.1.1 1626077581 installed
<13>Nov 29 04:59:03 rpmi: libXtst-1.2.4-alt1 sisyphus+308663.1300.1.1 1666168495 installed
<13>Nov 29 04:59:03 rpmi: libXxf86vm-1.1.5-alt1 sisyphus+308663.1400.1.1 1666168523 installed
<13>Nov 29 04:59:03 rpmi: libGLX-mesa-4:24.2.8-alt1 sisyphus+363567.100.1.1 1732794856 installed
<13>Nov 29 04:59:03 rpmi: libgbm-4:24.2.8-alt1 sisyphus+363567.100.1.1 1732794856 installed
<13>Nov 29 04:59:03 rpmi: libEGL-mesa-4:24.2.8-alt1 sisyphus+363567.100.1.1 1732794856 installed
<13>Nov 29 04:59:03 rpmi: libEGL-7:1.7.0-alt1 sisyphus+330949.100.1.1 1696424893 installed
<13>Nov 29 04:59:03 rpmi: libGLX-7:1.7.0-alt1 sisyphus+330949.100.1.1 1696424893 installed
<13>Nov 29 04:59:03 rpmi: libGL-7:1.7.0-alt1 sisyphus+330949.100.1.1 1696424893 installed
<13>Nov 29 04:59:03 rpmi: libglvnd-devel-7:1.7.0-alt1 sisyphus+330949.100.1.1 1696424893 installed
<13>Nov 29 04:59:03 rpmi: libGLU-4:9.0.1-alt1 sisyphus+278350.100.1.2 1626174382 installed
<13>Nov 29 04:59:03 rpmi: libGLU-devel-4:9.0.1-alt1 sisyphus+278350.100.1.2 1626174382 installed
<13>Nov 29 04:59:03 rpmi: libXinerama-1.1.5-alt1 sisyphus+309287.100.1.1 1667213208 installed
<13>Nov 29 04:59:03 rpmi: dbus-tools-gui-1.14.10-alt1 sisyphus+327286.5700.14.1 1711487401 installed
<13>Nov 29 04:59:03 rpmi: xprop-1.2.5-alt1 sisyphus+279025.100.1.1 1626354198 installed
<13>Nov 29 04:59:03 rpmi: libXcomposite-0.4.6-alt1 sisyphus+311188.200.1.1 1670233682 installed
<13>Nov 29 04:59:03 rpmi: libXdamage-1.1.6-alt1 sisyphus+311188.300.1.1 1670233711 installed
<13>Nov 29 04:59:03 rpmi: rpm-macros-alternatives-0.5.2-alt2 sisyphus+315270.200.2.1 1676457367 installed
<13>Nov 29 04:59:03 rpmi: alternatives-0.5.2-alt2 sisyphus+315270.200.2.1 1676457367 installed
<13>Nov 29 04:59:04 rpmi: ca-certificates-2024.07.01-alt1 sisyphus+351897.100.1.1 1719826350 installed
<13>Nov 29 04:59:04 rpmi: ca-trust-0.2.0-alt1 sisyphus+344843.100.1.1 1712743326 installed
<13>Nov 29 04:59:04 rpmi: p11-kit-trust-1:0.25.5-alt1 sisyphus+352553.100.1.1 1720622573 installed
<13>Nov 29 04:59:04 rpmi: libcrypto3-3.1.7-alt2 sisyphus+359910.100.1.1 1729080439 installed
<13>Nov 29 04:59:04 rpmi: libssl3-3.1.7-alt2 sisyphus+359910.100.1.1 1729080439 installed
<86>Nov 29 04:59:04 groupadd[1343982]: group added to /etc/group: name=_keytab, GID=998
<86>Nov 29 04:59:04 groupadd[1343982]: group added to /etc/gshadow: name=_keytab
<86>Nov 29 04:59:04 groupadd[1343982]: new group: name=_keytab, GID=998
<13>Nov 29 04:59:04 rpmi: libkrb5-1.21.3-alt2 sisyphus+351857.100.1.1 1719735141 installed
<13>Nov 29 04:59:04 rpmi: python3-3.12.7-alt1 sisyphus+358796.100.1.1 1727844808 installed
<13>Nov 29 04:59:05 rpmi: python3-base-3.12.7-alt1 sisyphus+358796.100.1.1 1727844808 installed
<13>Nov 29 04:59:05 rpmi: glib2-devel-2.82.2-alt1 sisyphus+360023.100.1.1 1729169691 installed
<13>Nov 29 04:59:05 rpmi: libkmod-32-alt1 sisyphus+357452.100.2.1 1727718007 installed
<13>Nov 29 04:59:05 rpmi: libcairo-devel-1:1.18.2-alt1 sisyphus+357195.100.1.1 1725948391 installed
<13>Nov 29 04:59:05 rpmi: fontconfig-devel-2.15.0-alt1 sisyphus+355771.100.2.3 1724337298 installed
<13>Nov 29 04:59:05 rpmi: libfreetype-devel-2.13.3-alt1 sisyphus+355656.100.1.1 1724221064 installed
<13>Nov 29 04:59:05 rpmi: libharfbuzz-devel-10.1.0-alt1 sisyphus+361773.100.1.1 1730824042 installed
<13>Nov 29 04:59:05 rpmi: libgio-devel-2.82.2-alt1 sisyphus+360023.100.1.1 1729169691 installed
<13>Nov 29 04:59:05 rpmi: libgdk-pixbuf-devel-2.42.12-alt1 sisyphus+348142.100.1.1 1715791856 installed
<13>Nov 29 04:59:05 rpmi: libXft-devel-2.3.8-alt1 sisyphus+331490.400.1.1 1697023269 installed
<13>Nov 29 04:59:05 rpmi: libpango-devel-1.54.0-alt1 sisyphus+350796.200.1.1 1718041393 installed
<13>Nov 29 04:59:05 rpmi: libcairo-gobject-devel-1:1.18.2-alt1 sisyphus+357195.100.1.1 1725948391 installed
<13>Nov 29 04:59:05 rpmi: systemd-utils-standalone-1:255.13-alt1 sisyphus+359453.100.2.1 1728651180 installed
<13>Nov 29 04:59:05 rpmi: at-spi2-core-2.54.0-alt1 sisyphus+357735.600.3.1 1726642126 installed
<13>Nov 29 04:59:05 rpmi: kmod-32-alt1 sisyphus+357452.100.2.1 1727718007 installed
<13>Nov 29 04:59:05 rpmi: dmsetup-1.02.202-alt1 sisyphus+361775.200.5.1 1730990757 installed
<86>Nov 29 04:59:05 groupadd[1345941]: group added to /etc/group: name=tape, GID=997
<86>Nov 29 04:59:05 groupadd[1345941]: group added to /etc/gshadow: name=tape
<86>Nov 29 04:59:05 groupadd[1345941]: new group: name=tape, GID=997
<86>Nov 29 04:59:05 groupadd[1345962]: group added to /etc/group: name=dialout, GID=996
<86>Nov 29 04:59:05 groupadd[1345962]: group added to /etc/gshadow: name=dialout
<86>Nov 29 04:59:05 groupadd[1345962]: new group: name=dialout, GID=996
<86>Nov 29 04:59:05 groupadd[1345996]: group added to /etc/group: name=input, GID=995
<86>Nov 29 04:59:05 groupadd[1345996]: group added to /etc/gshadow: name=input
<86>Nov 29 04:59:05 groupadd[1345996]: new group: name=input, GID=995
<86>Nov 29 04:59:05 groupadd[1346021]: group added to /etc/group: name=video, GID=994
<86>Nov 29 04:59:05 groupadd[1346021]: group added to /etc/gshadow: name=video
<86>Nov 29 04:59:05 groupadd[1346021]: new group: name=video, GID=994
<86>Nov 29 04:59:05 groupadd[1346037]: group added to /etc/group: name=render, GID=993
<86>Nov 29 04:59:05 groupadd[1346037]: group added to /etc/gshadow: name=render
<86>Nov 29 04:59:05 groupadd[1346037]: new group: name=render, GID=993
<86>Nov 29 04:59:06 groupadd[1346049]: group added to /etc/group: name=sgx, GID=992
<86>Nov 29 04:59:06 groupadd[1346049]: group added to /etc/gshadow: name=sgx
<86>Nov 29 04:59:06 groupadd[1346049]: new group: name=sgx, GID=992
<13>Nov 29 04:59:06 rpmi: udev-1:255.13-alt1 sisyphus+359453.100.2.1 1728651180 installed
<86>Nov 29 04:59:06 groupadd[1346511]: group added to /etc/group: name=colord, GID=991
<86>Nov 29 04:59:06 groupadd[1346511]: group added to /etc/gshadow: name=colord
<86>Nov 29 04:59:06 groupadd[1346511]: new group: name=colord, GID=991
<86>Nov 29 04:59:06 useradd[1346521]: new user: name=colord, UID=998, GID=991, home=/var/colord, shell=/dev/null, from=none
<13>Nov 29 04:59:06 rpmi: colord-1.4.7-alt1.1 sisyphus+338793.100.1.1 1706039016 installed
<13>Nov 29 04:59:06 rpmi: libatk-devel-2.54.0-alt1 sisyphus+357735.600.3.1 1726642126 installed
<13>Nov 29 04:59:06 rpmi: libpulseaudio-devel-17.0-alt2 sisyphus+339257.100.1.1 1706519226 installed
<13>Nov 29 04:59:06 rpmi: gtk-builder-convert-2.24.33-alt2 sisyphus+361465.100.1.1 1730475121 installed
<13>Nov 29 04:59:06 rpmi: libgsasl18-2.2.1-alt2 sisyphus+359713.200.2.1 1728905430 installed
<86>Nov 29 04:59:06 groupadd[1346606]: group added to /etc/group: name=sasl, GID=990
<86>Nov 29 04:59:06 groupadd[1346606]: group added to /etc/gshadow: name=sasl
<86>Nov 29 04:59:06 groupadd[1346606]: new group: name=sasl, GID=990
<13>Nov 29 04:59:06 rpmi: libsasl2-3-2.1.28-alt2 sisyphus+343335.100.1.1 1711112544 installed
<13>Nov 29 04:59:06 rpmi: libldap2-2.6.8-alt1 sisyphus+351621.100.1.1 1719420449 installed
<13>Nov 29 04:59:06 rpmi: libcups-2.4.11-alt1 sisyphus+359120.200.2.1 1728202635 installed
<13>Nov 29 04:59:07 rpmi: libgtk+3-3.24.43-alt1 sisyphus+352627.100.1.1 1720700731 installed
<13>Nov 29 04:59:07 rpmi: libevent2.1-2.1.12-alt1 sisyphus+324359.3500.11.1 1689364661 installed
<13>Nov 29 04:59:07 rpmi: libcamera-1:0.3.2-alt1 sisyphus+358497.100.1.1 1727451862 installed
<13>Nov 29 04:59:07 rpmi: libssh2-1.11.0-alt2 sisyphus+339356.100.1.1 1706593137 installed
<13>Nov 29 04:59:07 rpmi: libcurl-8.11.0-alt1 sisyphus+361800.100.1.1 1730880969 installed
<13>Nov 29 04:59:07 rpmi: openssh-common-9.6p1-alt2 sisyphus+351911.100.1.1 1719838544 installed
<86>Nov 29 04:59:07 groupadd[1348185]: group added to /etc/group: name=sshagent, GID=989
<86>Nov 29 04:59:07 groupadd[1348185]: group added to /etc/gshadow: name=sshagent
<86>Nov 29 04:59:07 groupadd[1348185]: new group: name=sshagent, GID=989
<13>Nov 29 04:59:07 rpmi: openssh-clients-9.6p1-alt2 sisyphus+351911.100.1.1 1719838544 installed
<13>Nov 29 04:59:07 rpmi: rsync-3.2.7-alt1 sisyphus+325006.2000.1.1 1689497333 installed
<13>Nov 29 04:59:07 rpmi: alsa-ucm-conf-1.2.12-alt1 sisyphus+352670.100.1.1 1720712327 installed
<13>Nov 29 04:59:07 rpmi: alsa-topology-conf-1.2.5.1-alt1 sisyphus+274777.100.1.1 1624089141 installed
<13>Nov 29 04:59:07 rpmi: libalsa-1:1.2.12-alt1 sisyphus+352670.200.1.1 1720712401 installed
<13>Nov 29 04:59:07 rpmi: libSDL-1.2.14-alt10 sisyphus+346015.200.2.1 1716212609 installed
<13>Nov 29 04:59:07 rpmi: libSDL-devel-1.2.14-alt10 sisyphus+346015.200.2.1 1716212609 installed
<13>Nov 29 04:59:07 rpmi: libSDL_net-1.2.8-alt3.git9a629d6 sisyphus+346019.200.2.1 1716214192 installed
<13>Nov 29 04:59:07 rpmi: libcanberra-0.30-alt3 sisyphus+275093.100.2.3 1624562350 installed
<13>Nov 29 04:59:08 rpmi: pipewire-libs-1.2.7-alt1 sisyphus+363440.100.1.1 1732632760 installed
<13>Nov 29 04:59:08 rpmi: pipewire-jack-libs-1.2.7-alt1 sisyphus+363440.100.1.1 1732632760 installed
<13>Nov 29 04:59:08 rpmi: libfluidsynth-2.4.0-alt1 sisyphus+361632.100.1.1 1730616725 installed
<13>Nov 29 04:59:08 rpmi: libfluidsynth-devel-2.4.0-alt1 sisyphus+361632.100.1.1 1730616725 installed
<13>Nov 29 04:59:08 rpmi: libSDL_net-devel-1.2.8-alt3.git9a629d6 sisyphus+346019.200.2.1 1716214192 installed
<13>Nov 29 04:59:08 rpmi: libalsa-devel-1:1.2.12-alt1 sisyphus+352670.200.1.1 1720712401 installed
<13>Nov 29 04:59:08 rpmi: git-core-2.42.2-alt1 sisyphus+348068.100.1.1 1715721632 installed
<13>Nov 29 04:59:08 rpmi: curl-8.11.0-alt1 sisyphus+361800.100.1.1 1730880969 installed
<13>Nov 29 04:59:08 rpmi: libcurl-devel-8.11.0-alt1 sisyphus+361800.100.1.1 1730880969 installed
<13>Nov 29 04:59:08 rpmi: libgtk+3-devel-3.24.43-alt1 sisyphus+352627.100.1.1 1720700731 installed
<13>Nov 29 04:59:08 rpmi: libmikmod-devel-3.3.11.1-alt2 sisyphus+278211.100.1.1 1626077581 installed
<13>Nov 29 04:59:08 rpmi: libspeechd-devel-0.11.5-alt2 sisyphus+350492.300.2.1 1717751826 installed
<13>Nov 29 04:59:08 rpmi: gcc-c++-14-alt1 sisyphus+360995.300.1.1 1730139222 installed
<13>Nov 29 04:59:08 rpmi: liba52-devel-0.8.0-alt1 sisyphus+349892.100.1.1 1716987412 installed
<13>Nov 29 04:59:08 rpmi: libfaad-devel-2.11.1-alt1 sisyphus+338260.100.2.2 1705755212 installed
<13>Nov 29 04:59:08 rpmi: libgif-devel-4.1.6-alt3 sisyphus+276911.100.1.3 1625273979 installed
<13>Nov 29 04:59:08 rpmi: libmad-devel-0.15.1b-alt9 sisyphus+278239.100.1.1 1626080123 installed
<13>Nov 29 04:59:08 rpmi: libmpeg2-devel-0.5.1-alt4.svn20120718 sisyphus+285823.100.1.1 1632416716 installed
<13>Nov 29 04:59:08 rpmi: libtheora-devel-2:1.1.1-alt6 sisyphus+277967.100.1.1 1625928129 installed
<13>Nov 29 04:59:08 rpmi: libjpeg-devel-2:3.0.2-alt2.1 sisyphus+340135.100.1.1 1707449145 installed
<13>Nov 29 04:59:08 rpmi: libfribidi-devel-1.0.16-alt1 sisyphus+358393.100.1.1 1727333692 installed
<13>Nov 29 04:59:08 rpmi: libreadline-devel-8.2.10-alt1 sisyphus+338911.100.4.1 1706717067 installed
Building target platforms: x86_64
Building for target x86_64
Wrote: /usr/src/in/nosrpm/scummvm-2.8.0-alt1.nosrc.rpm (w1.gzdio)
Installing scummvm-2.8.0-alt1.src.rpm
Building target platforms: x86_64
Building for target x86_64
Executing(%prep): /bin/sh -e /usr/src/tmp/rpm-tmp.5672
+ umask 022
+ /bin/mkdir -p /usr/src/RPM/BUILD
+ cd /usr/src/RPM/BUILD
+ cd /usr/src/RPM/BUILD
+ rm -rf scummvm-2.8.0
+ echo 'Source #0 (scummvm-2.8.0.tar.gz):'
Source #0 (scummvm-2.8.0.tar.gz):
+ /usr/bin/gzip -dc /usr/src/RPM/SOURCES/scummvm-2.8.0.tar.gz
+ /bin/tar -xf -
+ cd scummvm-2.8.0
+ /bin/chmod -c -Rf u+rwX,go-w .
+ echo 'Patch #0 (scummvm-1.3.0-mp2player.patch):'
Patch #0 (scummvm-1.3.0-mp2player.patch):
+ /usr/bin/patch -p1
patching file common/algorithm.h
Hunk #1 succeeded at 25 (offset -3 lines).
+ exit 0
Executing(%build): /bin/sh -e /usr/src/tmp/rpm-tmp.36416
+ umask 022
+ /bin/mkdir -p /usr/src/RPM/BUILD
+ cd /usr/src/RPM/BUILD
+ cd scummvm-2.8.0
+ export CXXFLAGS=-DFS_API_VERSION=0x0202
+ CXXFLAGS=-DFS_API_VERSION=0x0202
+ ./configure --prefix=/usr --bindir=/usr/bin --mandir=/usr/share/man --libdir=/usr/lib64 --enable-release --enable-plugins --default-dynamic --disable-nasm --disable-tremor --enable-text-console --enable-all-engines --enable-vkeybd
Running ScummVM configure...
Looking for C++ compiler... g++
Checking if compiler supports C++11... yes
Checking for compiler version... GCC 14, ok
Checking if C++11 initializer list is available... yes
Checking if C++11 std::nullptr_t is available... yes
Checking if C++11 alignas and alignof keywords are available... yes
Using LLD linker... no
Using Mold linker... no
Checking for whether C++ compiler accepts -Wglobal-constructors... no
Checking for whether C++ compiler accepts -Wno-undefined-var-template... no
Checking for whether C++ compiler accepts -Wno-pragma-pack... no
Checking for whether C++ compiler accepts -Wno-address-of-packed-member... yes
Checking endianness... little
Checking 64-bitness... yes
Type with 1 byte... char
Type with 2 bytes... short
Type with 4 bytes... int
Type with 8 bytes... long
Alignment required... no
Checking host CPU architecture... x86_64
Checking hosttype... linux-gnu
Checking for pkg-config... yes
Looking for sdl-config... /usr/bin/sdl-config
Checking for SDL... yes
Checking for SDL_Net... yes
Checks for ENet...
   Checking for sendmsg... yes
   Checking for recvmsg... yes
Optional checks for ENet...
   Checking for getaddrinfo... yes
   Checking for getnameinfo... yes
   Checking for gethostbyaddr_r... yes
   Checking for gethostbyname_r... yes
   Checking for poll... yes
   Checking for fcntl... yes
   Checking for inet_pton... yes
   Checking for inet_ntop... yes
   Checking for msghdr.msg_flags... yes
   Checking for socklen_t... yes
Checking if host is POSIX compliant... yes
Checking if posix_spawn is supported... yes
Checking if fseeko with 64-bit off_t is supported... yes
Checking whether to have a verbose build... no
Checking whether building plugins was requested... yes
Checking whether building plugins is supported... yes
Checking if detection features building statically... yes
Checking if building detection features for all engines... yes
Checking for Ogg... yes
Checking for TTS libraries... yes
Checking for Vorbis... yes
Checking for Tremor... no (Vorbis/Tremor support is mutually exclusive)
Checking for OPL2LPT... no
Checking for RetroWave OPL3... no
Checking for FLAC >= 1.0.1... yes
Checking for MAD... yes
Checking for ALSA >= 0.9... yes
Checking for libjpeg >= v6b... yes
Checking for PNG >= 1.2.8... yes
Checking for GIF >= 5.0.0... no
Checking for libtheoradec >= 1.0... yes
Checking for libvpx >= 1.6... no
Checking for libfaad... yes
Checking for SEQ MIDI... yes
Checking for sndio... no
Checking for TiMidity... yes
Checking for zlib... yes
Checking for libmpeg2 >= 0.4.0... yes
Checking for liba52... yes
Looking for curl-config... /usr/bin/curl-config
Checking for libcurl... yes
Looking for mikmod-config... /usr/bin/libmikmod-config
Checking for libmikmod... yes
Cloud integration... local, servers
Checking for FluidSynth... yes
Checking for FluidLite... no (FluidSynth/FluidLite support is mutually exclusive)
Checking for Sonivox... no
Checking for readline... yes
Checking for libunity... no
Checking for gtk... yes
Package bzip2 was not found in the pkg-config search path.
Perhaps you should add the directory containing `bzip2.pc'
to the PKG_CONFIG_PATH environment variable
Package 'bzip2', required by 'freetype2', not found
Checking for FreeType2... yes
Checking for OpenGL... yes (OpenGL)
Checking for OpenGL for game... yes (shaders enabled)
Checking for Linux CD-ROM... yes
Checking for curl... yes
Checking for FriBidi... yes
Test C++11 compatibility during compilation... no
Checking for Discord RPC... no
Building translation support... yes (with runtime language detection)
Building taskbar integration support... no
Building system dialogs support... gtk
Building text-to-speech support... speech dispatcher
Building TinyGL support... yes
Building Bink video support... yes
Building updates support... no
Enabling Address Sanitizer... no
Enabling Thread Sanitizer... no
Enabling Undefined Behavior Sanitizer... no
Enabling x86/amd64 SSE2... yes
Enabling x86/amd64 AVX2... yes
Enabling ARM NEON... no
Backend... sdl (1.2.14), 16bit color, high resolution, TinyGL, savegame timestamp, HQ and Edge scalers, aspect ratio correction, MT-32 emulator, Lua, Nuked OPL emulator, text console, virtual keyboard, cloud, ENet
WARNING: Disabling engine Hpl1 because the following dependencies are unmet: GIF 

Engines (plugins):
    SCUMM [all games]
    Access 
    ADL 
    AGI 
    AGOS [all games]
    Adventure Game Studio 
    Sanitarium 
    Lord Avalot d'Argent 
    Beavis and Butthead in Virtual Stupidity 
    Blade Runner 
    The Journeyman Project 2: Buried in Time 
    CGE 
    CGE2 
    Chamber 
    Chewy: Esc from F5 
    Cinematique evo 1 
    Magic Composer 
    Crab 
    Cinematique evo 2 
    Lost Eden 
    Cryo Omni3D games [all games]
    Macromedia Director 
    Dungeon Master 
    Dragon History 
    Blazing Dragons 
    Drascula: The Vampire Strikes Back 
    Dreamweb 
    Escape From Hell 
    Freescape 
    Glk Interactive Fiction games 
    UFOs 
    Gobli*ns 
    The Griffon Legend 
    Grim [all games]
    Groovie [all games]
    Hades Challenge 
    Hyperspace Delivery Boy! 
    Hopkins FBI 
    Hugo Trilogy 
    Hypnotix Inc. 
    In Cold Blood 
    Illusions Engine 
    The Immortal 
    Kingdom: The Far Reaches 
    Kyra [all games]
    Labyrinth of Time 
    The Last Express 
    Lilliput 
    Lure of the Temptress 
    MacVenture 
    MADE 
    MADS [all games]
    Might and Magic [all games]
    Mohawk [all games]
    Mortevielle 
    mTropolis 
    Mutation of JB 
    Myst 3 
    Nancy Drew 
    Neverhood 
    Nikita Game Interface 
    Parallaction 
    The Journeyman Project: Pegasus Prime 
    Red Comrades 
    Pink Panther 
    Playground 3d: the testing and playground environment for 3d renderers 
    Plumbers Don't Wear Ties 
    The Prince and The Coward 
    Private Eye 
    Flight of the Amazon Queen 
    SAGA [all games]
    SAGA2 
    SCI [all games]
    The Lost Files of Sherlock Holmes 
    Beneath a Steel Sky 
    Sludge 
    The Longest Journey 
    Star Trek 25th Anniversary/Judgment Rites 
    Mission Supernova 
    Broken Sword 
    Broken Sword II 
    Broken Sword 2.5 
    Teen Agent 
    TestBed: the Testing framework 
    Tetraedge 
    Tinsel 
    Starship Titanic 
    3 Skulls of the Toltecs 
    Tony Tough and the Night of Roasted Moths 
    Toonstruck 
    Touche: The Adventures of the Fifth Musketeer 
    Trecision Adventure Module 
    TsAGE 
    Bud Tucker in Double Trouble 
    Little Big Adventure 
    Ultima [all games]
    V-Cruise 
    Voyeur 
    WAGE 
    The Watchmaker 
    Wintermute [all games]
    Z-Vision 

Engines Skipped:
    Hpl1 

WARNING: This ScummVM build contains the following UNSTABLE engines:
    Lord Avalot d'Argent 
    Chamber 
    Crab 
    Lost Eden 
    Dungeon Master 
    Grim [Escape from Monkey Island]
    In Cold Blood 
    The Immortal 
    The Last Express 
    Lilliput 
    MacVenture 
    MADS [MADS V2]
    Might and Magic 
    Mohawk [Where in Time is Carmen Sandiego?]
    Mutation of JB 
    Playground 3d: the testing and playground environment for 3d renderers 
    Sludge 
    Star Trek 25th Anniversary/Judgment Rites 
    TestBed: the Testing framework 
    Ultima [Ultima I - The First Age of Darkness]
    WAGE 
    The Watchmaker 
    Wintermute [Wintermute3D]

Creating engines/engines.mk
Creating engines/detection_table.h
Creating engines/plugins_table.h
Creating config.h
Creating config.mk
+ make -j8
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
fatal: not a git repository (or any of the parent directories): .git
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/detection.o
In file included from ./common/config-manager.h:27,
                 from engines/agi/detection.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32,
                 from engines/agi/detection.cpp:33:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/asylum/detection.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./engines/advancedDetector.h:25,
                 from engines/asylum/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/access/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/access/events.h:27,
                 from ./engines/access/access.h:41,
                 from engines/access/detection.cpp:25:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/agos/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/detection.cpp:36:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/buried/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/buried/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/wagparser.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from engines/agi/wagparser.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/adl/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from engines/adl/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/avalanche/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/avalanche/detection.cpp:29:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/bbvs/detection.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./engines/advancedDetector.h:25,
                 from engines/bbvs/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/bladerunner/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/bladerunner/archive.h:26,
                 from ./engines/bladerunner/bladerunner.h:25,
                 from engines/bladerunner/detection.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/cge/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/cge/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/cge2/detection.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./engines/advancedDetector.h:25,
                 from engines/cge2/detection.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/cine/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/cine/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/cine/gfx.h:27,
                 from ./engines/cine/cine.h:44,
                 from engines/cine/detection.cpp:27:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/cge/fileio.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/cge/fileio.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/chewy/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/chewy/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/chamber/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/chamber/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/crab/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/crab/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/composer/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/composer/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/cge2/fileio.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/cge2/fileio.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/dm/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/dm/detection.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/cryomni3d/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/cryomni3d/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/cursorman.h:26,
                 from ./engines/cryomni3d/cryomni3d.h:35,
                 from engines/cryomni3d/detection.cpp:30:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/cruise/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/cruise/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/cryo/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/cryo/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/draci/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/draci/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/dreamweb/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/dreamweb/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/adl/disk.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./common/substream.h:25,
                 from engines/adl/disk.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/drascula/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/drascula/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/efh/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/efh/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/dragons/detection.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./engines/advancedDetector.h:25,
                 from engines/dragons/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/director/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/director/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/macgui/macwindowmanager.h:28,
                 from ./engines/director/director.h:27,
                 from engines/director/detection.cpp:31:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/ags/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/glk/advsys/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/glk/advsys/detection.h:25,
                 from engines/glk/advsys/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/freescape/detection.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./common/events.h:27,
                 from ./engines/freescape/freescape.h:26,
                 from engines/freescape/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/glk/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/glk/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/glk/alan2/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/glk/alan2/detection.h:25,
                 from engines/glk/alan2/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/glk/adrift/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/glk/adrift/detection.h:25,
                 from engines/glk/adrift/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/glk/agt/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/glk/agt/detection.h:25,
                 from engines/glk/agt/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/glk/alan3/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/glk/alan3/detection.h:25,
                 from engines/glk/alan3/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/glk/hugo/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/glk/hugo/detection.h:25,
                 from engines/glk/hugo/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/glk/glulx/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/glk/glulx/detection.h:25,
                 from engines/glk/glulx/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/glk/scott/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from engines/glk/scott/detection.cpp:33:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/glk/comprehend/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/glk/comprehend/detection.h:25,
                 from engines/glk/comprehend/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/glk/archetype/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/glk/archetype/detection.h:25,
                 from engines/glk/archetype/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/glk/jacl/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/glk/jacl/detection.h:25,
                 from engines/glk/jacl/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/glk/quest/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/glk/quest/detection.h:25,
                 from engines/glk/quest/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/glk/magnetic/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/glk/magnetic/detection.h:25,
                 from engines/glk/magnetic/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/gnap/detection.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./common/events.h:27,
                 from ./engines/gnap/gnap.h:26,
                 from engines/gnap/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/glk/advsys/game.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/glk/tads/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/glk/tads/detection.h:25,
                 from engines/glk/tads/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/glk/level9/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/glk/level9/detection.h:25,
                 from engines/glk/level9/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/glk/blorb.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/glk/streams.h:26,
                 from ./engines/glk/blorb.h:26,
                 from engines/glk/blorb.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/gob/detection/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/gob/detection/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/grim/detection.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./engines/advancedDetector.h:25,
                 from engines/grim/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/groovie/detection.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/groovie/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/griffon/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/griffon/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/hadesch/detection.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/hadesch/detection.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/hopkins/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/hopkins/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/hdb/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/hdb/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/hpl1/detection.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./engines/advancedDetector.h:25,
                 from ./engines/hpl1/detection.h:25,
                 from engines/hpl1/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/hugo/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/hugo/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/illusions/detection.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./engines/advancedDetector.h:25,
                 from engines/illusions/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/gob/dataio.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./common/substream.h:25,
                 from engines/gob/dataio.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/icb/detection.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./engines/advancedDetector.h:25,
                 from engines/icb/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/glk/zcode/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/glk/zcode/detection.h:25,
                 from engines/glk/zcode/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/hypno/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/hypno/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/lab/detection.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./engines/advancedDetector.h:25,
                 from engines/lab/detection.cpp:30:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/immortal/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/immortal/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/kyra/detection.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./engines/advancedDetector.h:25,
                 from engines/kyra/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/kingdom/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/kingdom/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/lastexpress/detection.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./engines/advancedDetector.h:25,
                 from engines/lastexpress/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/lilliput/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/lilliput/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/lilliput/script.h:26,
                 from ./engines/lilliput/lilliput.h:26,
                 from engines/lilliput/detection.cpp:27:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/made/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/made/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/lure/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/lure/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/mohawk/myst_metaengine.o
In file included from ./common/config-manager.h:27,
                 from ./engines/mohawk/myst_metaengine.h:25,
                 from engines/mohawk/myst_metaengine.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/macventure/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/macventure/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/macgui/macwindowmanager.h:28,
                 from ./engines/macventure/gui.h:33,
                 from ./engines/macventure/macventure.h:45,
                 from engines/macventure/detection.cpp:25:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/mm/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/mm/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/mads/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/mads/detection.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/mads/events.h:27,
                 from ./engines/mads/hotspots.h:26,
                 from ./engines/mads/scene.h:30,
                 from ./engines/mads/game.h:30,
                 from ./engines/mads/dialogs.h:26,
                 from ./engines/mads/conversations.h:29,
                 from ./engines/mads/mads.h:32,
                 from engines/mads/detection.cpp:29:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/mohawk/riven_metaengine.o
In file included from ./common/config-manager.h:27,
                 from ./engines/mohawk/riven_metaengine.h:25,
                 from engines/mohawk/riven_metaengine.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/mohawk/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/mohawk/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/neverhood/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/neverhood/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/mutationofjb/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/mutationofjb/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/mortevielle/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/mortevielle/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/mortevielle/mortevielle.h:34,
                 from engines/mortevielle/detection.cpp:26:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/mtropolis/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/mtropolis/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/nancy/detection.o
In file included from ./common/config-manager.h:27,
                 from engines/nancy/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ngi/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/ngi/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/pegasus/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/pegasus/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/myst3/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/translation.h:26,
                 from engines/myst3/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/pink/detection.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/pink/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/pink/pda_mgr.h:25,
                 from ./engines/pink/pink.h:36,
                 from engines/pink/detection.cpp:26:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/playground3d/detection.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./engines/advancedDetector.h:25,
                 from engines/playground3d/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/plumbers/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/plumbers/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/parallaction/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/parallaction/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/parallaction/parallaction.h:26,
                 from engines/parallaction/detection.cpp:30:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/prince/detection.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./engines/advancedDetector.h:25,
                 from engines/prince/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/petka/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/petka/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/queen/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/queen/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/saga/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/saga/detection.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/queen/version.o
In file included from ./common/config-manager.h:27,
                 from engines/queen/version.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/private/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/private/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/saga2/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/saga2/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/sci/detection.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./engines/advancedDetector.h:25,
                 from engines/sci/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/ThemeEval.h:28,
                 from engines/sci/detection.cpp:28:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/sherlock/detection.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./engines/advancedDetector.h:25,
                 from engines/sherlock/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/sherlock/talk.h:29,
                 from ./engines/sherlock/sherlock.h:50,
                 from engines/sherlock/detection.cpp:25:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/sludge/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from engines/sludge/detection.cpp:21:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/stark/detection.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./engines/advancedDetector.h:25,
                 from engines/stark/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/file_nes.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/scumm/file.h:25,
                 from ./engines/scumm/file_nes.h:25,
                 from engines/scumm/file_nes.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/sky/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/sky/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/scumm/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/sword2/detection.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./engines/advancedDetector.h:25,
                 from engines/sword2/detection.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/startrek/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/startrek/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/startrek/object.h:26,
                 from ./engines/startrek/startrek.h:48,
                 from engines/startrek/detection.cpp:30:
./engines/startrek/fixedint.h:58:54: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   58 |         explicit TFixedInt<T, totalBits, decimalBits>(const TFixedInt<T2, otherTB, otherDB> &fi) {
      |                                                      ^
./engines/startrek/fixedint.h:58:54: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/sword25/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/sword25/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/file.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/scumm/file.h:25,
                 from engines/scumm/file.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/tetraedge/detection.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./engines/advancedDetector.h:25,
                 from ./engines/tetraedge/detection.h:25,
                 from engines/tetraedge/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/titanic/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/titanic/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/toltecs/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/toltecs/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/sword1/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/sword1/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/supernova/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/supernova/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/tony/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/tony/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/tinsel/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/tinsel/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/testbed/detection.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./engines/advancedDetector.h:25,
                 from engines/testbed/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/trecision/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/trecision/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/teenagent/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/teenagent/detection.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/toon/detection.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./engines/advancedDetector.h:25,
                 from engines/toon/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/touche/detection.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./engines/advancedDetector.h:25,
                 from engines/touche/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/tucker/detection.o
In file included from ./common/config-manager.h:27,
                 from engines/tucker/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/tsage/detection.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./engines/advancedDetector.h:25,
                 from engines/tsage/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/twine/detection.o
In file included from ./common/config-manager.h:27,
                 from engines/twine/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/watchmaker/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/watchmaker/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/wage/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/wage/detection.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ultima/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/ultima/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/zvision/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/zvision/detection.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/vcruise/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/vcruise/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      base/test_new_standards.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/platform/sdl/posix/posix-main.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./backends/base-backend.h:25,
                 from ./backends/modular-backend.h:25,
                 from ./backends/platform/sdl/sdl.h:27,
                 from ./backends/platform/sdl/posix/posix.h:25,
                 from backends/platform/sdl/posix/posix-main.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/platform/sdl/sdl-window.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./backends/platform/sdl/sdl-window.h:27,
                 from backends/platform/sdl/sdl-window.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/wintermute/detection.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./engines/advancedDetector.h:25,
                 from engines/wintermute/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/voyeur/detection.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from engines/voyeur/detection.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/platform/sdl/posix/posix.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./backends/base-backend.h:25,
                 from ./backends/modular-backend.h:25,
                 from ./backends/platform/sdl/sdl.h:27,
                 from ./backends/platform/sdl/posix/posix.h:25,
                 from backends/platform/sdl/posix/posix.cpp:35:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/achievements.o
In file included from ./common/config-manager.h:27,
                 from engines/achievements.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/platform/sdl/sdl.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./backends/base-backend.h:25,
                 from ./backends/modular-backend.h:25,
                 from ./backends/platform/sdl/sdl.h:27,
                 from backends/platform/sdl/sdl.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/cursorman.h:26,
                 from backends/platform/sdl/sdl.cpp:53:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/game.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/translation.h:26,
                 from engines/game.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/dialogs.o
In file included from ./common/config-manager.h:27,
                 from engines/dialogs.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from engines/dialogs.cpp:31:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/obsolete.o
In file included from ./common/config-manager.h:27,
                 from engines/obsolete.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/savestate.o
In file included from ./engines/engine.h:30,
                 from engines/savestate.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      base/main.o
In file included from ./engines/engine.h:30,
                 from base/main.cpp:33:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from base/main.cpp:56:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/metaengine.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from engines/metaengine.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/engine.o
In file included from ./engines/engine.h:30,
                 from engines/engine.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from engines/engine.cpp:48:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/chooser.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/translation.h:26,
                 from gui/chooser.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/browser.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./gui/object.h:27,
                 from ./gui/dialog.h:29,
                 from ./gui/browser.h:25,
                 from gui/browser.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/browser.cpp:23:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/advancedDetector.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from engines/advancedDetector.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from engines/advancedDetector.cpp:38:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      base/plugins.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from base/plugins.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/dialog.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from gui/dialog.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/dialog.cpp:24:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/console.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./gui/object.h:27,
                 from ./gui/dialog.h:29,
                 from ./gui/console.h:25,
                 from gui/console.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/ThemeEval.h:28,
                 from gui/console.cpp:25:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/debugger.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from gui/debugger.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/dump-all-dialogs.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from gui/dump-all-dialogs.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/dump-all-dialogs.cpp:31:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/EventRecorder.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./gui/EventRecorder.h:25,
                 from gui/EventRecorder.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/error.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./gui/object.h:27,
                 from ./gui/dialog.h:29,
                 from ./gui/message.h:25,
                 from gui/error.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/about.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from gui/about.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/about.cpp:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/helpdialog.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/translation.h:26,
                 from gui/helpdialog.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/helpdialog.cpp:24:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/filebrowser-dialog.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./gui/object.h:27,
                 from ./gui/dialog.h:29,
                 from ./gui/filebrowser-dialog.h:25,
                 from gui/filebrowser-dialog.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/filebrowser-dialog.cpp:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/imagealbum-dialog.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./gui/object.h:27,
                 from ./gui/dialog.h:29,
                 from gui/imagealbum-dialog.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/imagealbum-dialog.cpp:26:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      base/commandLine.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./engines/advancedDetector.h:25,
                 from base/commandLine.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/editgamedialog.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./gui/object.h:27,
                 from ./gui/dialog.h:29,
                 from ./gui/editgamedialog.h:26,
                 from gui/editgamedialog.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/editgamedialog.cpp:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/message.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from gui/message.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/message.cpp:26:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/saveload.o
In file included from ./common/config-manager.h:27,
                 from gui/saveload.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/gui-manager.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./common/events.h:27,
                 from gui/gui-manager.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/gui-manager.cpp:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/object.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./gui/object.h:27,
                 from gui/object.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/object.cpp:26:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/massadd.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from gui/massadd.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/massadd.h:29,
                 from gui/massadd.cpp:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/MetadataParser.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/formats/xmlparser.h:28,
                 from ./gui/MetadataParser.h:25,
                 from gui/MetadataParser.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./common/formats/xmlparser.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/textviewer.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from gui/textviewer.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/textviewer.cpp:29:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/themebrowser.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./gui/object.h:27,
                 from ./gui/dialog.h:29,
                 from ./gui/themebrowser.h:25,
                 from gui/themebrowser.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/themebrowser.cpp:25:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/shaderbrowser-dialog.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./gui/object.h:27,
                 from ./gui/dialog.h:29,
                 from ./gui/shaderbrowser-dialog.h:25,
                 from gui/shaderbrowser-dialog.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/ThemeEval.h:28,
                 from gui/shaderbrowser-dialog.cpp:31:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/predictivedialog.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./gui/object.h:27,
                 from ./gui/dialog.h:29,
                 from ./gui/predictivedialog.h:25,
                 from gui/predictivedialog.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/predictivedialog.cpp:25:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/Tooltip.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/font.h:27,
                 from ./gui/widget.h:29,
                 from gui/Tooltip.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/Tooltip.cpp:25:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/ThemeLayout.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from gui/ThemeLayout.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/ThemeLayout.cpp:25:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/ThemeEval.o
In file included from ./gui/ThemeEval.h:28,
                 from gui/ThemeEval.cpp:22:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/font.h:27,
                 from ./gui/ThemeEval.h:31:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/saveload-dialog.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./gui/object.h:27,
                 from ./gui/dialog.h:29,
                 from ./gui/saveload-dialog.h:25,
                 from gui/saveload-dialog.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/saveload-dialog.cpp:34:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/animation/Animation.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/unknown-game-dialog.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./gui/object.h:27,
                 from ./gui/dialog.h:29,
                 from ./gui/unknown-game-dialog.h:25,
                 from gui/unknown-game-dialog.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/unknown-game-dialog.cpp:28:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/animation/SequenceAnimationComposite.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/animation/RepeatAnimationWrapper.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/ThemeEngine.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from gui/ThemeEngine.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/cursorman.h:26,
                 from gui/ThemeEngine.cpp:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/widgets/edittext.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from gui/widgets/edittext.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/widgets/edittext.cpp:25:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/launcher.o
In file included from ./common/config-manager.h:27,
                 from gui/launcher.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./common/formats/xmlparser.h:32,
                 from ./gui/MetadataParser.h:25,
                 from ./gui/launcher.h:35,
                 from gui/launcher.cpp:37:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/widgets/editable.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from gui/widgets/editable.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/widgets/editable.cpp:26:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/widgets/groupedlist.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from gui/widgets/groupedlist.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/widgets/groupedlist.cpp:31:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/widgets/richtext.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from gui/widgets/richtext.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/macgui/macwindowmanager.h:28,
                 from ./graphics/macgui/mactext-canvas.h:25,
                 from ./graphics/macgui/mactext.h:25,
                 from gui/widgets/richtext.cpp:25:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/widget.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from gui/widget.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/widget.cpp:29:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/widgets/list.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from gui/widgets/list.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/widgets/list.cpp:29:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/ThemeParser.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./gui/ThemeEngine.h:26,
                 from gui/ThemeParser.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/ThemeEval.h:28,
                 from gui/ThemeParser.cpp:23:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/widgets/scrollbar.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from gui/widgets/scrollbar.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/widgets/scrollbar.cpp:26:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/widgets/popup.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from gui/widgets/popup.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/widgets/popup.cpp:23:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/widgets/scrollcontainer.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/font.h:27,
                 from ./gui/widget.h:29,
                 from ./gui/widgets/scrollcontainer.h:25,
                 from gui/widgets/scrollcontainer.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/widgets/scrollcontainer.cpp:24:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/downloaddialog.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./gui/object.h:27,
                 from ./gui/dialog.h:29,
                 from ./gui/downloaddialog.h:25,
                 from gui/downloaddialog.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/downloaddialog.cpp:31:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/widgets/grid.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from gui/widgets/grid.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/widgets/grid.cpp:29:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/widgets/tab.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/font.h:27,
                 from ./gui/widget.h:29,
                 from ./gui/widgets/tab.h:25,
                 from gui/widgets/tab.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/widgets/tab.cpp:24:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/base-backend.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./backends/base-backend.h:25,
                 from backends/base-backend.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/cloudconnectionwizard.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./gui/object.h:27,
                 from ./gui/dialog.h:29,
                 from ./gui/cloudconnectionwizard.h:28,
                 from gui/cloudconnectionwizard.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/cloudconnectionwizard.cpp:38:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/remotebrowser.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./gui/object.h:27,
                 from ./gui/dialog.h:29,
                 from ./gui/remotebrowser.h:25,
                 from gui/remotebrowser.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/remotebrowser.cpp:23:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/downloadpacksdialog.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./gui/object.h:27,
                 from ./gui/dialog.h:29,
                 from ./gui/downloadpacksdialog.h:25,
                 from gui/downloadpacksdialog.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/downloadpacksdialog.cpp:33:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/fs/abstract-fs.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./backends/fs/abstract-fs.h:27,
                 from backends/fs/abstract-fs.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/fluidsynth-dialog.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./gui/object.h:27,
                 from ./gui/dialog.h:29,
                 from ./gui/fluidsynth-dialog.h:26,
                 from gui/fluidsynth-dialog.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/fluidsynth-dialog.cpp:23:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/audiocd/audiocd-stream.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/audiocd/audiocd-stream.h:47,
                 from backends/audiocd/audiocd-stream.cpp:43:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/fs/stdiostream.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/modular-backend.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./backends/base-backend.h:25,
                 from ./backends/modular-backend.h:25,
                 from backends/modular-backend.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/audiocd/default/default-audiocd.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from ./backends/audiocd/audiocd.h:25,
                 from ./backends/audiocd/default/default-audiocd.h:25,
                 from backends/audiocd/default/default-audiocd.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/keymapper/action.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./common/events.h:27,
                 from ./backends/keymapper/action.h:28,
                 from backends/keymapper/action.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/keymapper/input-watcher.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./common/events.h:27,
                 from ./backends/keymapper/hardware-input.h:28,
                 from ./backends/keymapper/input-watcher.h:27,
                 from backends/keymapper/input-watcher.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/keymapper/standard-actions.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/events/default/default-events.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from backends/events/default/default-events.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/log/log.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from backends/log/log.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/keymapper/hardware-input.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./common/events.h:27,
                 from ./backends/keymapper/hardware-input.h:28,
                 from backends/keymapper/hardware-input.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/midi/dmedia.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/keymapper/virtual-mouse.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./common/events.h:27,
                 from ./backends/keymapper/virtual-mouse.h:27,
                 from backends/keymapper/virtual-mouse.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from backends/keymapper/virtual-mouse.cpp:31:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/midi/sndio.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/keymapper/keymapper.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./common/events.h:27,
                 from ./backends/keymapper/hardware-input.h:28,
                 from ./backends/keymapper/keymap.h:27,
                 from ./backends/keymapper/keymapper.h:27,
                 from backends/keymapper/keymapper.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/midi/seq.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from ./audio/musicplugin.h:25,
                 from backends/midi/seq.cpp:38:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/midi/stmidi.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/midi/alsa.o
In file included from ./common/config-manager.h:27,
                 from backends/midi/alsa.cpp:29:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/keymapper/remap-widget.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/font.h:27,
                 from ./gui/widget.h:29,
                 from ./backends/keymapper/remap-widget.h:28,
                 from backends/keymapper/remap-widget.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from backends/keymapper/remap-widget.cpp:31:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/saves/savefile.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/cloudmanager.h:25,
                 from backends/saves/savefile.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/midi/timidity.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from ./audio/musicplugin.h:25,
                 from backends/midi/timidity.cpp:45:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/timer/default/default-timer.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/timer/default/default-timer.h:28,
                 from backends/timer/default/default-timer.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/keymapper/keymap.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./common/events.h:27,
                 from ./backends/keymapper/hardware-input.h:28,
                 from ./backends/keymapper/keymap.h:27,
                 from backends/keymapper/keymap.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/cloudicon.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from backends/cloud/cloudicon.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/iso8601.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/storagefile.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/basestorage.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/basestorage.h:25,
                 from backends/cloud/basestorage.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      gui/options.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./gui/object.h:27,
                 from ./gui/dialog.h:29,
                 from ./gui/browser.h:25,
                 from gui/options.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from gui/options.cpp:26:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/downloadrequest.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/downloadrequest.h:27,
                 from backends/cloud/downloadrequest.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/storage.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from backends/cloud/storage.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/saves/default/default-saves.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/cloudmanager.h:25,
                 from backends/saves/default/default-saves.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/folderdownloadrequest.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/folderdownloadrequest.h:26,
                 from backends/cloud/folderdownloadrequest.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/cloudmanager.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/cloudmanager.h:25,
                 from backends/cloud/cloudmanager.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/box/boxlistdirectorybyidrequest.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/box/boxlistdirectorybyidrequest.h:25,
                 from backends/cloud/box/boxlistdirectorybyidrequest.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/box/boxstorage.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/basestorage.h:25,
                 from ./backends/cloud/id/idstorage.h:25,
                 from ./backends/cloud/box/boxstorage.h:25,
                 from backends/cloud/box/boxstorage.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/box/boxtokenrefresher.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/box/boxtokenrefresher.h:25,
                 from backends/cloud/box/boxtokenrefresher.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/dropbox/dropboxcreatedirectoryrequest.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/dropbox/dropboxcreatedirectoryrequest.h:25,
                 from backends/cloud/dropbox/dropboxcreatedirectoryrequest.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/box/boxuploadrequest.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/box/boxuploadrequest.h:25,
                 from backends/cloud/box/boxuploadrequest.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/dropbox/dropboxstorage.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/basestorage.h:25,
                 from ./backends/cloud/dropbox/dropboxstorage.h:25,
                 from backends/cloud/dropbox/dropboxstorage.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/dropbox/dropboxinforequest.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/dropbox/dropboxinforequest.h:25,
                 from backends/cloud/dropbox/dropboxinforequest.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/dropbox/dropboxuploadrequest.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/dropbox/dropboxuploadrequest.h:25,
                 from backends/cloud/dropbox/dropboxuploadrequest.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/dropbox/dropboxtokenrefresher.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/dropbox/dropboxtokenrefresher.h:25,
                 from backends/cloud/dropbox/dropboxtokenrefresher.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/savessyncrequest.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/savessyncrequest.h:26,
                 from backends/cloud/savessyncrequest.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/dropbox/dropboxlistdirectoryrequest.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/dropbox/dropboxlistdirectoryrequest.h:25,
                 from backends/cloud/dropbox/dropboxlistdirectoryrequest.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/googledrive/googledrivelistdirectorybyidrequest.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/googledrive/googledrivelistdirectorybyidrequest.h:25,
                 from backends/cloud/googledrive/googledrivelistdirectorybyidrequest.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/googledrive/googledrivetokenrefresher.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/googledrive/googledrivetokenrefresher.h:25,
                 from backends/cloud/googledrive/googledrivetokenrefresher.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/id/idstorage.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/basestorage.h:25,
                 from ./backends/cloud/id/idstorage.h:25,
                 from backends/cloud/id/idstorage.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/id/idcreatedirectoryrequest.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/id/idcreatedirectoryrequest.h:25,
                 from backends/cloud/id/idcreatedirectoryrequest.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/id/iddownloadrequest.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/id/iddownloadrequest.h:25,
                 from backends/cloud/id/iddownloadrequest.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/id/idresolveidrequest.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/id/idresolveidrequest.h:25,
                 from backends/cloud/id/idresolveidrequest.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/googledrive/googledrivestorage.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/basestorage.h:25,
                 from ./backends/cloud/id/idstorage.h:25,
                 from ./backends/cloud/googledrive/googledrivestorage.h:25,
                 from backends/cloud/googledrive/googledrivestorage.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/id/idlistdirectoryrequest.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/id/idlistdirectoryrequest.h:25,
                 from backends/cloud/id/idlistdirectoryrequest.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/id/idstreamfilerequest.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/id/idstreamfilerequest.h:25,
                 from backends/cloud/id/idstreamfilerequest.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/googledrive/googledriveuploadrequest.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/googledrive/googledriveuploadrequest.h:25,
                 from backends/cloud/googledrive/googledriveuploadrequest.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/onedrive/onedrivecreatedirectoryrequest.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/onedrive/onedrivecreatedirectoryrequest.h:25,
                 from backends/cloud/onedrive/onedrivecreatedirectoryrequest.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/onedrive/onedriveuploadrequest.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/onedrive/onedriveuploadrequest.h:25,
                 from backends/cloud/onedrive/onedriveuploadrequest.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/onedrive/onedrivestorage.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/basestorage.h:25,
                 from ./backends/cloud/onedrive/onedrivestorage.h:25,
                 from backends/cloud/onedrive/onedrivestorage.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/curl/connectionmanager.o
In file included from ./backends/networking/curl/connectionmanager.h:27,
                 from backends/networking/curl/connectionmanager.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/onedrive/onedrivetokenrefresher.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/onedrive/onedrivetokenrefresher.h:25,
                 from backends/cloud/onedrive/onedrivetokenrefresher.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/curl/curlrequest.o
In file included from ./backends/networking/curl/connectionmanager.h:27,
                 from backends/networking/curl/curlrequest.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/cloud/onedrive/onedrivelistdirectoryrequest.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/cloud/storage.h:31,
                 from ./backends/cloud/onedrive/onedrivelistdirectoryrequest.h:25,
                 from backends/cloud/onedrive/onedrivelistdirectoryrequest.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/curl/request.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/curl/postrequest.o
In file included from ./backends/networking/curl/connectionmanager.h:27,
                 from backends/networking/curl/postrequest.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/curl/session.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/curl/networkreadstream.o
In file included from ./backends/networking/curl/connectionmanager.h:27,
                 from backends/networking/curl/networkreadstream.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/curl/socket.o
In file included from ./backends/networking/curl/connectionmanager.h:27,
                 from backends/networking/curl/socket.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/curl/curljsonrequest.o
In file included from ./backends/networking/curl/connectionmanager.h:27,
                 from backends/networking/curl/curljsonrequest.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/curl/url.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from backends/networking/curl/url.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/curl/sessionrequest.o
In file included from ./backends/networking/curl/connectionmanager.h:27,
                 from backends/networking/curl/sessionrequest.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/sdl_net/handlers/filesajaxpagehandler.o
In file included from ./common/archive.h:31,
                 from ./backends/networking/sdl_net/handlerutils.h:26,
                 from backends/networking/sdl_net/handlers/filesajaxpagehandler.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/sdl_net/client.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./gui/object.h:27,
                 from ./backends/networking/sdl_net/handlers/indexpagehandler.h:26,
                 from ./backends/networking/sdl_net/localwebserver.h:31,
                 from backends/networking/sdl_net/client.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/sdl_net/handlers/filesbasehandler.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./backends/saves/default/default-saves.h:28,
                 from backends/networking/sdl_net/handlers/filesbasehandler.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/sdl_net/getclienthandler.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/sdl_net/handlers/downloadfilehandler.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./backends/fs/abstract-fs.h:27,
                 from ./backends/fs/fs-factory.h:26,
                 from backends/networking/sdl_net/handlers/downloadfilehandler.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/sdl_net/handlers/createdirectoryhandler.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./backends/fs/abstract-fs.h:27,
                 from ./backends/fs/fs-factory.h:26,
                 from backends/networking/sdl_net/handlers/createdirectoryhandler.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/sdl_net/handlers/indexpagehandler.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./gui/object.h:27,
                 from ./backends/networking/sdl_net/handlers/indexpagehandler.h:26,
                 from backends/networking/sdl_net/handlers/indexpagehandler.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/sdl_net/handlers/uploadfilehandler.o
In file included from ./common/archive.h:31,
                 from ./backends/networking/sdl_net/handlerutils.h:26,
                 from backends/networking/sdl_net/handlers/uploadfilehandler.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/sdl_net/handlers/resourcehandler.o
In file included from ./common/archive.h:31,
                 from ./backends/networking/sdl_net/handlerutils.h:26,
                 from backends/networking/sdl_net/handlers/resourcehandler.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/sdl_net/handlers/filespagehandler.o
In file included from ./common/archive.h:31,
                 from ./backends/networking/sdl_net/handlerutils.h:26,
                 from backends/networking/sdl_net/handlers/filespagehandler.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/enet/source/callbacks.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/enet/source/host.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/sdl_net/handlerutils.o
In file included from ./common/archive.h:31,
                 from ./backends/networking/sdl_net/handlerutils.h:26,
                 from backends/networking/sdl_net/handlerutils.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/enet/source/list.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/enet/source/compress.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/sdl_net/localwebserver.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./gui/object.h:27,
                 from ./backends/networking/sdl_net/handlers/indexpagehandler.h:26,
                 from ./backends/networking/sdl_net/localwebserver.h:31,
                 from backends/networking/sdl_net/localwebserver.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/enet/source/packet.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/sdl_net/handlers/listajaxhandler.o
In file included from ./common/archive.h:31,
                 from ./backends/networking/sdl_net/handlerutils.h:26,
                 from backends/networking/sdl_net/handlers/listajaxhandler.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/sdl_net/uploadfileclienthandler.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./backends/fs/abstract-fs.h:27,
                 from ./backends/fs/fs-factory.h:26,
                 from backends/networking/sdl_net/uploadfileclienthandler.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/sdl_net/handlers/connectcloudhandler.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./backends/fs/abstract-fs.h:27,
                 from ./backends/fs/fs-factory.h:26,
                 from backends/networking/sdl_net/handlers/connectcloudhandler.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/sdl_net/reader.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./backends/fs/abstract-fs.h:27,
                 from ./backends/fs/fs-factory.h:26,
                 from backends/networking/sdl_net/reader.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/enet/source/peer.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/enet/source/unix.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/enet/socket.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from backends/networking/enet/socket.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/enet/enet.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./backends/networking/enet/host.h:38,
                 from backends/networking/enet/enet.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/enet/host.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./backends/networking/enet/host.h:38,
                 from backends/networking/enet/host.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/vkeybd/image-map.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./backends/vkeybd/polygon.h:30,
                 from backends/vkeybd/image-map.cpp:29:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/vkeybd/polygon.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./backends/vkeybd/polygon.h:30,
                 from backends/vkeybd/polygon.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/networking/enet/source/protocol.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/graphics/opengl/framebuffer.o
In file included from ./graphics/opengl/context.h:25,
                 from ./backends/graphics/opengl/texture.h:26,
                 from ./backends/graphics/opengl/pipelines/pipeline.h:28,
                 from backends/graphics/opengl/framebuffer.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/graphics/opengl/shader.o
In file included from ./backends/graphics/opengl/shader.h:29,
                 from backends/graphics/opengl/shader.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/vkeybd/virtual-keyboard-gui.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./common/events.h:27,
                 from ./backends/vkeybd/virtual-keyboard.h:31,
                 from ./backends/vkeybd/virtual-keyboard-gui.h:29,
                 from backends/vkeybd/virtual-keyboard-gui.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/cursorman.h:26,
                 from backends/vkeybd/virtual-keyboard-gui.cpp:28:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/graphics/opengl/pipelines/clut8.o
In file included from ./graphics/opengl/context.h:25,
                 from ./backends/graphics/opengl/texture.h:26,
                 from ./backends/graphics/opengl/pipelines/pipeline.h:28,
                 from ./backends/graphics/opengl/pipelines/shader.h:25,
                 from ./backends/graphics/opengl/pipelines/clut8.h:25,
                 from backends/graphics/opengl/pipelines/clut8.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/vkeybd/virtual-keyboard.o
In file included from ./gui/gui-manager.h:26,
                 from backends/vkeybd/virtual-keyboard.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/graphics/opengl/pipelines/fixed.o
In file included from ./graphics/opengl/context.h:25,
                 from ./backends/graphics/opengl/texture.h:26,
                 from ./backends/graphics/opengl/pipelines/pipeline.h:28,
                 from ./backends/graphics/opengl/pipelines/fixed.h:25,
                 from backends/graphics/opengl/pipelines/fixed.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/graphics/opengl/pipelines/pipeline.o
In file included from ./graphics/opengl/context.h:25,
                 from ./backends/graphics/opengl/texture.h:26,
                 from ./backends/graphics/opengl/pipelines/pipeline.h:28,
                 from backends/graphics/opengl/pipelines/pipeline.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/graphics/opengl/texture.o
In file included from ./graphics/opengl/context.h:25,
                 from ./backends/graphics/opengl/texture.h:26,
                 from backends/graphics/opengl/texture.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/events/sdl/legacy-sdl-events.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./backends/graphics/graphics.h:25,
                 from ./backends/graphics/windowed.h:25,
                 from ./backends/graphics/sdl/sdl-graphics.h:25,
                 from ./backends/events/sdl/sdl-events.h:26,
                 from ./backends/events/sdl/legacy-sdl-events.h:25,
                 from backends/events/sdl/legacy-sdl-events.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/events/sdl/sdl-events.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./backends/graphics/graphics.h:25,
                 from ./backends/graphics/windowed.h:25,
                 from ./backends/graphics/sdl/sdl-graphics.h:25,
                 from ./backends/events/sdl/sdl-events.h:26,
                 from backends/events/sdl/sdl-events.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from backends/events/sdl/sdl-events.cpp:33:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/graphics/opengl/pipelines/shader.o
In file included from ./graphics/opengl/context.h:25,
                 from ./backends/graphics/opengl/texture.h:26,
                 from ./backends/graphics/opengl/pipelines/pipeline.h:28,
                 from ./backends/graphics/opengl/pipelines/shader.h:25,
                 from backends/graphics/opengl/pipelines/shader.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/vkeybd/virtual-keyboard-parser.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/formats/xmlparser.h:28,
                 from ./backends/vkeybd/virtual-keyboard-parser.h:29,
                 from backends/vkeybd/virtual-keyboard-parser.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./common/formats/xmlparser.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/mixer/null/null-mixer.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer_intern.h:26,
                 from ./backends/mixer/mixer.h:25,
                 from ./backends/mixer/null/null-mixer.h:25,
                 from backends/mixer/null/null-mixer.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/mixer/sdl/sdl-mixer.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer_intern.h:26,
                 from ./backends/mixer/mixer.h:25,
                 from ./backends/mixer/sdl/sdl-mixer.h:26,
                 from backends/mixer/sdl/sdl-mixer.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/mutex/sdl/sdl-mutex.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/mutex/sdl/sdl-mutex.h:25,
                 from backends/mutex/sdl/sdl-mutex.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/timer/sdl/sdl-timer.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/timer/default/default-timer.h:28,
                 from ./backends/timer/sdl/sdl-timer.h:25,
                 from backends/timer/sdl/sdl-timer.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/graphics/opengl/pipelines/libretro/parser.o
In file included from ./graphics/opengl/context.h:25,
                 from ./backends/graphics/opengl/texture.h:26,
                 from ./backends/graphics/opengl/pipelines/libretro/types.h:26,
                 from ./backends/graphics/opengl/pipelines/libretro/parser.h:28,
                 from backends/graphics/opengl/pipelines/libretro/parser.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/plugins/sdl/sdl-provider.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from ./backends/plugins/sdl/sdl-provider.h:25,
                 from backends/plugins/sdl/sdl-provider.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/audiocd/sdl/sdl-audiocd.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from ./backends/audiocd/audiocd.h:25,
                 from ./backends/audiocd/default/default-audiocd.h:25,
                 from ./backends/audiocd/sdl/sdl-audiocd.h:25,
                 from backends/audiocd/sdl/sdl-audiocd.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/graphics3d/opengl/framebuffer.o
In file included from ./graphics/opengl/context.h:25,
                 from backends/graphics3d/opengl/framebuffer.cpp:29:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/graphics/sdl/sdl-graphics.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./backends/graphics/graphics.h:25,
                 from ./backends/graphics/windowed.h:25,
                 from ./backends/graphics/sdl/sdl-graphics.h:25,
                 from backends/graphics/sdl/sdl-graphics.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/graphics3d/opengl/texture.o
In file included from ./graphics/opengl/context.h:25,
                 from backends/graphics3d/opengl/texture.cpp:28:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/graphics3d/opengl/surfacerenderer.o
In file included from ./graphics/opengl/context.h:25,
                 from backends/graphics3d/opengl/surfacerenderer.cpp:29:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/graphics/opengl/opengl-graphics.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./backends/graphics/graphics.h:25,
                 from ./backends/graphics/windowed.h:25,
                 from ./backends/graphics/opengl/opengl-graphics.h:26,
                 from backends/graphics/opengl/opengl-graphics.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/graphics/opengl/pipelines/libretro.o
In file included from ./graphics/opengl/context.h:25,
                 from ./backends/graphics/opengl/texture.h:26,
                 from ./backends/graphics/opengl/pipelines/pipeline.h:28,
                 from ./backends/graphics/opengl/pipelines/shader.h:25,
                 from ./backends/graphics/opengl/pipelines/libretro.h:28,
                 from backends/graphics/opengl/pipelines/libretro.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/graphics3d/opengl/tiledsurface.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./backends/graphics3d/opengl/tiledsurface.h:28,
                 from backends/graphics3d/opengl/tiledsurface.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/fs/posix/posix-iostream.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/fs/posix/posix-fs-factory.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./backends/fs/abstract-fs.h:27,
                 from ./backends/fs/fs-factory.h:26,
                 from ./backends/fs/posix/posix-fs-factory.h:25,
                 from backends/fs/posix/posix-fs-factory.cpp:33:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/fs/posix/posix-fs.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./backends/fs/abstract-fs.h:27,
                 from ./backends/fs/posix/posix-fs.h:25,
                 from backends/fs/posix/posix-fs.cpp:34:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/fs/posix-drives/posix-drives-fs-factory.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./backends/fs/abstract-fs.h:27,
                 from ./backends/fs/fs-factory.h:26,
                 from ./backends/fs/posix-drives/posix-drives-fs-factory.h:25,
                 from backends/fs/posix-drives/posix-drives-fs-factory.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/fs/posix-drives/posix-drives-fs.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./backends/fs/abstract-fs.h:27,
                 from ./backends/fs/posix/posix-fs.h:25,
                 from ./backends/fs/posix-drives/posix-drives-fs.h:25,
                 from backends/fs/posix-drives/posix-drives-fs.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/fs/chroot/chroot-fs.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./backends/fs/abstract-fs.h:27,
                 from ./backends/fs/posix/posix-fs.h:25,
                 from ./backends/fs/chroot/chroot-fs.h:25,
                 from backends/fs/chroot/chroot-fs.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/fs/chroot/chroot-fs-factory.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./backends/fs/abstract-fs.h:27,
                 from ./backends/fs/fs-factory.h:26,
                 from ./backends/fs/chroot/chroot-fs-factory.h:26,
                 from backends/fs/chroot/chroot-fs-factory.cpp:33:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/taskbar/unity/unity-taskbar.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/graphics/openglsdl/openglsdl-graphics.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./backends/graphics/graphics.h:25,
                 from ./backends/graphics/windowed.h:25,
                 from ./backends/graphics/opengl/opengl-graphics.h:26,
                 from ./backends/graphics/openglsdl/openglsdl-graphics.h:25,
                 from backends/graphics/openglsdl/openglsdl-graphics.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/plugins/posix/posix-provider.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from ./backends/plugins/posix/posix-provider.h:25,
                 from backends/plugins/posix/posix-provider.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/saves/posix/posix-saves.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./backends/saves/default/default-saves.h:28,
                 from ./backends/saves/posix/posix-saves.h:25,
                 from backends/saves/posix/posix-saves.cpp:33:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/graphics3d/openglsdl/openglsdl-graphics3d.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./backends/graphics/graphics.h:25,
                 from ./backends/graphics/windowed.h:25,
                 from ./backends/graphics/sdl/sdl-graphics.h:25,
                 from ./backends/graphics3d/openglsdl/openglsdl-graphics3d.h:25,
                 from backends/graphics3d/openglsdl/openglsdl-graphics3d.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/text-to-speech/linux/linux-text-to-speech.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/text-to-speech/linux/linux-text-to-speech.h:33,
                 from backends/text-to-speech/linux/linux-text-to-speech.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/audiocd/linux/linux-audiocd.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./backends/audiocd/audiocd-stream.h:47,
                 from backends/audiocd/linux/linux-audiocd.cpp:50:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/graphics/surfacesdl/surfacesdl-graphics.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./backends/graphics/graphics.h:25,
                 from ./backends/graphics/surfacesdl/surfacesdl-graphics.h:25,
                 from backends/graphics/surfacesdl/surfacesdl-graphics.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
backends/graphics/surfacesdl/surfacesdl-graphics.cpp: In constructor 'SurfaceSdlGraphicsManager::SurfaceSdlGraphicsManager(SdlEventSource*, SdlWindow*)':
backends/graphics/surfacesdl/surfacesdl-graphics.cpp:144:47: warning: 'void* calloc(size_t, size_t)' sizes specified with 'sizeof' in the earlier argument and not in the later argument [-Wcalloc-transposed-args]
  144 |         _currentPalette = (SDL_Color *)calloc(sizeof(SDL_Color), 256);
      |                                               ^~~~~~~~~~~~~~~~~
backends/graphics/surfacesdl/surfacesdl-graphics.cpp:144:47: note: earlier argument should specify number of elements, later size of each element
backends/graphics/surfacesdl/surfacesdl-graphics.cpp:145:47: warning: 'void* calloc(size_t, size_t)' sizes specified with 'sizeof' in the earlier argument and not in the later argument [-Wcalloc-transposed-args]
  145 |         _overlayPalette = (SDL_Color *)calloc(sizeof(SDL_Color), 256);
      |                                               ^~~~~~~~~~~~~~~~~
backends/graphics/surfacesdl/surfacesdl-graphics.cpp:145:47: note: earlier argument should specify number of elements, later size of each element
backends/graphics/surfacesdl/surfacesdl-graphics.cpp:146:46: warning: 'void* calloc(size_t, size_t)' sizes specified with 'sizeof' in the earlier argument and not in the later argument [-Wcalloc-transposed-args]
  146 |         _cursorPalette = (SDL_Color *)calloc(sizeof(SDL_Color), 256);
      |                                              ^~~~~~~~~~~~~~~~~
backends/graphics/surfacesdl/surfacesdl-graphics.cpp:146:46: note: earlier argument should specify number of elements, later size of each element
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      backends/dialogs/gtk/gtk-dialogs.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./backends/dialogs/gtk/gtk-dialogs.h:27,
                 from backends/dialogs/gtk/gtk-dialogs.cpp:30:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      video/dxa_decoder.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from video/dxa_decoder.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      video/3do_decoder.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./video/3do_decoder.h:25,
                 from video/3do_decoder.cpp:29:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      video/flic_decoder.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from ./video/video_decoder.h:25,
                 from ./video/flic_decoder.h:25,
                 from video/flic_decoder.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      video/hnm_decoder.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from video/hnm_decoder.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      video/mve_decoder.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from ./video/video_decoder.h:25,
                 from ./video/mve_decoder.h:26,
                 from video/mve_decoder.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      video/avi_decoder.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from video/avi_decoder.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      video/mpegps_decoder.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from video/mpegps_decoder.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      video/subtitles.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from video/subtitles.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      video/qt_decoder.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from ./video/video_decoder.h:25,
                 from ./video/qt_decoder.h:36,
                 from video/qt_decoder.cpp:30:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      video/paco_decoder.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from video/paco_decoder.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      video/psx_decoder.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from video/psx_decoder.cpp:30:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/gif.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      video/video_decoder.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from ./video/video_decoder.h:25,
                 from video/video_decoder.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/cel_3do.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from image/cel_3do.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      video/theora_decoder.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from ./video/video_decoder.h:25,
                 from ./video/theora_decoder.h:30,
                 from video/theora_decoder.cpp:36:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      video/coktel_decoder.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from video/coktel_decoder.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/bmp.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./common/substream.h:25,
                 from image/bmp.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      video/smk_decoder.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./video/smk_decoder.h:28,
                 from video/smk_decoder.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/neo.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/iff.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/pcx.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/scr.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/jpeg.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from image/jpeg.cpp:28:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/xbm.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/png.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from image/png.cpp:36:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/codecs/bmp_raw.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/codecs/codec.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./image/codecs/cinepak.h:26,
                 from image/codecs/codec.cpp:30:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/codecs/hlz.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/pict.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./image/pict.h:26,
                 from image/pict.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/tga.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      video/bink_decoder.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./common/substream.h:25,
                 from video/bink_decoder.cpp:33:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/codecs/cdtoons.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from image/codecs/cdtoons.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/codecs/jyv1.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from image/codecs/jyv1.cpp:29:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/codecs/mjpeg.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from image/codecs/mjpeg.cpp:28:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/codecs/msrle.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/codecs/indeo5.o
In file included from ./graphics/yuv_to_rgb.h:41,
                 from image/codecs/indeo5.cpp:30:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/codecs/msrle4.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from image/codecs/msrle4.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/codecs/indeo4.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from image/codecs/indeo4.cpp:29:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/codecs/indeo3.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from image/codecs/indeo3.cpp:30:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/codecs/msvideo1.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/codecs/rpza.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from image/codecs/rpza.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/codecs/cinepak.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./image/codecs/cinepak.h:26,
                 from image/codecs/cinepak.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/codecs/smc.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/codecs/truemotion1.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from image/codecs/truemotion1.cpp:32:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/codecs/indeo/mem.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/codecs/xan.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from image/codecs/xan.cpp:43:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/codecs/svq1.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from image/codecs/svq1.cpp:31:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/codecs/indeo/vlc.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/codecs/indeo/indeo_dsp.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/codecs/mpeg.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from image/codecs/mpeg.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/codecs/hnm.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from image/codecs/hnm.cpp:30:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/big5.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/big5.h:26,
                 from graphics/big5.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/blit/blit-alpha.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from graphics/blit/blit-alpha.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/codecs/indeo/indeo.o
In file included from ./graphics/yuv_to_rgb.h:41,
                 from image/codecs/indeo/indeo.cpp:29:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/cursorman.o
In file included from ./graphics/cursorman.h:26,
                 from graphics/cursorman.cpp:22:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
In file included from ./graphics/cursorman.h:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      image/codecs/qtrle.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from image/codecs/qtrle.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/blit/blit-generic.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/blit.h:26,
                 from ./graphics/blit/blit-alpha.h:22,
                 from graphics/blit/blit-generic.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/fonts/amigafont.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/font.h:27,
                 from ./graphics/fonts/amigafont.h:25,
                 from graphics/fonts/amigafont.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/fonts/dosfont.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/font.h:27,
                 from ./graphics/fonts/dosfont.h:25,
                 from graphics/fonts/dosfont.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/blit/blit.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/blit.h:26,
                 from graphics/blit/blit.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/fonts/consolefont.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./graphics/fonts/bdf.h:25,
                 from graphics/fonts/consolefont.cpp:2:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/fontman.o
In file included from ./graphics/fontman.h:26,
                 from graphics/fontman.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/fonts/freetype.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/fonts/newfont_big.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./graphics/fonts/bdf.h:25,
                 from graphics/fonts/newfont_big.cpp:2:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/font.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/font.h:27,
                 from graphics/font.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/fonts/newfont.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./graphics/fonts/bdf.h:25,
                 from graphics/fonts/newfont.cpp:2:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/blit/blit-scale.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/blit.h:26,
                 from graphics/blit/blit-scale.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/framelimiter.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./graphics/framelimiter.h:25,
                 from graphics/framelimiter.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/fonts/winfont.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from graphics/fonts/winfont.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/fonts/bdf.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./graphics/fonts/bdf.h:25,
                 from graphics/fonts/bdf.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/maccursor.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/macgui/macbutton.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from graphics/macgui/macbutton.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/macgui/macwindowmanager.h:28,
                 from graphics/macgui/macbutton.cpp:26:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/korfont.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/font.h:27,
                 from graphics/korfont.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/macgui/datafiles.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./graphics/macgui/macwindowmanager.h:27,
                 from graphics/macgui/datafiles.cpp:30:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/macgui/macwindowmanager.h:28:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/macgui/macdialog.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./common/events.h:27,
                 from graphics/macgui/macdialog.cpp:47:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/macgui/macwindowmanager.h:28,
                 from ./graphics/macgui/mactext-canvas.h:25,
                 from ./graphics/macgui/mactext.h:25,
                 from graphics/macgui/macdialog.cpp:54:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/larryScale.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/macgui/macpopupmenu.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./graphics/fonts/bdf.h:25,
                 from ./graphics/macgui/macfontmanager.h:26,
                 from ./graphics/macgui/macmenu.h:26,
                 from ./graphics/macgui/macpopupmenu.h:25,
                 from graphics/macgui/macpopupmenu.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/macgui/macwindowmanager.h:28,
                 from graphics/macgui/macpopupmenu.cpp:23:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/fonts/macfont.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from graphics/fonts/macfont.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/fonts/ttf.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/font.h:27,
                 from graphics/fonts/ttf.cpp:30:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/macgui/mactext-md.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./graphics/macgui/macwindowmanager.h:27,
                 from ./graphics/macgui/mactext-canvas.h:25,
                 from ./graphics/macgui/mactext.h:25,
                 from graphics/macgui/mactext-md.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/macgui/macwindowmanager.h:28:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/macgui/mactextwindow.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from graphics/macgui/mactextwindow.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/macgui/macwindowmanager.h:28,
                 from graphics/macgui/mactextwindow.cpp:25:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/macgui/macwidget.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from graphics/macgui/macwidget.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/macgui/macwindowmanager.h:28,
                 from graphics/macgui/macwidget.cpp:24:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/macgui/macwindow.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/font.h:27,
                 from graphics/macgui/macwindow.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/macgui/macwindowmanager.h:28,
                 from graphics/macgui/macwindow.cpp:26:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/macgui/macwindowborder.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from graphics/macgui/macwindowborder.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/macgui/macwindowmanager.h:28,
                 from graphics/macgui/macwindowborder.cpp:25:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/nine_patch.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/nine_patch.h:49,
                 from graphics/nine_patch.cpp:50:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/macgui/macwindowmanager.h:28,
                 from graphics/nine_patch.cpp:51:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/macgui/macfontmanager.o
In file included from ./common/archive.h:31,
                 from graphics/macgui/macfontmanager.cpp:21:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/macgui/macwindowmanager.h:28,
                 from graphics/macgui/macfontmanager.cpp:30:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/macgui/mactext-canvas.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./graphics/macgui/macwindowmanager.h:27,
                 from ./graphics/macgui/mactext-canvas.h:25,
                 from ./graphics/macgui/mactext.h:25,
                 from graphics/macgui/mactext-canvas.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/macgui/macwindowmanager.h:28:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/opengl/debug.o
In file included from ./graphics/opengl/context.h:25,
                 from ./graphics/opengl/debug.h:25,
                 from graphics/opengl/debug.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/pixelformat.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/palette.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/macgui/mactext.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from graphics/macgui/mactext.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/macgui/macwindowmanager.h:28,
                 from ./graphics/macgui/mactext-canvas.h:25,
                 from ./graphics/macgui/mactext.h:25,
                 from graphics/macgui/mactext.cpp:26:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/macgui/macmenu.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from graphics/macgui/macmenu.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from graphics/macgui/macmenu.cpp:23:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/renderer.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/translation.h:26,
                 from graphics/renderer.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/pm5544.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from graphics/pm5544.cpp:35:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/opengl/shader.o
In file included from ./common/config-manager.h:27,
                 from graphics/opengl/shader.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/scalerplugin.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from ./graphics/scalerplugin.h:24,
                 from graphics/scalerplugin.cpp:21:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/primitives.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/primitives.h:25,
                 from graphics/primitives.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/scaler/downscaler.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from graphics/scaler/downscaler.cpp:21:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/macgui/macwindowmanager.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from graphics/macgui/macwindowmanager.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/cursorman.h:26,
                 from graphics/macgui/macwindowmanager.cpp:26:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/screen.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from graphics/screen.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/scaler/thumbnail_intern.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from graphics/scaler/thumbnail_intern.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/scaler/normal.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from ./graphics/scalerplugin.h:24,
                 from ./graphics/scaler/normal.h:24,
                 from graphics/scaler/normal.cpp:21:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/transform_struct.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from graphics/transform_struct.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/managed_surface.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from graphics/managed_surface.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/transform_tools.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_tools.h:25,
                 from graphics/transform_tools.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/sjis.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from graphics/sjis.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/VectorRenderer.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/VectorRenderer.h:25,
                 from graphics/VectorRenderer.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/thumbnail.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from graphics/thumbnail.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/surface.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from graphics/surface.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/wincursor.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from graphics/wincursor.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/tinygl/arrays.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/tinygl/zbuffer.h:35,
                 from ./graphics/tinygl/zgl.h:40,
                 from graphics/tinygl/arrays.cpp:28:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/yuv_to_rgb.o
In file included from ./graphics/yuv_to_rgb.h:41,
                 from graphics/yuv_to_rgb.cpp:86:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/tinygl/clear.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/tinygl/zbuffer.h:35,
                 from ./graphics/tinygl/zgl.h:40,
                 from graphics/tinygl/clear.cpp:28:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/tinygl/api.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/tinygl/zbuffer.h:35,
                 from ./graphics/tinygl/zgl.h:40,
                 from graphics/tinygl/api.cpp:28:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/tinygl/fog.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/tinygl/zbuffer.h:35,
                 from ./graphics/tinygl/zgl.h:40,
                 from graphics/tinygl/fog.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/opengl/context.o
In file included from ./graphics/opengl/context.h:25,
                 from graphics/opengl/context.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/tinygl/clip.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/tinygl/zbuffer.h:35,
                 from ./graphics/tinygl/zgl.h:40,
                 from graphics/tinygl/clip.cpp:28:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/tinygl/light.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/tinygl/zbuffer.h:35,
                 from ./graphics/tinygl/zgl.h:40,
                 from graphics/tinygl/light.cpp:28:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/tinygl/get.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/tinygl/zbuffer.h:35,
                 from ./graphics/tinygl/zgl.h:40,
                 from graphics/tinygl/get.cpp:28:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/tinygl/init.o
In file included from graphics/tinygl/init.cpp:28:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/tinygl/matrix.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/tinygl/zbuffer.h:35,
                 from ./graphics/tinygl/zgl.h:40,
                 from graphics/tinygl/matrix.cpp:31:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/tinygl/memory.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/tinygl/zbuffer.h:35,
                 from ./graphics/tinygl/zgl.h:40,
                 from graphics/tinygl/memory.cpp:30:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/tinygl/list.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/tinygl/zbuffer.h:35,
                 from ./graphics/tinygl/zgl.h:40,
                 from graphics/tinygl/list.cpp:30:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/tinygl/pixelbuffer.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/tinygl/misc.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/tinygl/zbuffer.h:35,
                 from ./graphics/tinygl/zgl.h:40,
                 from graphics/tinygl/misc.cpp:28:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/tinygl/select.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/tinygl/zbuffer.h:35,
                 from ./graphics/tinygl/zgl.h:40,
                 from graphics/tinygl/select.cpp:28:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/svg.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/svg.h:24,
                 from graphics/svg.cpp:21:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/tinygl/specbuf.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/tinygl/zbuffer.h:35,
                 from ./graphics/tinygl/zgl.h:40,
                 from graphics/tinygl/specbuf.cpp:28:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/tinygl/texture.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/tinygl/zbuffer.h:35,
                 from ./graphics/tinygl/zgl.h:40,
                 from graphics/tinygl/texture.cpp:32:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/tinygl/vertex.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/tinygl/zbuffer.h:35,
                 from ./graphics/tinygl/zgl.h:40,
                 from graphics/tinygl/vertex.cpp:28:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/tinygl/zmath.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/tinygl/texelbuffer.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/tinygl/zbuffer.h:35,
                 from ./graphics/tinygl/zgl.h:40,
                 from graphics/tinygl/texelbuffer.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/tinygl/zbuffer.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/tinygl/zbuffer.h:35,
                 from graphics/tinygl/zbuffer.cpp:34:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/scaler/aspect.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/scaler/dotmatrix.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from ./graphics/scalerplugin.h:24,
                 from ./graphics/scaler/dotmatrix.h:24,
                 from graphics/scaler/dotmatrix.cpp:21:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/scaler/scale2x.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/scaler/scale3x.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/tinygl/zdirtyrect.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/tinygl/zdirtyrect.h:26,
                 from graphics/tinygl/zdirtyrect.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/scaler/pm.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from ./graphics/scalerplugin.h:24,
                 from ./graphics/scaler/pm.h:24,
                 from graphics/scaler/pm.cpp:21:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/scaler/scalebit.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from ./graphics/scalerplugin.h:24,
                 from ./graphics/scaler/scalebit.h:40,
                 from graphics/scaler/scalebit.cpp:41:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/tinygl/zline.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/tinygl/zbuffer.h:35,
                 from graphics/tinygl/zline.cpp:28:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/scaler/tv.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from ./graphics/scalerplugin.h:24,
                 from ./graphics/scaler/tv.h:24,
                 from graphics/scaler/tv.cpp:21:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/scaler/sai.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from ./graphics/scalerplugin.h:24,
                 from ./graphics/scaler/sai.h:24,
                 from graphics/scaler/sai.cpp:21:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/adlib.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from audio/adlib.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/adlib_ms.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mididrv_ms.h:25,
                 from ./audio/adlib_ms.h:25,
                 from audio/adlib_ms.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/blit/blit-avx2.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/blit.h:26,
                 from ./graphics/blit/blit-alpha.h:22,
                 from graphics/blit/blit-avx2.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/blit/blit-sse2.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/blit.h:26,
                 from ./graphics/blit/blit-alpha.h:22,
                 from graphics/blit/blit-sse2.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/cms.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from ./audio/cms.h:29,
                 from audio/cms.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/casio.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mididrv_ms.h:25,
                 from ./audio/casio.h:26,
                 from audio/casio.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/fmopl.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from audio/fmopl.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/audiostream.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from audio/audiostream.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/mididrv_ms.o
In file included from ./common/config-manager.h:27,
                 from audio/mididrv_ms.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/mididrv.o
In file included from ./common/config-manager.h:27,
                 from audio/mididrv.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/midiparser_smf.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/midiparser_qt.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from audio/midiparser_qt.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/midiparser_xmidi.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mididrv_ms.h:25,
                 from ./audio/mt32gm.h:26,
                 from ./audio/miles.h:26,
                 from audio/midiparser_xmidi.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/midiparser.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/midiplayer.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/midiplayer.h:26,
                 from audio/midiplayer.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/miles_midi.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mididrv_ms.h:25,
                 from ./audio/mt32gm.h:26,
                 from ./audio/miles.h:26,
                 from audio/miles_midi.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/miles_adlib.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mididrv_ms.h:25,
                 from ./audio/mt32gm.h:26,
                 from ./audio/miles.h:26,
                 from audio/miles_adlib.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/mixer.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./gui/EventRecorder.h:25,
                 from audio/mixer.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/mpu401.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from audio/mpu401.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/scaler/edge.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from graphics/scaler/edge.cpp:97:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/musicplugin.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from ./audio/musicplugin.h:25,
                 from audio/musicplugin.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/null.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/translation.h:26,
                 from audio/null.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/timestamp.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/rate.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from audio/rate.cpp:32:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/decoders/aac.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from audio/decoders/aac.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/mt32gm.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mididrv_ms.h:25,
                 from ./audio/mt32gm.h:26,
                 from audio/mt32gm.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/decoders/3do.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/decoders/apc.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/decoders/aiff.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from audio/decoders/aiff.cpp:29:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/decoders/g711.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/decoders/iff_sound.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/decoders/flac.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from audio/decoders/flac.cpp:29:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/decoders/asf.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/decoders/mac_snd.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./common/substream.h:25,
                 from audio/decoders/mac_snd.cpp:31:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/decoders/adpcm.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/decoders/mp3.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from audio/decoders/mp3.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/decoders/voc.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from audio/decoders/voc.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/decoders/quicktime.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from audio/decoders/quicktime.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/decoders/vorbis.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/decoders/wave.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from audio/decoders/wave.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/decoders/raw.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/decoders/xa.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/decoders/xan_dpcm.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/mods/impulsetracker.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/decoders/qdm2.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from audio/decoders/qdm2.cpp:35:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/mods/infogrames.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mods/paula.h:27,
                 from ./audio/mods/infogrames.h:31,
                 from audio/mods/infogrames.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/decoders/wma.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/mods/module.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/mods/maxtrax.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from audio/mods/maxtrax.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/mods/protracker.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mods/paula.h:27,
                 from ./audio/mods/protracker.h:35,
                 from audio/mods/protracker.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/mods/mod_xm_s3m.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from audio/mods/mod_xm_s3m.cpp:63:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/mods/paula.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/translation.h:26,
                 from audio/mods/paula.cpp:36:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/VectorRendererSpec.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from graphics/VectorRendererSpec.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/mods/rjp1.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from audio/mods/rjp1.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/mods/soundfx.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mods/paula.h:27,
                 from audio/mods/soundfx.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/opl/dosbox.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from audio/softsynth/opl/dosbox.cpp:34:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/cms.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from ./audio/cms.h:29,
                 from ./audio/softsynth/cms.h:25,
                 from audio/softsynth/cms.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/mods/module_mod_xm_s3m.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from audio/mods/module_mod_xm_s3m.cpp:63:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/fmtowns_pc98/pc98_audio.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from ./audio/softsynth/fmtowns_pc98/towns_pc98_fmsynth.h:26,
                 from audio/softsynth/fmtowns_pc98/pc98_audio.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/fmtowns_pc98/pcm_common.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from audio/softsynth/fmtowns_pc98/pcm_common.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/mods/tfmx.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from audio/mods/tfmx.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/opl/dbopl.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/opl/mame.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from audio/softsynth/opl/mame.cpp:37:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/fmtowns_pc98/sega_audio.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from ./audio/softsynth/fmtowns_pc98/towns_pc98_fmsynth.h:26,
                 from audio/softsynth/fmtowns_pc98/sega_audio.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/fmtowns_pc98/towns_pc98_plugins.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from ./audio/musicplugin.h:25,
                 from audio/softsynth/fmtowns_pc98/towns_pc98_plugins.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/fmtowns_pc98/towns_euphony.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/appleiigs.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/translation.h:26,
                 from audio/softsynth/appleiigs.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/fmtowns_pc98/towns_audio.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from ./audio/softsynth/fmtowns_pc98/towns_pc98_fmsynth.h:26,
                 from audio/softsynth/fmtowns_pc98/towns_audio.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/fmtowns_pc98/towns_pc98_fmsynth.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from ./audio/softsynth/fmtowns_pc98/towns_pc98_fmsynth.h:26,
                 from audio/softsynth/fmtowns_pc98/towns_pc98_fmsynth.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/eas.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/pcspk.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/softsynth/pcspk.h:26,
                 from audio/softsynth/pcspk.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/fmtowns_pc98/towns_pc98_driver.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/mt32.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from audio/softsynth/mt32.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/fluidsynth.o
audio/softsynth/fluidsynth.cpp:61:9: warning: "FS_API_VERSION" redefined
   61 | #define FS_API_VERSION ((FLUIDSYNTH_VERSION_MAJOR << 8) | FLUIDSYNTH_VERSION_MINOR)
      |         ^~~~~~~~~~~~~~
<command-line>: note: this is the location of the previous definition
In file included from ./common/config-manager.h:27,
                 from audio/softsynth/fluidsynth.cpp:41:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/wave6581.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/sid.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/translation.h:26,
                 from audio/softsynth/sid.cpp:29:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/soundfont/rawfile.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/soundfont/rifffile.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/tinygl/zblit.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/tinygl/zblit.h:25,
                 from graphics/tinygl/zblit.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/soundfont/vgminstrset.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/soundfont/vgmcoll.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from audio/soundfont/vgmcoll.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/soundfont/synthfile.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/soundfont/vgmsamp.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/soundfont/sf2file.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/soundfont/vab/psxspu.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from audio/soundfont/vab/psxspu.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/soundfont/vgmitem.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/decoders/ac3.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/soundfont/vab/vab.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from audio/soundfont/vab/vab.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/alsa_opl.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from audio/alsa_opl.cpp:35:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      math/angle.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      math/cosinetables.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      math/aabb.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/opl/nuked.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from audio/softsynth/opl/nuked.cpp:31:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      math/dct.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      math/fft.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      math/frustum.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      math/line3d.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      math/line2d.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      math/matrix3.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      math/glmath.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./math/glmath.h:25,
                 from math/glmath.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      math/matrix4.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      math/plane.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      math/mdct.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      math/rdft.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      math/ray.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      math/sinewindows.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      math/sinetables.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      math/rect2d.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      math/quat.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      math/vector2d.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      math/vector3d.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      math/vector4d.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/dbcs-str.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/concatstream.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/coroutines.o
In file included from ./common/coroutines.h:28,
                 from common/coroutines.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/error.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/translation.h:26,
                 from common/error.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/debug.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from common/debug.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/gui_options.o
In file included from ./common/config-manager.h:27,
                 from common/gui_options.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/archive.o
In file included from ./common/archive.h:31,
                 from common/archive.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/events.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./common/events.h:27,
                 from common/events.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/file.o
In file included from ./common/archive.h:31,
                 from common/file.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/hashmap.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/localization.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/translation.h:26,
                 from common/localization.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/language.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/memory.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/config-manager.o
In file included from ./common/config-manager.h:27,
                 from common/config-manager.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/md5.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/memorypool.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/mutex.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from common/mutex.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/osd_message_queue.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./common/events.h:27,
                 from ./common/osd_message_queue.h:25,
                 from common/osd_message_queue.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/fs.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from common/fs.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/platform.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/random.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from common/random.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/punycode.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from common/punycode.cpp:45:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/rendermode.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/translation.h:26,
                 from common/rendermode.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/rational.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from common/rational.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/path.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/streamdebug.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from common/streamdebug.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/macresman.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/crc.h:40,
                 from common/macresman.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/encodings/singlebyte.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/str.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from common/str.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/textconsole.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from common/textconsole.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/stream.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./common/substream.h:25,
                 from common/stream.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/str-enc.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from common/str-enc.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/text-to-speech.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from common/text-to-speech.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/system.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from common/system.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/tokenizer.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/unicode-bidi.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/xpfloat.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/util.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from common/util.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/ustr.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/zip-set.o
In file included from ./common/config-manager.h:27,
                 from common/zip-set.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/translation.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/translation.h:26,
                 from common/translation.cpp:29:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/str-base.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from common/str-base.cpp:28:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/compression/dcl.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from common/compression/dcl.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/compression/gentee_installer.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from common/compression/gentee_installer.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/compression/powerpacker.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from common/compression/powerpacker.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/compression/gzio.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from common/compression/gzio.cpp:37:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/compression/installshieldv3_archive.o
In file included from ./common/archive.h:31,
                 from ./common/compression/installshieldv3_archive.h:25,
                 from common/compression/installshieldv3_archive.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/compression/installshield_cab.o
In file included from ./common/archive.h:31,
                 from common/compression/installshield_cab.cpp:45:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/compression/rnc_deco.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/compression/clickteam.o
In file included from ./common/archive.h:31,
                 from ./common/compression/clickteam.h:25,
                 from common/compression/clickteam.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/compression/zlib.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from common/compression/zlib.cpp:39:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/compression/vise.o
In file included from ./common/archive.h:31,
                 from ./common/compression/vise.h:28,
                 from common/compression/vise.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/compression/unzip.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from common/compression/unzip.cpp:94:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/formats/formatinfo.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/translation.h:26,
                 from common/formats/formatinfo.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/formats/cue.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from common/formats/cue.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/compression/unarj.o
In file included from ./common/archive.h:31,
                 from common/compression/unarj.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/formats/iff_container.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./common/substream.h:25,
                 from common/formats/iff_container.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/compression/stuffit.o
In file included from ./common/archive.h:31,
                 from common/compression/stuffit.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/formats/ini-file.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from common/formats/ini-file.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/formats/prodos.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./common/formats/prodos.h:26,
                 from common/formats/prodos.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
common/formats/prodos.cpp: In constructor 'Common::ProDOSFile::ProDOSFile(char*, uint8, uint16, uint32, uint16, Common::File*)':
common/formats/prodos.cpp:34:16: warning: 'char* __builtin_strncpy(char*, const char*, long unsigned int)' specified bound 16 equals destination size [-Wstringop-truncation]
   34 |         strncpy(_name, name, 16);
      |                ^
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/formats/winexe.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from common/formats/winexe.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/formats/json.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/double_serialization.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/formats/quicktime.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from common/formats/quicktime.cpp:30:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/formats/markdown.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/formats/winexe_ne.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from common/formats/winexe_ne.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/formats/xmlparser.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/formats/xmlparser.h:28,
                 from common/formats/xmlparser.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./common/formats/xmlparser.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/lauxlib.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from common/lua/scummvm_file.h:26,
                 from common/lua/lauxlib.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/lbaselib.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/formats/winexe_pe.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from common/formats/winexe_pe.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/lapi.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/ldblib.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/lcode.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/lfunc.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/linit.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/ldebug.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/ldo.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/lmem.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/lgc.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/liolib.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from common/lua/scummvm_file.h:26,
                 from common/lua/liolib.cpp:21:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/lmathlib.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/loadlib.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/llex.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/lopcodes.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/lobject.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/loslib.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from common/lua/loslib.cpp:20:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/lstate.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/lstring.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/ltm.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/ltablib.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/lua_persist.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/lparser.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/lstrlib.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/ltable.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/lua_persistence_util.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/lzio.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/mt32/Analog.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/mt32/Display.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/mt32/File.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/lua_unpersist.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/mt32/LA32Ramp.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/scummvm_file.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from common/lua/scummvm_file.h:26,
                 from common/lua/scummvm_file.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/mt32/LA32FloatWaveGenerator.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      common/lua/lvm.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/mt32/BReverbModel.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/mt32/LA32WaveGenerator.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/mt32/MidiStreamParser.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/mt32/FileStream.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/mt32/Poly.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/mt32/PartialManager.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/mt32/Partial.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/mt32/ROMInfo.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/mt32/Tables.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/mt32/TVF.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/mt32/Part.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/mt32/TVA.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/mt32/sha1/sha1.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/mt32/srchelper/InternalResampler.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/mt32/TVP.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/mt32/srchelper/srctools/src/LinearResampler.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/mt32/srchelper/srctools/src/IIR2xResampler.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/mt32/srchelper/srctools/src/FIRResampler.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/mt32/srchelper/srctools/src/ResamplerModel.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/mt32/SampleRateConverter.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/mt32/srchelper/srctools/src/SincResampler.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/base-costume.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/actor.h:28,
                 from ./engines/scumm/base-costume.h:26,
                 from engines/scumm/base-costume.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/mt32/c_interface/c_interface.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/bomp.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from engines/scumm/bomp.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      audio/softsynth/mt32/Synth.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/cdda.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/camera.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from engines/scumm/camera.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/akos.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from engines/scumm/akos.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/charset-fontdata.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./engines/scumm/charset.h:26,
                 from engines/scumm/charset-fontdata.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/boxes.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from engines/scumm/boxes.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/cursor.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/scumm/cursor.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/cursorman.h:26,
                 from engines/scumm/cursor.cpp:25:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/costume.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from engines/scumm/costume.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/debugger.o
In file included from ./common/debug-channels.h:30,
                 from engines/scumm/debugger.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/actor.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/scumm/actor.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/charset.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/font.h:27,
                 from engines/scumm/charset.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/gfx_towns.o
In file included from ./common/config-manager.h:27,
                 from engines/scumm/gfx_towns.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/dialogs.o
In file included from ./common/config-manager.h:27,
                 from engines/scumm/dialogs.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from engines/scumm/dialogs.cpp:33:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/mixer_he.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./engines/scumm/he/sound_he.h:26,
                 from ./engines/scumm/he/mixer_he.h:25,
                 from engines/scumm/he/mixer_he.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/resource_he.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from engines/scumm/he/resource_he.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/cursorman.h:26,
                 from engines/scumm/he/resource_he.cpp:30:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/script_v60he.o
In file included from ./common/archive.h:31,
                 from engines/scumm/he/script_v60he.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/script_v70he.o
In file included from ./common/config-manager.h:27,
                 from engines/scumm/he/script_v70he.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/gfx_gui.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from engines/scumm/gfx_gui.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/cursorman.h:26,
                 from engines/scumm/gfx_gui.cpp:36:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/sound_he.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/actor.h:28,
                 from engines/scumm/he/sound_he.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/gfx.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/scumm/gfx.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/imuse/imuse_part.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from engines/scumm/imuse/imuse_part.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/imuse/imuse.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/scumm/imuse/imuse.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/imuse/sysex_samnmax.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./engines/scumm/imuse/imuse.h:28,
                 from ./engines/scumm/imuse/imuse_internal.h:27,
                 from engines/scumm/imuse/sysex_samnmax.cpp:35:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/imuse/instrument.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from engines/scumm/imuse/instrument.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/imuse/sysex_scumm.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./engines/scumm/imuse/imuse.h:28,
                 from ./engines/scumm/imuse/imuse_internal.h:27,
                 from engines/scumm/imuse/sysex_scumm.cpp:36:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/imuse/imuse_player.o
In file included from ./engines/engine.h:30,
                 from engines/scumm/imuse/imuse_player.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/help.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from engines/scumm/help.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/imuse/drivers/fmtowns.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from ./audio/softsynth/fmtowns_pc98/towns_pc98_fmsynth.h:26,
                 from engines/scumm/imuse/drivers/fmtowns.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/imuse/drivers/amiga.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mods/paula.h:27,
                 from ./engines/scumm/imuse/drivers/amiga.h:26,
                 from engines/scumm/imuse/drivers/amiga.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/ks_check.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/imuse/drivers/pcspk.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from ./audio/softsynth/emumidi.h:27,
                 from ./engines/scumm/imuse/drivers/pcspk.h:25,
                 from engines/scumm/imuse/drivers/pcspk.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/imuse/drivers/mac_m68k.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from ./audio/softsynth/emumidi.h:27,
                 from ./engines/scumm/imuse/drivers/mac_m68k.h:25,
                 from engines/scumm/imuse/drivers/mac_m68k.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/gfx_mac.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/scumm/gfx_mac.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/cursorman.h:26,
                 from engines/scumm/gfx_mac.cpp:28:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/midiparser_ro.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/imuse/drivers/midi.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from engines/scumm/imuse/drivers/midi.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/input.o
In file included from ./common/config-manager.h:27,
                 from engines/scumm/input.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/cursorman.h:26,
                 from engines/scumm/input.cpp:45:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/players/player_apple2.o
In file included from ./engines/engine.h:30,
                 from engines/scumm/players/player_apple2.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/players/player_ad.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./engines/scumm/players/player_ad.h:27,
                 from engines/scumm/players/player_ad.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/object.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/actor.h:28,
                 from engines/scumm/object.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/palette.o
In file included from ./common/config-manager.h:27,
                 from engines/scumm/palette.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/players/player_he.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from ./engines/scumm/players/player_he.h:26,
                 from engines/scumm/players/player_he.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/players/player_mod.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/players/player_mod.h:25,
                 from engines/scumm/players/player_mod.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/players/player_pce.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./engines/scumm/players/player_pce.h:26,
                 from engines/scumm/players/player_pce.cpp:30:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/players/player_mac.o
In file included from ./engines/engine.h:30,
                 from engines/scumm/players/player_mac.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/players/player_nes.o
In file included from ./engines/engine.h:30,
                 from engines/scumm/players/player_nes.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/metaengine.o
In file included from ./common/config-manager.h:27,
                 from engines/scumm/metaengine.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/players/player_v2base.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./engines/scumm/players/player_v2base.h:26,
                 from engines/scumm/players/player_v2base.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/players/player_sid.o
In file included from ./engines/engine.h:30,
                 from engines/scumm/players/player_sid.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/players/player_v2.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./engines/scumm/players/player_v2base.h:26,
                 from ./engines/scumm/players/player_v2.h:25,
                 from engines/scumm/players/player_v2.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/players/player_v1.o
In file included from ./engines/engine.h:30,
                 from engines/scumm/players/player_v1.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/players/player_towns.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from ./backends/audiocd/audiocd.h:25,
                 from ./engines/scumm/sound.h:29,
                 from engines/scumm/players/player_towns.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/players/player_v3m.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/macresman.h:28,
                 from engines/scumm/players/player_v3m.cpp:89:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/players/player_v4a.o
In file included from ./engines/engine.h:30,
                 from engines/scumm/players/player_v4a.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/players/player_v5m.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/macresman.h:28,
                 from engines/scumm/players/player_v5m.cpp:74:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/players/player_v3a.o
In file included from ./engines/engine.h:30,
                 from engines/scumm/players/player_v3a.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/players/player_v2cms.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./engines/scumm/players/player_v2base.h:26,
                 from ./engines/scumm/players/player_v2cms.h:25,
                 from engines/scumm/players/player_v2cms.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/scaler/hq.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./base/plugins.h:26,
                 from ./graphics/scalerplugin.h:24,
                 from ./graphics/scaler/hq.h:24,
                 from graphics/scaler/hq.cpp:21:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/resource_v2.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/scumm/file.h:25,
                 from engines/scumm/resource_v2.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/resource_v3.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/scumm_v5.h:25,
                 from ./engines/scumm/scumm_v4.h:25,
                 from ./engines/scumm/scumm_v3.h:25,
                 from engines/scumm/resource_v3.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/resource_v4.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/scumm_v5.h:25,
                 from ./engines/scumm/scumm_v4.h:25,
                 from engines/scumm/resource_v4.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/room.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/scumm/room.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/players/player_v2a.o
In file included from ./engines/engine.h:30,
                 from engines/scumm/players/player_v2a.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/script_v3.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/scumm_v5.h:25,
                 from ./engines/scumm/scumm_v4.h:25,
                 from ./engines/scumm/scumm_v3.h:25,
                 from engines/scumm/script_v3.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/resource.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/macresman.h:28,
                 from engines/scumm/resource.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/script_v4.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/scumm_v5.h:25,
                 from ./engines/scumm/scumm_v4.h:25,
                 from engines/scumm/script_v4.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/script_v0.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/actor.h:28,
                 from engines/scumm/script_v0.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/script_v2.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/actor.h:28,
                 from engines/scumm/script_v2.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/script.o
In file included from ./common/config-manager.h:27,
                 from engines/scumm/script.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/saveload.o
In file included from ./common/config-manager.h:27,
                 from engines/scumm/saveload.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
engines/scumm/saveload.cpp: In member function 'void Scumm::ScummEngine::loadResourceOLD(Common::Serializer&, Scumm::ResType, Scumm::ResId)':
engines/scumm/saveload.cpp:2299:24: warning: 'tmp' may be used uninitialized [-Wmaybe-uninitialized]
 2299 |                 uint16 tmp;
      |                        ^~~
engines/scumm/saveload.cpp:2295:16: warning: 'size' may be used uninitialized [-Wmaybe-uninitialized]
 2295 |         uint32 size;
      |                ^~~~
engines/scumm/saveload.cpp: In member function 'void Scumm::ScummEngine::loadResource(Common::Serializer&, Scumm::ResType, Scumm::ResId)':
engines/scumm/saveload.cpp:2347:24: warning: 'size' may be used uninitialized [-Wmaybe-uninitialized]
 2347 |                 uint32 size;
      |                        ^~~~
engines/scumm/saveload.cpp:2359:24: warning: 'size' may be used uninitialized [-Wmaybe-uninitialized]
 2359 |                 uint32 size;
      |                        ^~~~
engines/scumm/saveload.cpp: In member function 'virtual void Scumm::ScummEngine::saveLoadWithSerializer(Common::Serializer&)':
engines/scumm/saveload.cpp:1778:32: warning: 'tmp' may be used uninitialized [-Wmaybe-uninitialized]
 1778 |                         uint16 tmp;
      |                                ^~~
engines/scumm/saveload.cpp:1756:15: warning: 'idx' may be used uninitialized [-Wmaybe-uninitialized]
 1756 |         ResId idx;
      |               ^~~
engines/scumm/saveload.cpp:2004:23: warning: 'tmp' may be used uninitialized [-Wmaybe-uninitialized]
 2004 |                 uint8 tmp;
      |                       ^~~
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/util.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/usage_bits.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from engines/scumm/usage_bits.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/script_v6.o
In file included from ./common/config-manager.h:27,
                 from engines/scumm/script_v6.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/sound.o
In file included from ./common/config-manager.h:27,
                 from engines/scumm/sound.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/script_v5.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/actor.h:28,
                 from engines/scumm/script_v5.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/vars.o
In file included from ./common/config-manager.h:27,
                 from engines/scumm/vars.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/nut_renderer.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from engines/scumm/nut_renderer.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/verbs.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/actor.h:28,
                 from engines/scumm/verbs.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/imuse_digi/dimuse_bndmgr.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from engines/scumm/imuse_digi/dimuse_bndmgr.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/string_v7.o
In file included from ./common/config-manager.h:27,
                 from engines/scumm/string_v7.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/imuse_digi/dimuse_codecs.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/imuse_digi/dimuse_tables.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/string.o
In file included from ./common/config-manager.h:27,
                 from engines/scumm/string.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
engines/scumm/string.cpp: In member function 'virtual void Scumm::ScummEngine::fakeBidiString(byte*, bool, int) const':
engines/scumm/string.cpp:645:44: warning: 'void* calloc(size_t, size_t)' sizes specified with 'sizeof' in the earlier argument and not in the later argument [-Wcalloc-transposed-args]
  645 |         byte * const buff = (byte *)calloc(sizeof(byte), bufferSize);
      |                                            ^~~~~~~~~~~~
engines/scumm/string.cpp:645:44: note: earlier argument should specify number of elements, later size of each element
engines/scumm/string.cpp:647:45: warning: 'void* calloc(size_t, size_t)' sizes specified with 'sizeof' in the earlier argument and not in the later argument [-Wcalloc-transposed-args]
  647 |         byte * const stack = (byte *)calloc(sizeof(byte), bufferSize);
      |                                             ^~~~~~~~~~~~
engines/scumm/string.cpp:647:45: note: earlier argument should specify number of elements, later size of each element
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/imuse_digi/dimuse_sndmgr.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/resource.h:26,
                 from engines/scumm/imuse_digi/dimuse_sndmgr.cpp:31:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/script_v8.o
In file included from ./common/config-manager.h:27,
                 from engines/scumm/script_v8.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/imuse_digi/dimuse_cmds.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./engines/scumm/imuse_digi/dimuse_engine.h:26,
                 from engines/scumm/imuse_digi/dimuse_cmds.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/imuse_digi/dimuse_fades.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./engines/scumm/imuse_digi/dimuse_engine.h:26,
                 from engines/scumm/imuse_digi/dimuse_fades.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/imuse_digi/dimuse_groups.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./engines/scumm/imuse_digi/dimuse_engine.h:26,
                 from engines/scumm/imuse_digi/dimuse_groups.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/imuse_digi/dimuse_files.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./engines/scumm/imuse_digi/dimuse_engine.h:26,
                 from engines/scumm/imuse_digi/dimuse_files.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/scumm.o
In file included from ./common/config-manager.h:27,
                 from engines/scumm/scumm.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/cursorman.h:26,
                 from engines/scumm/scumm.cpp:38:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/imuse_digi/dimuse_engine.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/scumm/imuse_digi/dimuse_engine.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/imuse_digi/dimuse_utils.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./engines/scumm/imuse_digi/dimuse_engine.h:26,
                 from engines/scumm/imuse_digi/dimuse_utils.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/imuse_digi/dimuse_streamer.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./engines/scumm/imuse_digi/dimuse_engine.h:26,
                 from engines/scumm/imuse_digi/dimuse_streamer.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/imuse_digi/dimuse_scripts.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./engines/scumm/imuse_digi/dimuse_engine.h:26,
                 from engines/scumm/imuse_digi/dimuse_scripts.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/imuse_digi/dimuse_dispatch.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./engines/scumm/imuse_digi/dimuse_engine.h:26,
                 from engines/scumm/imuse_digi/dimuse_dispatch.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/imuse_digi/dimuse_tracks.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./engines/scumm/imuse_digi/dimuse_engine.h:26,
                 from engines/scumm/imuse_digi/dimuse_tracks.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/imuse_digi/dimuse_wave.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./engines/scumm/imuse_digi/dimuse_engine.h:26,
                 from engines/scumm/imuse_digi/dimuse_wave.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/imuse_digi/dimuse_waveout.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./engines/scumm/imuse_digi/dimuse_engine.h:26,
                 from engines/scumm/imuse_digi/dimuse_waveout.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/imuse_digi/dimuse_triggers.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./engines/scumm/imuse_digi/dimuse_engine.h:26,
                 from engines/scumm/imuse_digi/dimuse_triggers.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/imuse_digi/dimuse_internalmixer.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from engines/scumm/imuse_digi/dimuse_internalmixer.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/smush/codec1.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/smush/codec20.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/insane/insane_ben.o
In file included from ./engines/engine.h:30,
                 from engines/scumm/insane/insane_ben.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/insane/insane_iact.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/scumm_v6.h:25,
                 from ./engines/scumm/scumm_v7.h:27,
                 from engines/scumm/insane/insane_iact.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/smush/codec37.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/insane/insane.o
In file included from ./engines/engine.h:30,
                 from engines/scumm/insane/insane.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/smush/codec47.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/insane/insane_scenes.o
In file included from ./engines/engine.h:30,
                 from engines/scumm/insane/insane_scenes.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/animation_he.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/scumm_v6.h:25,
                 from ./engines/scumm/he/intern_he.h:25,
                 from engines/scumm/he/animation_he.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/insane/insane_enemy.o
In file included from ./engines/engine.h:30,
                 from engines/scumm/insane/insane_enemy.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/logic_he.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/scumm_v6.h:25,
                 from ./engines/scumm/he/intern_he.h:25,
                 from engines/scumm/he/logic_he.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/floodfill_he.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./engines/scumm/he/floodfill_he.h:25,
                 from engines/scumm/he/floodfill_he.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/cup_player_he.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/scumm/he/cup_player_he.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/palette_he.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/scumm/he/palette_he.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/script_v71he.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/actor.h:28,
                 from engines/scumm/he/script_v71he.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/script_v80he.o
In file included from ./common/archive.h:31,
                 from engines/scumm/he/script_v80he.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/smush/smush_player.o
In file included from ./common/config-manager.h:27,
                 from engines/scumm/smush/smush_player.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/cursorman.h:26,
                 from engines/scumm/smush/smush_player.cpp:30:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/script_v90he.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/actor.h:28,
                 from engines/scumm/he/script_v90he.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/logic/baseball2001.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/scumm_v6.h:25,
                 from ./engines/scumm/he/intern_he.h:25,
                 from engines/scumm/he/logic/baseball2001.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/localizer.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from engines/scumm/he/localizer.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/script_v72he.o
In file included from ./common/config-manager.h:27,
                 from engines/scumm/he/script_v72he.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/logic/basketball.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/scumm_v6.h:25,
                 from ./engines/scumm/he/intern_he.h:25,
                 from engines/scumm/he/logic/basketball.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/sprite_he.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/scumm_v6.h:25,
                 from ./engines/scumm/he/intern_he.h:25,
                 from engines/scumm/he/sprite_he.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/logic/funshop.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/scumm_v6.h:25,
                 from ./engines/scumm/he/intern_he.h:25,
                 from engines/scumm/he/logic/funshop.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/logic/moonbase_logic.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/scumm_v6.h:25,
                 from ./engines/scumm/he/intern_he.h:25,
                 from engines/scumm/he/logic/moonbase_logic.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/logic/football.o
In file included from ./common/config-manager.h:27,
                 from engines/scumm/he/logic/football.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/logic/puttrace.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/scumm_v6.h:25,
                 from ./engines/scumm/he/intern_he.h:25,
                 from engines/scumm/he/logic/puttrace.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/moonbase/ai_node.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/moonbase/ai_defenseunit.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from engines/scumm/he/moonbase/ai_defenseunit.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/moonbase/ai_traveller.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/scumm_v6.h:25,
                 from ./engines/scumm/he/intern_he.h:25,
                 from engines/scumm/he/moonbase/ai_traveller.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/wiz_he.o
In file included from ./common/archive.h:31,
                 from engines/scumm/he/wiz_he.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/cursorman.h:26,
                 from engines/scumm/he/wiz_he.cpp:26:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/logic/soccer.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/scumm_v6.h:25,
                 from ./engines/scumm/he/intern_he.h:25,
                 from engines/scumm/he/logic/soccer.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/script_v100he.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/scumm/he/script_v100he.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/moonbase/ai_targetacquisition.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/scumm_v6.h:25,
                 from ./engines/scumm/he/intern_he.h:25,
                 from engines/scumm/he/moonbase/ai_targetacquisition.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/moonbase/ai_weapon.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/moonbase/ai_types.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from engines/scumm/he/moonbase/ai_types.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/moonbase/ai_tree.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/scumm_v6.h:25,
                 from ./engines/scumm/he/intern_he.h:25,
                 from engines/scumm/he/moonbase/ai_tree.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/moonbase/moonbase.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/scumm_v6.h:25,
                 from ./engines/scumm/he/intern_he.h:25,
                 from engines/scumm/he/moonbase/moonbase.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/moonbase/distortion.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/scumm_v6.h:25,
                 from ./engines/scumm/he/intern_he.h:25,
                 from engines/scumm/he/moonbase/distortion.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/dialog-createsession.o
In file included from ./common/config-manager.h:27,
                 from engines/scumm/dialog-createsession.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/moonbase/moonbase_fow.o
In file included from ./common/config-manager.h:27,
                 from engines/scumm/he/moonbase/moonbase_fow.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/dialog-sessionselector.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from engines/scumm/dialog-sessionselector.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/scumm/dialog-sessionselector.h:30,
                 from engines/scumm/dialog-sessionselector.cpp:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/moonbase/ai_main.o
In file included from ./engines/engine.h:30,
                 from ./engines/scumm/scumm.h:25,
                 from ./engines/scumm/scumm_v6.h:25,
                 from ./engines/scumm/he/intern_he.h:25,
                 from engines/scumm/he/moonbase/ai_main.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/animation.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/access/access.h:26,
                 from engines/access/animation.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/access/events.h:27,
                 from ./engines/access/access.h:41:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/asurface.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/access/access.h:26,
                 from engines/access/asurface.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/access/events.h:27,
                 from ./engines/access/access.h:41:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/bubble_box.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./engines/access/bubble_box.h:27,
                 from engines/access/bubble_box.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/access/events.h:27,
                 from ./engines/access/access.h:41,
                 from engines/access/bubble_box.cpp:24:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/data.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/access/data.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/char.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/access/access.h:26,
                 from engines/access/char.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/access/events.h:27,
                 from ./engines/access/access.h:41:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/decompress.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from engines/access/decompress.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/access.o
In file included from ./common/config-manager.h:27,
                 from engines/access/access.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/access/events.h:27,
                 from ./engines/access/access.h:41,
                 from engines/access/access.cpp:29:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/debugger.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from engines/access/debugger.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/access/events.h:27,
                 from ./engines/access/access.h:41,
                 from engines/access/debugger.cpp:23:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/events.o
In file included from ./graphics/cursorman.h:26,
                 from engines/access/events.cpp:23:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
In file included from ./graphics/cursorman.h:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/net/net_lobby.o
In file included from ./common/config-manager.h:27,
                 from engines/scumm/he/net/net_lobby.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/files.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./common/substream.h:25,
                 from engines/access/files.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/access/events.h:27,
                 from ./engines/access/access.h:41,
                 from engines/access/files.cpp:26:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/scumm/he/net/net_main.o
In file included from ./common/config-manager.h:27,
                 from engines/scumm/he/net/net_main.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/font.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./engines/access/font.h:27,
                 from engines/access/font.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/metaengine.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/access/metaengine.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/access/events.h:27,
                 from ./engines/access/access.h:41,
                 from engines/access/metaengine.cpp:30:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/player.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./engines/access/player.h:26,
                 from engines/access/player.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/access/events.h:27,
                 from ./engines/access/access.h:41,
                 from engines/access/player.cpp:25:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/resources.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./engines/access/resources.h:28,
                 from engines/access/resources.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/access/events.h:27,
                 from ./engines/access/access.h:41,
                 from engines/access/resources.cpp:23:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/screen.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from engines/access/screen.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/access/events.h:27,
                 from ./engines/access/access.h:41,
                 from engines/access/screen.cpp:28:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/inventory.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./engines/access/inventory.h:27,
                 from engines/access/inventory.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/access/events.h:27,
                 from ./engines/access/access.h:41,
                 from engines/access/inventory.cpp:23:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/room.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/access/access.h:26,
                 from engines/access/room.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/access/events.h:27,
                 from ./engines/access/access.h:41:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/video.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./engines/access/data.h:27,
                 from ./engines/access/video.h:27,
                 from engines/access/video.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/access/events.h:27,
                 from ./engines/access/access.h:41,
                 from engines/access/video.cpp:23:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/sound.o
In file included from ./common/config-manager.h:27,
                 from engines/access/sound.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/access/events.h:27,
                 from ./engines/access/access.h:41,
                 from engines/access/sound.cpp:31:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/video/movie_decoder.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/access/access.h:26,
                 from engines/access/video/movie_decoder.cpp:29:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/access/events.h:27,
                 from ./engines/access/access.h:41:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/scripts.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/access/access.h:26,
                 from engines/access/scripts.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/access/events.h:27,
                 from ./engines/access/access.h:41:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/amazon/amazon_player.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/access/access.h:26,
                 from engines/access/amazon/amazon_player.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/access/events.h:27,
                 from ./engines/access/access.h:41:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/amazon/amazon_room.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/access/access.h:26,
                 from engines/access/amazon/amazon_room.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/access/events.h:27,
                 from ./engines/access/access.h:41:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/amazon/amazon_resources.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./engines/access/resources.h:28,
                 from ./engines/access/amazon/amazon_resources.h:27,
                 from engines/access/amazon/amazon_resources.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/access/events.h:27,
                 from ./engines/access/access.h:41,
                 from engines/access/amazon/amazon_resources.cpp:23:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/amazon/amazon_game.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./engines/access/resources.h:28,
                 from engines/access/amazon/amazon_game.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/access/events.h:27,
                 from ./engines/access/access.h:41,
                 from ./engines/access/amazon/amazon_game.h:25,
                 from engines/access/amazon/amazon_game.cpp:23:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/martian/martian_player.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/access/access.h:26,
                 from engines/access/martian/martian_player.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/access/events.h:27,
                 from ./engines/access/access.h:41:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/amazon/amazon_scripts.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/access/access.h:26,
                 from engines/access/amazon/amazon_scripts.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/access/events.h:27,
                 from ./engines/access/access.h:41:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/martian/martian_resources.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./engines/access/resources.h:28,
                 from ./engines/access/martian/martian_resources.h:26,
                 from engines/access/martian/martian_resources.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/access/events.h:27,
                 from ./engines/access/access.h:41,
                 from engines/access/martian/martian_resources.cpp:23:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/amazon/amazon_logic.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/access/access.h:26,
                 from engines/access/amazon/amazon_logic.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/access/events.h:27,
                 from ./engines/access/access.h:41:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/martian/martian_room.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/access/access.h:26,
                 from engines/access/martian/martian_room.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/access/events.h:27,
                 from ./engines/access/access.h:41:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/martian/martian_game.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./engines/access/resources.h:28,
                 from engines/access/martian/martian_game.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/access/events.h:27,
                 from ./engines/access/access.h:41,
                 from ./engines/access/martian/martian_game.h:25,
                 from engines/access/martian/martian_game.cpp:23:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/access/martian/martian_scripts.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/access/access.h:26,
                 from engines/access/martian/martian_scripts.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/access/events.h:27,
                 from ./engines/access/access.h:41:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/adl/adl_v3.o
In file included from ./common/debug-channels.h:30,
                 from ./engines/adl/adl.h:25,
                 from ./engines/adl/adl_v2.h:25,
                 from ./engines/adl/adl_v3.h:25,
                 from engines/adl/adl_v3.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/adl/display.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from engines/adl/display.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/adl/adl_v5.o
In file included from ./common/debug-channels.h:30,
                 from ./engines/adl/adl.h:25,
                 from ./engines/adl/adl_v2.h:25,
                 from ./engines/adl/adl_v3.h:25,
                 from ./engines/adl/adl_v4.h:25,
                 from ./engines/adl/adl_v5.h:25,
                 from engines/adl/adl_v5.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from engines/adl/adl_v5.cpp:27:
./engines/adl/graphics.h:52:27: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   52 |         GraphicsMan_v1<T>(T &display) : _display(display) { this->setBounds(Common::Rect(280, 160)); }
      |                           ^
./engines/adl/graphics.h:52:27: note: remove the '< >'
./engines/adl/graphics.h:72:27: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   72 |         GraphicsMan_v2<T>(T &display) : GraphicsMan_v1<T>(display), _color(0) { }
      |                           ^
./engines/adl/graphics.h:72:27: note: remove the '< >'
./engines/adl/graphics.h:99:27: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   99 |         GraphicsMan_v3<T>(T &display) : GraphicsMan_v2<T>(display) { }
      |                           ^
./engines/adl/graphics.h:99:27: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/adl/console.o
In file included from ./common/debug-channels.h:30,
                 from engines/adl/console.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from engines/adl/console.cpp:26:
./engines/adl/graphics.h:52:27: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   52 |         GraphicsMan_v1<T>(T &display) : _display(display) { this->setBounds(Common::Rect(280, 160)); }
      |                           ^
./engines/adl/graphics.h:52:27: note: remove the '< >'
./engines/adl/graphics.h:72:27: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   72 |         GraphicsMan_v2<T>(T &display) : GraphicsMan_v1<T>(display), _color(0) { }
      |                           ^
./engines/adl/graphics.h:72:27: note: remove the '< >'
./engines/adl/graphics.h:99:27: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   99 |         GraphicsMan_v3<T>(T &display) : GraphicsMan_v2<T>(display) { }
      |                           ^
./engines/adl/graphics.h:99:27: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/adl/hires2.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/adl/hires2.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from engines/adl/hires2.cpp:30:
./engines/adl/graphics.h:52:27: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   52 |         GraphicsMan_v1<T>(T &display) : _display(display) { this->setBounds(Common::Rect(280, 160)); }
      |                           ^
./engines/adl/graphics.h:52:27: note: remove the '< >'
./engines/adl/graphics.h:72:27: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   72 |         GraphicsMan_v2<T>(T &display) : GraphicsMan_v1<T>(display), _color(0) { }
      |                           ^
./engines/adl/graphics.h:72:27: note: remove the '< >'
./engines/adl/graphics.h:99:27: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   99 |         GraphicsMan_v3<T>(T &display) : GraphicsMan_v2<T>(display) { }
      |                           ^
./engines/adl/graphics.h:99:27: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/adl/adl_v4.o
In file included from ./common/debug-channels.h:30,
                 from ./engines/adl/adl.h:25,
                 from ./engines/adl/adl_v2.h:25,
                 from ./engines/adl/adl_v3.h:25,
                 from ./engines/adl/adl_v4.h:25,
                 from engines/adl/adl_v4.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/adl/adl_v2.o
In file included from ./common/debug-channels.h:30,
                 from ./engines/adl/adl.h:25,
                 from ./engines/adl/adl_v2.h:25,
                 from engines/adl/adl_v2.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from engines/adl/adl_v2.cpp:27:
./engines/adl/graphics.h:52:27: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   52 |         GraphicsMan_v1<T>(T &display) : _display(display) { this->setBounds(Common::Rect(280, 160)); }
      |                           ^
./engines/adl/graphics.h:52:27: note: remove the '< >'
./engines/adl/graphics.h:72:27: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   72 |         GraphicsMan_v2<T>(T &display) : GraphicsMan_v1<T>(display), _color(0) { }
      |                           ^
./engines/adl/graphics.h:72:27: note: remove the '< >'
./engines/adl/graphics.h:99:27: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   99 |         GraphicsMan_v3<T>(T &display) : GraphicsMan_v2<T>(display) { }
      |                           ^
./engines/adl/graphics.h:99:27: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/adl/hires1.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/adl/hires1.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from engines/adl/hires1.cpp:31:
./engines/adl/graphics.h:52:27: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   52 |         GraphicsMan_v1<T>(T &display) : _display(display) { this->setBounds(Common::Rect(280, 160)); }
      |                           ^
./engines/adl/graphics.h:52:27: note: remove the '< >'
./engines/adl/graphics.h:72:27: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   72 |         GraphicsMan_v2<T>(T &display) : GraphicsMan_v1<T>(display), _color(0) { }
      |                           ^
./engines/adl/graphics.h:72:27: note: remove the '< >'
./engines/adl/graphics.h:99:27: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   99 |         GraphicsMan_v3<T>(T &display) : GraphicsMan_v2<T>(display) { }
      |                           ^
./engines/adl/graphics.h:99:27: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/adl/sound.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/adl/sound.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/adl/metaengine.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./engines/advancedDetector.h:25,
                 from engines/adl/metaengine.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/adl/hires4.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/adl/hires4.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from engines/adl/hires4.cpp:33:
./engines/adl/graphics.h:52:27: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   52 |         GraphicsMan_v1<T>(T &display) : _display(display) { this->setBounds(Common::Rect(280, 160)); }
      |                           ^
./engines/adl/graphics.h:52:27: note: remove the '< >'
./engines/adl/graphics.h:72:27: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   72 |         GraphicsMan_v2<T>(T &display) : GraphicsMan_v1<T>(display), _color(0) { }
      |                           ^
./engines/adl/graphics.h:72:27: note: remove the '< >'
./engines/adl/graphics.h:99:27: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   99 |         GraphicsMan_v3<T>(T &display) : GraphicsMan_v2<T>(display) { }
      |                           ^
./engines/adl/graphics.h:99:27: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/adl/hires5.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/adl/hires5.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from engines/adl/hires5.cpp:31:
./engines/adl/graphics.h:52:27: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   52 |         GraphicsMan_v1<T>(T &display) : _display(display) { this->setBounds(Common::Rect(280, 160)); }
      |                           ^
./engines/adl/graphics.h:52:27: note: remove the '< >'
./engines/adl/graphics.h:72:27: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   72 |         GraphicsMan_v2<T>(T &display) : GraphicsMan_v1<T>(display), _color(0) { }
      |                           ^
./engines/adl/graphics.h:72:27: note: remove the '< >'
./engines/adl/graphics.h:99:27: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   99 |         GraphicsMan_v3<T>(T &display) : GraphicsMan_v2<T>(display) { }
      |                           ^
./engines/adl/graphics.h:99:27: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/adl/hires6.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/adl/hires6.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from engines/adl/hires6.cpp:31:
./engines/adl/graphics.h:52:27: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   52 |         GraphicsMan_v1<T>(T &display) : _display(display) { this->setBounds(Common::Rect(280, 160)); }
      |                           ^
./engines/adl/graphics.h:52:27: note: remove the '< >'
./engines/adl/graphics.h:72:27: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   72 |         GraphicsMan_v2<T>(T &display) : GraphicsMan_v1<T>(display), _color(0) { }
      |                           ^
./engines/adl/graphics.h:72:27: note: remove the '< >'
./engines/adl/graphics.h:99:27: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   99 |         GraphicsMan_v3<T>(T &display) : GraphicsMan_v2<T>(display) { }
      |                           ^
./engines/adl/graphics.h:99:27: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/adl/adl.o
In file included from ./common/config-manager.h:27,
                 from engines/adl/adl.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from engines/adl/adl.cpp:40:
./engines/adl/graphics.h:52:27: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   52 |         GraphicsMan_v1<T>(T &display) : _display(display) { this->setBounds(Common::Rect(280, 160)); }
      |                           ^
./engines/adl/graphics.h:52:27: note: remove the '< >'
./engines/adl/graphics.h:72:27: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   72 |         GraphicsMan_v2<T>(T &display) : GraphicsMan_v1<T>(display), _color(0) { }
      |                           ^
./engines/adl/graphics.h:72:27: note: remove the '< >'
./engines/adl/graphics.h:99:27: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   99 |         GraphicsMan_v3<T>(T &display) : GraphicsMan_v2<T>(display) { }
      |                           ^
./engines/adl/graphics.h:99:27: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/checks.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/agi/agi.h:28,
                 from engines/agi/checks.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/cycle.o
In file included from ./common/config-manager.h:27,
                 from engines/agi/cycle.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32,
                 from engines/agi/cycle.cpp:24:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/agi.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from engines/agi/agi.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/cursorman.h:26,
                 from engines/agi/agi.cpp:36:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/console.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/agi/agi.h:28,
                 from engines/agi/console.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/font.o
In file included from ./common/config-manager.h:27,
                 from engines/agi/font.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/gui-manager.h:27,
                 from engines/agi/font.cpp:24:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/global.o
In file included from ./common/config-manager.h:27,
                 from engines/agi/global.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32,
                 from engines/agi/global.cpp:25:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/inv.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/agi/agi.h:28,
                 from engines/agi/inv.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/keyboard.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./common/events.h:27,
                 from engines/agi/keyboard.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32,
                 from engines/agi/keyboard.cpp:25:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/loader_v1.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/agi/agi.h:28,
                 from engines/agi/loader_v1.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/logic.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/agi/agi.h:28,
                 from engines/agi/logic.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/loader_v3.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/agi/agi.h:28,
                 from engines/agi/loader_v3.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/graphics.o
In file included from ./common/config-manager.h:27,
                 from engines/agi/graphics.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/cursorman.h:26,
                 from engines/agi/graphics.cpp:27:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/loader_v2.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/agi/agi.h:28,
                 from engines/agi/loader_v2.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/lzw.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/agi/agi.h:28,
                 from engines/agi/lzw.cpp:32:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/motion.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/agi/agi.h:28,
                 from engines/agi/motion.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/objects.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/agi/agi.h:28,
                 from engines/agi/objects.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/opcodes.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/agi/agi.h:28,
                 from engines/agi/opcodes.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/menu.o
In file included from ./common/config-manager.h:27,
                 from engines/agi/menu.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32,
                 from engines/agi/menu.cpp:24:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/metaengine.o
In file included from ./common/config-manager.h:27,
                 from engines/agi/metaengine.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32,
                 from engines/agi/metaengine.cpp:35:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/op_dbg.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/agi/agi.h:28,
                 from engines/agi/op_dbg.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/picture.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/agi/agi.h:28,
                 from engines/agi/picture.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/sound.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/agi/agi.h:28,
                 from engines/agi/sound.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/op_test.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/agi/agi.h:28,
                 from engines/agi/op_test.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/op_cmd.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/agi/agi.h:28,
                 from engines/agi/op_cmd.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/sound_coco3.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/agi/agi.h:28,
                 from engines/agi/sound_coco3.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/adl/display_a2.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from engines/adl/display_a2.cpp:28:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/sound_pcjr.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from engines/agi/sound_pcjr.cpp:56:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32,
                 from engines/agi/sound_pcjr.cpp:57:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/sound_2gs.o
In file included from ./common/config-manager.h:27,
                 from engines/agi/sound_2gs.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32,
                 from engines/agi/sound_2gs.cpp:31:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/sound_sarien.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from engines/agi/sound_sarien.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32,
                 from engines/agi/sound_sarien.cpp:25:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/saveload.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from engines/agi/saveload.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32,
                 from engines/agi/saveload.cpp:38:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/sound_midi.o
In file included from ./common/config-manager.h:27,
                 from engines/agi/sound_midi.cpp:44:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32,
                 from engines/agi/sound_midi.cpp:49:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/sprite.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/agi/agi.h:28,
                 from engines/agi/sprite.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/view.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/agi/agi.h:28,
                 from engines/agi/view.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/text.o
In file included from ./common/config-manager.h:27,
                 from engines/agi/text.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32,
                 from engines/agi/text.cpp:24:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/words.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/agi/agi.h:28,
                 from engines/agi/words.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/systemui.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/agi/agi.h:28,
                 from engines/agi/systemui.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/preagi/preagi.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from engines/agi/preagi/preagi.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32,
                 from ./engines/agi/preagi/preagi.h:25,
                 from engines/agi/preagi/preagi.cpp:29:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/preagi/troll.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/agi/agi.h:28,
                 from ./engines/agi/preagi/preagi.h:25,
                 from engines/agi/preagi/troll.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/drivers/accolade/cms.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from ./audio/cms.h:29,
                 from ./engines/agos/drivers/accolade/cms.h:27,
                 from engines/agos/drivers/accolade/cms.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/drivers/accolade/driverfile.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from engines/agos/drivers/accolade/driverfile.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/drivers/accolade/casio.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mididrv_ms.h:25,
                 from ./audio/casio.h:26,
                 from ./engines/agos/drivers/accolade/casio.h:25,
                 from engines/agos/drivers/accolade/casio.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from ./engines/agos/drivers/accolade/mididriver.h:25,
                 from engines/agos/drivers/accolade/casio.cpp:24:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/drivers/accolade/adlib.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mididrv_ms.h:25,
                 from ./audio/adlib_ms.h:25,
                 from ./engines/agos/drivers/accolade/adlib.h:25,
                 from engines/agos/drivers/accolade/adlib.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from ./engines/agos/drivers/accolade/mididriver.h:25,
                 from engines/agos/drivers/accolade/adlib.cpp:24:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/preagi/mickey.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./common/events.h:27,
                 from engines/agi/preagi/mickey.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/cursorman.h:26,
                 from engines/agi/preagi/mickey.cpp:26:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/drivers/accolade/pc98.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from engines/agos/drivers/accolade/pc98.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/drivers/accolade/mt32.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mididrv_ms.h:25,
                 from ./audio/mt32gm.h:26,
                 from ./engines/agos/drivers/accolade/mt32.h:25,
                 from engines/agos/drivers/accolade/mt32.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from ./engines/agos/drivers/accolade/mididriver.h:25,
                 from engines/agos/drivers/accolade/mt32.cpp:24:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/drivers/simon1/adlib.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mididrv_ms.h:25,
                 from ./audio/adlib_ms.h:25,
                 from ./engines/agos/drivers/simon1/adlib.h:25,
                 from engines/agos/drivers/simon1/adlib.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/charset.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/agos/charset.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/charset.cpp:24:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/contain.o
In file included from ./engines/engine.h:30,
                 from ./engines/agos/agos.h:25,
                 from engines/agos/contain.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agi/preagi/winnie.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/agi/agi.h:28,
                 from ./engines/agi/preagi/preagi.h:25,
                 from engines/agi/preagi/winnie.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agi/agi.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/cursor.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./common/events.h:27,
                 from engines/agos/cursor.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/cursorman.h:26,
                 from engines/agos/cursor.cpp:25:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/charset-fontdata.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/agos/charset-fontdata.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/charset-fontdata.cpp:26:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/agos.o
In file included from ./common/config-manager.h:27,
                 from engines/agos/agos.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/agos.cpp:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/debugger.o
In file included from ./common/config-manager.h:27,
                 from engines/agos/debugger.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/debugger.cpp:25:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/debug.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from engines/agos/debug.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/debug.cpp:28:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/draw.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/agos/draw.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/draw.cpp:28:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/input_pn.o
In file included from ./engines/engine.h:30,
                 from ./engines/agos/agos.h:25,
                 from engines/agos/input_pn.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/input.o
In file included from ./common/config-manager.h:27,
                 from engines/agos/input.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/input.cpp:27:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/event.o
In file included from ./engines/engine.h:30,
                 from ./engines/agos/agos.h:25,
                 from engines/agos/event.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/midiparser_gmf.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/menus.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from engines/agos/menus.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/menus.cpp:28:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/icons.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from engines/agos/icons.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/icons.cpp:28:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/items.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from engines/agos/items.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/items.cpp:26:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/gfx.o
In file included from ./common/debug-channels.h:30,
                 from engines/agos/gfx.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/gfx.cpp:29:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/midiparser_simonwin.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/midiparser_s1d.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from engines/agos/midiparser_s1d.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/metaengine.o
In file included from ./common/config-manager.h:27,
                 from engines/agos/metaengine.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/metaengine.cpp:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/pn.o
In file included from ./common/config-manager.h:27,
                 from engines/agos/pn.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/pn.cpp:25:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/midi.o
In file included from ./common/config-manager.h:27,
                 from engines/agos/midi.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/midi.cpp:27:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/res_ami.o
In file included from ./engines/engine.h:30,
                 from ./engines/agos/agos.h:25,
                 from engines/agos/res_ami.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/rooms.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from engines/agos/rooms.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/rooms.cpp:27:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/res_snd.o
In file included from ./common/config-manager.h:27,
                 from engines/agos/res_snd.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/res_snd.cpp:28:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/script.o
In file included from ./common/debug-channels.h:30,
                 from engines/agos/script.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/script.cpp:29:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/res.o
In file included from ./common/archive.h:31,
                 from engines/agos/res.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/res.cpp:31:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/script_pn.o
In file included from ./engines/engine.h:30,
                 from ./engines/agos/agos.h:25,
                 from engines/agos/script_pn.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/script_ww.o
In file included from ./engines/engine.h:30,
                 from ./engines/agos/agos.h:25,
                 from engines/agos/script_ww.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/script_e2.o
In file included from ./engines/engine.h:30,
                 from ./engines/agos/agos.h:25,
                 from engines/agos/script_e2.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/script_e1.o
In file included from ./engines/engine.h:30,
                 from ./engines/agos/agos.h:25,
                 from engines/agos/script_e1.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/saveload.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from engines/agos/saveload.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/saveload.cpp:29:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/script_s1.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/agos/script_s1.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/script_s1.cpp:27:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/script_s2.o
In file included from ./engines/engine.h:30,
                 from ./engines/agos/agos.h:25,
                 from engines/agos/script_s2.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/sfxparser_accolade.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mididrv_ms.h:25,
                 from ./audio/adlib_ms.h:25,
                 from ./engines/agos/drivers/accolade/adlib.h:25,
                 from ./engines/agos/sfxparser_accolade.h:25,
                 from engines/agos/sfxparser_accolade.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/string_pn.o
In file included from ./engines/engine.h:30,
                 from ./engines/agos/agos.h:25,
                 from engines/agos/string_pn.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/string.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from engines/agos/string.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/string.cpp:29:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/verb_pn.o
In file included from ./engines/engine.h:30,
                 from ./engines/agos/agos.h:25,
                 from engines/agos/verb_pn.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/sound.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from engines/agos/sound.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/sound.cpp:28:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/vga_pn.o
In file included from ./engines/engine.h:30,
                 from ./engines/agos/agos.h:25,
                 from engines/agos/vga_pn.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/verb.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/agos/verb.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/verb.cpp:28:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/subroutine.o
In file included from ./common/debug-channels.h:30,
                 from engines/agos/subroutine.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/subroutine.cpp:27:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/vga_e2.o
In file included from ./engines/engine.h:30,
                 from ./engines/agos/agos.h:25,
                 from engines/agos/vga_e2.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/vga_s1.o
In file included from ./engines/engine.h:30,
                 from ./engines/agos/agos.h:25,
                 from engines/agos/vga_s1.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/vga_ww.o
In file included from ./engines/engine.h:30,
                 from ./engines/agos/agos.h:25,
                 from engines/agos/vga_ww.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/vga.o
In file included from ./engines/engine.h:30,
                 from ./engines/agos/agos.h:25,
                 from engines/agos/vga.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/zones.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from engines/agos/zones.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/zones.cpp:27:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/vga_s2.o
In file included from ./engines/engine.h:30,
                 from ./engines/agos/agos.h:25,
                 from engines/agos/vga_s2.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/window.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/agos/window.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/window.cpp:28:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/script_dp.o
In file included from ./engines/engine.h:30,
                 from ./engines/agos/agos.h:25,
                 from engines/agos/script_dp.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/feeble.o
In file included from ./common/config-manager.h:27,
                 from engines/agos/feeble.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/feeble.cpp:29:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/script_pp.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/agos/script_pp.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/script_pp.cpp:28:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/oracle.o
In file included from ./engines/engine.h:30,
                 from ./engines/agos/agos.h:25,
                 from engines/agos/oracle.cpp:30:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/script_ff.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/agos/script_ff.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32,
                 from engines/agos/script_ff.cpp:29:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/animation.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./common/events.h:27,
                 from engines/agos/animation.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./graphics/cursorman.h:26,
                 from engines/agos/animation.cpp:33:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/agos/vga_ff.o
In file included from ./engines/engine.h:30,
                 from ./engines/agos/agos.h:25,
                 from engines/agos/vga_ff.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/agos/agos.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/dialogs.o
In file included from ./common/config-manager.h:27,
                 from engines/ags/dialogs.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./gui/ThemeEval.h:28,
                 from engines/ags/dialogs.cpp:31:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/ags.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/ags/ags.h:26,
                 from engines/ags/ags.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/ags/shared/util/directory.h:32,
                 from engines/ags/ags.cpp:61:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/game_scanner.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./engines/advancedDetector.h:25,
                 from ./engines/ags/detection.h:25,
                 from engines/ags/game_scanner.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/events.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/ags/events.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/music.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/midiplayer.h:26,
                 from ./engines/ags/music.h:26,
                 from engines/ags/music.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/metaengine.o
In file included from ./engines/achievements.h:28,
                 from ./engines/ags/metaengine.h:25,
                 from engines/ags/metaengine.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/ags/shared/util/directory.h:32,
                 from engines/ags/metaengine.cpp:27:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/lib/aastr-0.1.1/aastr.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/lib/aastr-0.1.1/aastr.h:40,
                 from engines/ags/lib/aastr-0.1.1/aastr.cpp:37:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/lib/allegro/config.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/console.o
In file included from ./engines/engine.h:30,
                 from ./gui/debugger.h:33,
                 from ./engines/ags/console.h:26,
                 from engines/ags/console.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/lib/aastr-0.1.1/aarot.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/lib/aastr-0.1.1/aastr.h:40,
                 from engines/ags/lib/aastr-0.1.1/aarot.cpp:37:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/lib/allegro/draw.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./engines/ags/lib/allegro/gfx.h:25,
                 from ./engines/ags/lib/allegro/draw.h:23,
                 from engines/ags/lib/allegro/draw.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/lib/allegro/file.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from engines/ags/lib/allegro/file.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/lib/allegro/fixed.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/ags/shared/util/stdio_compat.h:26,
                 from ./engines/ags/globals.h:31,
                 from engines/ags/lib/allegro/fixed.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/lib/allegro/flood.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./engines/ags/lib/allegro/flood.h:25,
                 from engines/ags/lib/allegro/flood.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/lib/aastr-0.1.1/aautil.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/lib/aastr-0.1.1/aautil.h:40,
                 from engines/ags/lib/aastr-0.1.1/aautil.cpp:37:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/lib/allegro/graphics.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./engines/ags/lib/allegro/gfx.h:25,
                 from engines/ags/lib/allegro/graphics.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/lib/allegro/color.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from engines/ags/lib/allegro/color.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/globals.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/ags/shared/util/stdio_compat.h:26,
                 from ./engines/ags/globals.h:31,
                 from engines/ags/globals.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/ags/shared/util/directory.h:32,
                 from engines/ags/globals.cpp:41:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/lib/allegro/math.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/ags/shared/util/stdio_compat.h:26,
                 from ./engines/ags/globals.h:31,
                 from engines/ags/lib/allegro/math.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/lib/allegro/rotate.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./engines/ags/lib/allegro/surface.h:25,
                 from ./engines/ags/lib/allegro/rotate.h:26,
                 from engines/ags/lib/allegro/rotate.cpp:1:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/lib/allegro/gfx.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./engines/ags/lib/allegro/gfx.h:25,
                 from engines/ags/lib/allegro/gfx.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/lib/system/datetime.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/ags/lib/system/datetime.h:26,
                 from engines/ags/lib/system/datetime.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/lib/allegro/system.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro/system.h:26,
                 from engines/ags/lib/allegro/system.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/lib/std/std.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/ags/lib/std/chrono.h:25,
                 from engines/ags/lib/std/std.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/lib/allegro/surface.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./engines/ags/lib/allegro/gfx.h:25,
                 from engines/ags/lib/allegro/surface.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/lib/alfont/alfont.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./engines/ags/lib/allegro/surface.h:25,
                 from ./engines/ags/lib/alfont/alfont.h:25,
                 from engines/ags/lib/alfont/alfont.cpp:46:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/ac/dynobj/script_audio_clip.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/shared/ac/dynobj/script_audio_clip.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/ac/common.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/ac/audio_clip_type.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/shared/ac/audio_clip_type.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/lib/allegro/unicode.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/ags/shared/util/stdio_compat.h:26,
                 from ./engines/ags/globals.h:31,
                 from engines/ags/lib/allegro/unicode.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/lib/allegro/surface_generic.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from engines/ags/lib/allegro/surface_generic.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/ac/character_info.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/shared/ac/character_info.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/ac/keycode.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/ac/dialog_topic.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/shared/ac/dialog_topic.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/ac/inventory_item_info.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/shared/ac/inventory_item_info.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/ac/mouse_cursor.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/shared/ac/mouse_cursor.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/ac/game_setup_struct_base.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/ac/game_setup_struct_base.h:25,
                 from engines/ags/shared/ac/game_setup_struct_base.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/core/asset.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/ac/view.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from ./engines/ags/shared/util/proxy_stream.h:25,
                 from ./engines/ags/shared/util/aligned_stream.h:47,
                 from engines/ags/shared/ac/view.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/ac/words_dictionary.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/shared/ac/words_dictionary.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/ac/game_setup_struct.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/ac/game_setup_struct_base.h:25,
                 from ./engines/ags/shared/ac/game_setup_struct.h:28,
                 from engines/ags/shared/ac/game_setup_struct.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/ac/sprite_cache.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/ags/shared/ac/sprite_cache.cpp:28:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/core/asset_manager.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/ags/shared/util/directory.h:31,
                 from engines/ags/shared/core/asset_manager.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/ags/shared/util/directory.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/font/fonts.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./engines/ags/lib/allegro/surface.h:25,
                 from ./engines/ags/lib/alfont/alfont.h:25,
                 from engines/ags/shared/font/fonts.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/font/wfn_font.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/shared/font/wfn_font.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/debugging/debug_manager.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/ags/shared/util/stdio_compat.h:26,
                 from ./engines/ags/globals.h:31,
                 from engines/ags/shared/debugging/debug_manager.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/font/ttf_font_renderer.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./engines/ags/lib/allegro/surface.h:25,
                 from ./engines/ags/lib/alfont/alfont.h:25,
                 from engines/ags/shared/font/ttf_font_renderer.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/ac/sprite_file.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from ./engines/ags/shared/ac/sprite_file.h:37,
                 from engines/ags/shared/ac/sprite_file.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/game/custom_properties.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/shared/game/custom_properties.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/game/room_file_deprecated.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/font/wfn_font_renderer.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/shared/gfx/bitmap.h:51,
                 from engines/ags/shared/font/wfn_font_renderer.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/game/room_file_base.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from ./engines/ags/shared/game/room_file.h:38,
                 from engines/ags/shared/game/room_file_base.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/game/tra_file.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from ./engines/ags/shared/game/tra_file.h:32,
                 from engines/ags/shared/game/tra_file.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/game/interactions.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from ./engines/ags/shared/util/proxy_stream.h:25,
                 from ./engines/ags/shared/util/aligned_stream.h:47,
                 from engines/ags/shared/game/interactions.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/game/room_struct.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from ./engines/ags/shared/game/room_file.h:38,
                 from engines/ags/shared/game/room_struct.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/gfx/allegro_bitmap.o
In file included from ./common/config-manager.h:27,
                 from engines/ags/shared/gfx/allegro_bitmap.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/gfx/bitmap.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/shared/gfx/bitmap.h:51,
                 from engines/ags/shared/gfx/bitmap.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/gui/gui_inv.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/shared/gfx/bitmap.h:51,
                 from ./engines/ags/shared/gui/gui_object.h:26,
                 from ./engines/ags/shared/gui/gui_inv.h:26,
                 from engines/ags/shared/gui/gui_inv.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/gfx/image.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/gfx/image.h:25,
                 from engines/ags/shared/gfx/image.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/gui/gui_button.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from ./engines/ags/shared/ac/sprite_file.h:37,
                 from ./engines/ags/shared/ac/sprite_cache.h:47,
                 from engines/ags/shared/gui/gui_button.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/gui/gui_label.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/shared/font/fonts.h:30,
                 from engines/ags/shared/gui/gui_label.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/game/main_game_file.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/ac/game_setup_struct_base.h:25,
                 from ./engines/ags/shared/ac/game_setup_struct.h:28,
                 from engines/ags/shared/game/main_game_file.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/game/room_file.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from ./engines/ags/shared/game/room_file.h:38,
                 from engines/ags/shared/game/room_file.cpp:28:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/gui/gui_object.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from ./engines/ags/shared/gui/gui_main.h:26,
                 from engines/ags/shared/gui/gui_object.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/script/cc_common.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/ags/shared/util/stdio_compat.h:26,
                 from ./engines/ags/globals.h:31,
                 from engines/ags/shared/script/cc_common.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/gui/gui_slider.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from ./engines/ags/shared/ac/sprite_file.h:37,
                 from ./engines/ags/shared/ac/sprite_cache.h:47,
                 from engines/ags/shared/gui/gui_slider.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/gui/gui_textbox.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/shared/font/fonts.h:30,
                 from engines/ags/shared/gui/gui_textbox.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/gui/gui_listbox.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/shared/gfx/bitmap.h:51,
                 from ./engines/ags/shared/gui/gui_object.h:26,
                 from ./engines/ags/shared/gui/gui_listbox.h:26,
                 from engines/ags/shared/gui/gui_listbox.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/util/aligned_stream.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from ./engines/ags/shared/util/proxy_stream.h:25,
                 from ./engines/ags/shared/util/aligned_stream.h:47,
                 from engines/ags/shared/util/aligned_stream.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/util/buffered_stream.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from ./engines/ags/shared/util/data_stream.h:34,
                 from ./engines/ags/shared/util/file_stream.h:28,
                 from ./engines/ags/shared/util/buffered_stream.h:33,
                 from engines/ags/shared/util/buffered_stream.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/script/cc_script.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/shared/script/cc_script.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/util/data_stream.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from ./engines/ags/shared/util/data_stream.h:34,
                 from engines/ags/shared/util/data_stream.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/util/data_ext.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/shared/util/data_ext.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/util/compress.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/util/wgt2_allg.h:31,
                 from ./engines/ags/shared/util/compress.h:26,
                 from engines/ags/shared/util/compress.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/util/file.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from ./engines/ags/shared/util/data_stream.h:34,
                 from ./engines/ags/shared/util/file_stream.h:28,
                 from ./engines/ags/shared/util/buffered_stream.h:33,
                 from engines/ags/shared/util/file.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/ags/shared/util/directory.h:32,
                 from engines/ags/shared/util/file.cpp:24:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/util/geometry.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/util/directory.o
In file included from ./common/config-manager.h:27,
                 from engines/ags/shared/util/directory.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/ags/shared/util/directory.h:32,
                 from engines/ags/shared/util/directory.cpp:27:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/gui/gui_main.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from ./engines/ags/shared/gui/gui_main.h:26,
                 from engines/ags/shared/gui/gui_main.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/util/ini_file.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/util/file_stream.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from ./engines/ags/shared/util/data_stream.h:34,
                 from ./engines/ags/shared/util/file_stream.h:28,
                 from engines/ags/shared/util/file_stream.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/ags/shared/util/directory.h:32,
                 from engines/ags/shared/util/file_stream.cpp:25:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/util/memory_stream.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from ./engines/ags/shared/util/data_stream.h:34,
                 from ./engines/ags/shared/util/memory_stream.h:39,
                 from engines/ags/shared/util/memory_stream.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/util/lzw.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/shared/util/lzw.cpp:31:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/util/proxy_stream.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from ./engines/ags/shared/util/proxy_stream.h:25,
                 from engines/ags/shared/util/proxy_stream.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/util/path.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from engines/ags/shared/util/path.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/util/string_compat.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/util/stream.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/shared/util/stream.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/util/stdio_compat.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/ags/shared/util/stdio_compat.h:26,
                 from engines/ags/shared/util/stdio_compat.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/ags/shared/util/directory.h:32,
                 from engines/ags/shared/util/stdio_compat.cpp:24:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/util/multi_file_lib.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from ./engines/ags/shared/util/multi_file_lib.h:37,
                 from engines/ags/shared/util/multi_file_lib.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/util/ini_util.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/shared/util/ini_util.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/util/version.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/util/text_stream_writer.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/shared/util/text_stream_writer.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/util/text_stream_reader.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/shared/util/text_stream_reader.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/util/wgt2_allg.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/util/wgt2_allg.h:31,
                 from engines/ags/shared/util/wgt2_allg.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/util/string.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/shared/util/string.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/audio_clip.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/ags/lib/std/chrono.h:25,
                 from ./engines/ags/engine/ac/timer.h:26,
                 from ./engines/ags/engine/media/audio/audio.h:30,
                 from ./engines/ags/engine/media/audio/audio_system.h:28,
                 from engines/ags/engine/ac/audio_clip.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/shared/util/string_utils.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/shared/util/string_utils.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/audio_channel.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/ags/lib/std/chrono.h:25,
                 from ./engines/ags/engine/ac/timer.h:26,
                 from ./engines/ags/engine/ac/game_state.h:31,
                 from engines/ags/engine/ac/audio_channel.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/cd_audio.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/ags/shared/util/stdio_compat.h:26,
                 from ./engines/ags/globals.h:31,
                 from engines/ags/engine/ac/cd_audio.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/character_extras.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/engine/ac/character_extras.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/date_time.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/ags/lib/std/chrono.h:25,
                 from ./engines/ags/engine/ac/timer.h:26,
                 from ./engines/ags/engine/script/cc_instance.h:27,
                 from ./engines/ags/engine/script/script_runtime.h:27,
                 from engines/ags/engine/ac/date_time.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/character_info_engine.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/ac/game_setup_struct_base.h:25,
                 from ./engines/ags/shared/ac/game_setup_struct.h:28,
                 from engines/ags/engine/ac/character_info_engine.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/button.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/ags/shared/util/stdio_compat.h:26,
                 from ./engines/ags/globals.h:31,
                 from ./engines/ags/engine/ac/button.h:25,
                 from engines/ags/engine/ac/button.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dialog_options_rendering.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/game/room_struct.h:50,
                 from ./engines/ags/engine/ac/dynobj/script_drawing_surface.h:26,
                 from ./engines/ags/engine/ac/dynobj/script_dialog_options_rendering.h:25,
                 from ./engines/ags/engine/ac/dialog_options_rendering.h:26,
                 from engines/ags/engine/ac/dialog_options_rendering.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dialog.o
In file included from engines/ags/engine/ac/dialog.cpp:22:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from ./engines/ags/shared/gui/gui_main.h:26,
                 from ./engines/ags/engine/ac/display.h:25,
                 from engines/ags/engine/ac/dialog.cpp:28:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/display.o
In file included from ./common/config-manager.h:27,
                 from engines/ags/engine/ac/display.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/draw_software.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/shared/gfx/bitmap.h:51,
                 from ./engines/ags/engine/ac/draw_software.h:32,
                 from engines/ags/engine/ac/draw_software.cpp:49:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/drawing_surface.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from engines/ags/engine/ac/drawing_surface.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dynamic_sprite.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/game/room_struct.h:50,
                 from ./engines/ags/engine/ac/dynobj/script_drawing_surface.h:26,
                 from ./engines/ags/engine/ac/dynamic_sprite.h:26,
                 from engines/ags/engine/ac/dynamic_sprite.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/game_setup.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/event.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from engines/ags/engine/ac/event.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/file.o
In file included from ./common/config-manager.h:27,
                 from engines/ags/engine/ac/file.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/ags/shared/util/directory.h:32,
                 from engines/ags/engine/ac/file.cpp:42:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_audio.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/ac/game_setup_struct_base.h:25,
                 from ./engines/ags/shared/ac/game_setup_struct.h:28,
                 from engines/ags/engine/ac/global_audio.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_button.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/ags/shared/util/stdio_compat.h:26,
                 from ./engines/ags/globals.h:31,
                 from ./engines/ags/engine/ac/button.h:25,
                 from engines/ags/engine/ac/global_button.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/character.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/ac/game_setup_struct_base.h:25,
                 from ./engines/ags/shared/ac/game_setup_struct.h:28,
                 from engines/ags/engine/ac/character.cpp:30:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_date_time.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/ags/engine/ac/global_date_time.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_character.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from ./engines/ags/shared/gui/gui_main.h:26,
                 from ./engines/ags/engine/ac/display.h:25,
                 from engines/ags/engine/ac/global_character.cpp:32:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/draw.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/lib/aastr-0.1.1/aastr.h:40,
                 from engines/ags/engine/ac/draw.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_dialog.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/ac/game_setup_struct_base.h:25,
                 from ./engines/ags/shared/ac/game_setup_struct.h:28,
                 from engines/ags/engine/ac/global_dialog.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_debug.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from engines/ags/engine/ac/global_debug.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/game_state.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from engines/ags/engine/ac/game_state.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_display.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from ./engines/ags/shared/gui/gui_main.h:26,
                 from ./engines/ags/engine/ac/display.h:25,
                 from engines/ags/engine/ac/global_display.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_dynamic_sprite.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from engines/ags/engine/ac/global_dynamic_sprite.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_file.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/ags/shared/util/directory.h:31,
                 from engines/ags/engine/ac/global_file.cpp:30:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/ags/shared/util/directory.h:32:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_drawing_surface.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from ./engines/ags/shared/gui/gui_main.h:26,
                 from ./engines/ags/engine/ac/display.h:25,
                 from engines/ags/engine/ac/global_drawing_surface.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/game.o
In file included from ./common/config-manager.h:27,
                 from engines/ags/engine/ac/game.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/ags/shared/util/directory.h:32,
                 from engines/ags/engine/ac/game.cpp:80:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_gui.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from ./engines/ags/shared/gui/gui_main.h:26,
                 from ./engines/ags/engine/ac/display.h:25,
                 from engines/ags/engine/ac/global_gui.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_hotspot.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from engines/ags/engine/ac/global_hotspot.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_inventory_item.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/ac/game_setup_struct_base.h:25,
                 from ./engines/ags/shared/ac/game_setup_struct.h:28,
                 from engines/ags/engine/ac/global_inventory_item.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_inv_window.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/ags/lib/std/chrono.h:25,
                 from ./engines/ags/engine/ac/timer.h:26,
                 from ./engines/ags/engine/ac/game_state.h:31,
                 from engines/ags/engine/ac/global_inv_window.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_game.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/ags/lib/system/datetime.h:26,
                 from ./engines/ags/engine/ac/global_game.h:26,
                 from engines/ags/engine/ac/global_game.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_label.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/ac/game_setup_struct_base.h:25,
                 from ./engines/ags/shared/ac/game_setup_struct.h:28,
                 from engines/ags/engine/ac/global_label.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_listbox.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/shared/gfx/bitmap.h:51,
                 from ./engines/ags/shared/gui/gui_object.h:26,
                 from ./engines/ags/shared/gui/gui_listbox.h:26,
                 from ./engines/ags/engine/ac/listbox.h:25,
                 from engines/ags/engine/ac/global_listbox.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_mouse.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/ags/lib/std/chrono.h:25,
                 from ./engines/ags/engine/ac/timer.h:26,
                 from ./engines/ags/engine/ac/game_state.h:31,
                 from engines/ags/engine/ac/global_mouse.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_overlay.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from engines/ags/engine/ac/global_overlay.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_palette.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from engines/ags/engine/ac/global_palette.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_api.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/ags/lib/std/chrono.h:25,
                 from ./engines/ags/engine/ac/timer.h:26,
                 from ./engines/ags/engine/script/cc_instance.h:27,
                 from ./engines/ags/engine/script/script_runtime.h:27,
                 from engines/ags/engine/ac/global_api.cpp:30:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_parser.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/ags/lib/std/chrono.h:25,
                 from ./engines/ags/engine/ac/timer.h:26,
                 from ./engines/ags/engine/ac/game_state.h:31,
                 from engines/ags/engine/ac/global_parser.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_region.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/ags/lib/std/chrono.h:25,
                 from ./engines/ags/engine/ac/timer.h:26,
                 from ./engines/ags/engine/ac/game_state.h:31,
                 from engines/ags/engine/ac/global_region.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_room.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from engines/ags/engine/ac/global_room.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_object.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from engines/ags/engine/ac/global_object.cpp:28:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_screen.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from engines/ags/engine/ac/global_screen.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_slider.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/ac/game_setup_struct_base.h:25,
                 from ./engines/ags/shared/ac/game_setup_struct.h:28,
                 from engines/ags/engine/ac/global_slider.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_string.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/ags/shared/util/stdio_compat.h:26,
                 from ./engines/ags/globals.h:31,
                 from engines/ags/engine/ac/global_string.cpp:28:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_timer.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/ags/lib/std/chrono.h:25,
                 from ./engines/ags/engine/ac/timer.h:26,
                 from ./engines/ags/engine/ac/game_state.h:31,
                 from engines/ags/engine/ac/global_timer.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_textbox.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/ac/game_setup_struct_base.h:25,
                 from ./engines/ags/shared/ac/game_setup_struct.h:28,
                 from engines/ags/engine/ac/global_textbox.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_translation.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from ./engines/ags/shared/gui/gui_main.h:26,
                 from ./engines/ags/engine/ac/display.h:25,
                 from engines/ags/engine/ac/global_translation.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_viewport.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from engines/ags/engine/ac/global_viewport.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_walk_behind.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from engines/ags/engine/ac/global_walk_behind.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_walkable_area.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from engines/ags/engine/ac/global_walkable_area.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/interface_button.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/interface_element.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_video.o
In file included from ./common/config-manager.h:27,
                 from engines/ags/engine/ac/global_video.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/global_view_frame.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/ac/game_setup_struct_base.h:25,
                 from ./engines/ags/shared/ac/game_setup_struct.h:28,
                 from engines/ags/engine/ac/global_view_frame.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/gui_inv.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/shared/gfx/bitmap.h:51,
                 from ./engines/ags/shared/gui/gui_object.h:26,
                 from ./engines/ags/shared/gui/gui_inv.h:26,
                 from engines/ags/engine/ac/gui_inv.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/inventory_item.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/ac/game_setup_struct_base.h:25,
                 from ./engines/ags/shared/ac/game_setup_struct.h:28,
                 from engines/ags/engine/ac/inventory_item.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/hotspot.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/ags/lib/std/chrono.h:25,
                 from ./engines/ags/engine/ac/timer.h:26,
                 from ./engines/ags/engine/ac/game_state.h:31,
                 from engines/ags/engine/ac/hotspot.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/label.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/shared/gfx/bitmap.h:51,
                 from ./engines/ags/shared/gui/gui_object.h:26,
                 from ./engines/ags/shared/gui/gui_label.h:26,
                 from ./engines/ags/engine/ac/label.h:25,
                 from engines/ags/engine/ac/label.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/inv_window.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/shared/gfx/bitmap.h:51,
                 from ./engines/ags/shared/gui/gui_object.h:26,
                 from ./engines/ags/shared/gui/gui_inv.h:26,
                 from ./engines/ags/engine/ac/inv_window.h:27,
                 from engines/ags/engine/ac/inv_window.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/gui_control.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/shared/gfx/bitmap.h:51,
                 from ./engines/ags/shared/gui/gui_object.h:26,
                 from ./engines/ags/engine/ac/gui_control.h:25,
                 from engines/ags/engine/ac/gui_control.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/gui.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from ./engines/ags/shared/gui/gui_main.h:26,
                 from ./engines/ags/engine/ac/gui.h:26,
                 from engines/ags/engine/ac/gui.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/math.o
In file included from ./common/config-manager.h:27,
                 from engines/ags/engine/ac/math.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/move_list.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/engine/ac/move_list.h:25,
                 from engines/ags/engine/ac/move_list.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/listbox.o
In file included from ./common/config-manager.h:27,
                 from engines/ags/engine/ac/listbox.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/properties.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/ac/game_setup_struct_base.h:25,
                 from ./engines/ags/shared/ac/game_setup_struct.h:28,
                 from engines/ags/engine/ac/properties.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/mouse.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from engines/ags/engine/ac/mouse.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/parser.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/ac/game_setup_struct_base.h:25,
                 from ./engines/ags/shared/ac/game_setup_struct.h:28,
                 from engines/ags/engine/ac/parser.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/overlay.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from ./engines/ags/shared/ac/sprite_file.h:37,
                 from ./engines/ags/shared/ac/sprite_cache.h:47,
                 from engines/ags/engine/ac/overlay.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/region.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/ac/game_setup_struct_base.h:25,
                 from ./engines/ags/shared/ac/game_setup_struct.h:28,
                 from engines/ags/engine/ac/region.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/rich_game_media.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/engine/ac/rich_game_media.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/object.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/ac/game_setup_struct_base.h:25,
                 from ./engines/ags/shared/ac/game_setup_struct.h:28,
                 from engines/ags/engine/ac/object.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/route_finder.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/ags/shared/util/stdio_compat.h:26,
                 from ./engines/ags/globals.h:31,
                 from engines/ags/engine/ac/route_finder.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/room_object.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/ac/game_setup_struct_base.h:25,
                 from ./engines/ags/shared/ac/game_setup_struct.h:28,
                 from engines/ags/engine/ac/room_object.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/route_finder_impl.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/engine/ac/move_list.h:25,
                 from engines/ags/engine/ac/route_finder_impl.cpp:30:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/room_status.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/game/room_struct.h:50,
                 from ./engines/ags/engine/ac/room_status.h:27,
                 from engines/ags/engine/ac/room_status.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/screen_overlay.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from ./engines/ags/shared/ac/sprite_file.h:37,
                 from ./engines/ags/shared/ac/sprite_cache.h:47,
                 from engines/ags/engine/ac/screen_overlay.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/route_finder_impl_legacy.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/game/room_struct.h:50,
                 from engines/ags/engine/ac/route_finder_impl_legacy.cpp:33:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/screen.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from engines/ags/engine/ac/screen.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/route_finder_jps.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/slider.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/shared/gfx/bitmap.h:51,
                 from ./engines/ags/shared/gui/gui_object.h:26,
                 from ./engines/ags/shared/gui/gui_slider.h:26,
                 from ./engines/ags/engine/ac/slider.h:25,
                 from engines/ags/engine/ac/slider.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/sprite.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from engines/ags/engine/ac/sprite.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/sprite_cache_engine.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from ./engines/ags/shared/ac/sprite_file.h:37,
                 from ./engines/ags/shared/ac/sprite_cache.h:47,
                 from engines/ags/engine/ac/sprite_cache_engine.cpp:29:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/speech.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/ac/game_setup_struct_base.h:25,
                 from ./engines/ags/shared/ac/game_setup_struct.h:28,
                 from engines/ags/engine/ac/speech.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/ags/shared/util/directory.h:32,
                 from engines/ags/engine/ac/speech.cpp:40:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/room.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from engines/ags/engine/ac/room.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/textbox.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/shared/gfx/bitmap.h:51,
                 from ./engines/ags/shared/gui/gui_object.h:26,
                 from ./engines/ags/shared/gui/gui_textbox.h:26,
                 from ./engines/ags/engine/ac/textbox.h:25,
                 from engines/ags/engine/ac/textbox.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/string.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from ./engines/ags/shared/gui/gui_main.h:26,
                 from ./engines/ags/engine/ac/display.h:25,
                 from engines/ags/engine/ac/string.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/system.o
In file included from ./common/config-manager.h:27,
                 from engines/ags/engine/ac/system.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/sys_events.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./common/events.h:27,
                 from engines/ags/engine/ac/sys_events.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/timer.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/ags/lib/std/chrono.h:25,
                 from ./engines/ags/lib/std/thread.h:25,
                 from engines/ags/engine/ac/timer.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dynobj/cc_ags_dynamic_object.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from ./engines/ags/shared/util/data_stream.h:34,
                 from ./engines/ags/shared/util/memory_stream.h:39,
                 from engines/ags/engine/ac/dynobj/cc_ags_dynamic_object.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/walk_behind.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/game/room_struct.h:50,
                 from ./engines/ags/engine/ac/room_status.h:27,
                 from engines/ags/engine/ac/walk_behind.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/view_frame.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/ac/game_setup_struct_base.h:25,
                 from ./engines/ags/shared/ac/game_setup_struct.h:28,
                 from engines/ags/engine/ac/view_frame.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/walkable_area.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/ags/lib/std/chrono.h:25,
                 from ./engines/ags/engine/ac/timer.h:26,
                 from ./engines/ags/engine/ac/game_state.h:31,
                 from engines/ags/engine/ac/walkable_area.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/translation.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/ac/game_setup_struct_base.h:25,
                 from ./engines/ags/shared/ac/game_setup_struct.h:28,
                 from engines/ags/engine/ac/translation.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dynobj/cc_audio_clip.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/ac/game_setup_struct_base.h:25,
                 from ./engines/ags/shared/ac/game_setup_struct.h:28,
                 from engines/ags/engine/ac/dynobj/cc_audio_clip.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dynobj/cc_audio_channel.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/engine/ac/dynobj/cc_audio_channel.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dynobj/cc_character.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/ac/game_setup_struct_base.h:25,
                 from ./engines/ags/shared/ac/game_setup_struct.h:28,
                 from engines/ags/engine/ac/dynobj/cc_character.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/viewport_script.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from engines/ags/engine/ac/viewport_script.cpp:31:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/script_containers.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from ./engines/ags/engine/ac/dynobj/script_dict.h:41,
                 from engines/ags/engine/ac/script_containers.cpp:32:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dynobj/cc_dialog.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/engine/ac/dynobj/cc_dialog.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dynobj/cc_dynamic_array.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/ags/shared/util/stdio_compat.h:26,
                 from ./engines/ags/globals.h:31,
                 from engines/ags/engine/ac/dynobj/cc_dynamic_array.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dynobj/cc_gui.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/engine/ac/dynobj/cc_gui.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dynobj/cc_gui_object.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from ./engines/ags/shared/gui/gui_main.h:26,
                 from engines/ags/engine/ac/dynobj/cc_gui_object.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dynobj/cc_dynamic_object.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/engine/ac/dynobj/cc_dynamic_object.cpp:42:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dynobj/cc_hotspot.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/game/room_struct.h:50,
                 from engines/ags/engine/ac/dynobj/cc_hotspot.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dynobj/cc_object.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/game/room_struct.h:50,
                 from engines/ags/engine/ac/dynobj/cc_object.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dynobj/cc_inventory.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/engine/ac/dynobj/cc_inventory.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dynobj/script_date_time.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/engine/ac/dynobj/script_date_time.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dynobj/cc_region.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/game/room_struct.h:50,
                 from engines/ags/engine/ac/dynobj/cc_region.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dynobj/script_dict.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from ./engines/ags/engine/ac/dynobj/script_dict.h:41,
                 from engines/ags/engine/ac/dynobj/script_dict.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dynobj/script_dialog_options_rendering.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/game/room_struct.h:50,
                 from ./engines/ags/engine/ac/dynobj/script_drawing_surface.h:26,
                 from ./engines/ags/engine/ac/dynobj/script_dialog_options_rendering.h:25,
                 from engines/ags/engine/ac/dynobj/script_dialog_options_rendering.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dynobj/cc_serializer.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from ./engines/ags/shared/util/data_stream.h:34,
                 from ./engines/ags/shared/util/memory_stream.h:39,
                 from engines/ags/engine/ac/dynobj/cc_serializer.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dynobj/script_camera.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/ags/lib/std/chrono.h:25,
                 from ./engines/ags/engine/ac/timer.h:26,
                 from ./engines/ags/engine/ac/game_state.h:31,
                 from engines/ags/engine/ac/dynobj/script_camera.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dynobj/script_file.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dynobj/script_dynamic_sprite.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/engine/ac/dynobj/script_dynamic_sprite.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dynobj/script_set.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from ./engines/ags/engine/ac/dynobj/script_set.h:40,
                 from engines/ags/engine/ac/dynobj/script_set.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dynobj/script_drawing_surface.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/game/room_struct.h:50,
                 from ./engines/ags/engine/ac/dynobj/script_drawing_surface.h:26,
                 from engines/ags/engine/ac/dynobj/script_drawing_surface.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dynobj/script_overlay.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/engine/ac/dynobj/script_overlay.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dynobj/script_user_object.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/engine/ac/dynobj/script_user_object.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dynobj/managed_object_pool.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/engine/ac/dynobj/managed_object_pool.cpp:29:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dynobj/script_string.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/engine/ac/dynobj/script_string.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dynobj/script_view_frame.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/engine/ac/dynobj/script_view_frame.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/dynobj/script_viewport.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/ags/lib/std/chrono.h:25,
                 from ./engines/ags/engine/ac/timer.h:26,
                 from ./engines/ags/engine/ac/game_state.h:31,
                 from engines/ags/engine/ac/dynobj/script_viewport.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/statobj/static_array.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/ac/statobj/ags_static_object.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/ac/game_setup_struct_base.h:25,
                 from ./engines/ags/shared/ac/game_setup_struct.h:28,
                 from engines/ags/engine/ac/statobj/ags_static_object.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/debugging/console_output_target.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/ags/shared/util/stdio_compat.h:26,
                 from ./engines/ags/globals.h:31,
                 from engines/ags/engine/debugging/console_output_target.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/debugging/file_based_ags_debugger.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/engine/debugging/file_based_ags_debugger.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/debugging/log_file.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/engine/debugging/log_file.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/debugging/message_buffer.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/ags/shared/util/stdio_compat.h:26,
                 from ./engines/ags/globals.h:31,
                 from engines/ags/engine/debugging/message_buffer.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/font/fonts_engine.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/ac/game_setup_struct_base.h:25,
                 from ./engines/ags/shared/ac/game_setup_struct.h:28,
                 from engines/ags/engine/font/fonts_engine.cpp:29:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/device/mouse_w32.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/ags/lib/std/chrono.h:25,
                 from ./engines/ags/engine/ac/timer.h:26,
                 from ./engines/ags/engine/ac/game_state.h:31,
                 from engines/ags/engine/device/mouse_w32.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/debugging/debug.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/ac/game_setup_struct_base.h:25,
                 from ./engines/ags/shared/ac/game_setup_struct.h:28,
                 from engines/ags/engine/debugging/debug.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/gfx/blender.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from engines/ags/engine/gfx/blender.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/game/viewport.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from engines/ags/engine/game/viewport.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/gfx/color_engine.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from engines/ags/engine/gfx/color_engine.cpp:28:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/gfx/gfx_driver_factory.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/shared/gfx/bitmap.h:51,
                 from ./engines/ags/engine/gfx/ali_3d_scummvm.h:40,
                 from engines/ags/engine/gfx/gfx_driver_factory.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/game/savegame.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from engines/ags/engine/game/savegame.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/game/game_init.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from ./engines/ags/shared/gui/gui_main.h:26,
                 from ./engines/ags/engine/ac/display.h:25,
                 from engines/ags/engine/game/game_init.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/gfx/ali_3d_scummvm.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/shared/gfx/bitmap.h:51,
                 from ./engines/ags/engine/gfx/ali_3d_scummvm.h:40,
                 from engines/ags/engine/gfx/ali_3d_scummvm.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/gfx/gfxfilter_scaling.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/gfx/gfx_util.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/shared/gfx/bitmap.h:51,
                 from ./engines/ags/engine/gfx/gfx_util.h:37,
                 from engines/ags/engine/gfx/gfx_util.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/gui/animating_gui_button.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/engine/gui/animating_gui_button.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/gfx/gfxfilter_scummvm_renderer.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/ags/shared/util/stdio_compat.h:26,
                 from ./engines/ags/globals.h:31,
                 from engines/ags/engine/gfx/gfxfilter_scummvm_renderer.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/gfx/gfx_driver_base.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/shared/gfx/bitmap.h:51,
                 from engines/ags/engine/gfx/gfx_driver_base.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/game/savegame_v321.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/ags/shared/util/stdio_compat.h:26,
                 from ./engines/ags/globals.h:31,
                 from ./engines/ags/engine/ac/button.h:25,
                 from engines/ags/engine/game/savegame_v321.cpp:36:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/gui/csci_dialog.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/ags/shared/util/stdio_compat.h:26,
                 from ./engines/ags/globals.h:31,
                 from ./engines/ags/engine/gui/gui_dialog_internal_defs.h:26,
                 from ./engines/ags/engine/gui/csci_dialog.h:32,
                 from engines/ags/engine/gui/csci_dialog.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/gui/my_label.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from ./engines/ags/shared/gui/gui_main.h:26,
                 from ./engines/ags/engine/ac/display.h:25,
                 from engines/ags/engine/gui/my_label.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/gui/gui_engine.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/shared/font/fonts.h:30,
                 from engines/ags/engine/gui/gui_engine.cpp:30:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/game/savegame_components.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from ./engines/ags/engine/game/savegame_components.h:26,
                 from engines/ags/engine/game/savegame_components.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/gui/my_listbox.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/shared/font/fonts.h:30,
                 from engines/ags/engine/gui/my_listbox.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/gui/my_push_button.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./common/events.h:27,
                 from ./engines/ags/engine/ac/sys_events.h:25,
                 from engines/ags/engine/gui/my_push_button.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/gui/gui_dialog.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from engines/ags/engine/gui/gui_dialog.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/gui/my_textbox.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/shared/font/fonts.h:30,
                 from engines/ags/engine/gui/my_textbox.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/gui/new_control.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/shared/gfx/bitmap.h:51,
                 from ./engines/ags/engine/gui/new_control.h:25,
                 from engines/ags/engine/gui/new_control.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/main/engine_setup.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from ./engines/ags/shared/gui/gui_main.h:26,
                 from ./engines/ags/engine/ac/display.h:25,
                 from engines/ags/engine/main/engine_setup.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/main/game_start.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/ac/game_setup_struct_base.h:25,
                 from ./engines/ags/shared/ac/game_setup_struct.h:28,
                 from engines/ags/engine/main/game_start.cpp:30:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/main/config.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/ac/game_setup_struct_base.h:25,
                 from ./engines/ags/shared/ac/game_setup_struct.h:28,
                 from engines/ags/engine/main/config.cpp:26:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/ags/shared/util/directory.h:32,
                 from engines/ags/engine/main/config.cpp:39:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/main/graphics_mode.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from engines/ags/engine/main/graphics_mode.cpp:28:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/main/game_run.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/ags/shared/util/stdio_compat.h:26,
                 from ./engines/ags/globals.h:31,
                 from ./engines/ags/engine/ac/button.h:25,
                 from engines/ags/engine/main/game_run.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/main/quit.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/ac/game_setup_struct_base.h:25,
                 from ./engines/ags/shared/ac/game_setup_struct.h:28,
                 from engines/ags/engine/main/quit.cpp:30:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/main/game_file.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from engines/ags/engine/main/game_file.cpp:29:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/media/audio/ambient_sound.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/ags/lib/std/chrono.h:25,
                 from ./engines/ags/engine/ac/timer.h:26,
                 from ./engines/ags/engine/media/audio/audio.h:30,
                 from engines/ags/engine/media/audio/ambient_sound.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/main/engine.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from engines/ags/engine/main/engine.cpp:27:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/ags/shared/util/directory.h:32,
                 from engines/ags/engine/main/engine.cpp:72:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/media/audio/clip_my_midi.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/util/wgt2_allg.h:31,
                 from engines/ags/engine/media/audio/clip_my_midi.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/media/audio/queued_audio_item.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from ./engines/ags/lib/allegro/file.h:27,
                 from ./engines/ags/shared/util/stream.h:38,
                 from engines/ags/engine/media/audio/queued_audio_item.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/main/main.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from engines/ags/engine/main/main.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
In file included from ./engines/ags/shared/util/directory.h:32,
                 from engines/ags/engine/main/main.cpp:39:
./common/stack.h:47:32: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   47 |         FixedStack<T, MAX_SIZE>() : _size(0) {}
      |                                ^
./common/stack.h:47:32: note: remove the '< >'
./common/stack.h:109:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  109 |         Stack<T>() {}
      |                 ^
./common/stack.h:109:17: note: remove the '< >'
./common/stack.h:110:17: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
  110 |         Stack<T>(const Array<T> &stackContent) : _stack(stackContent) {}
      |                 ^
./common/stack.h:110:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/main/update.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from engines/ags/engine/main/update.cpp:29:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/platform/base/sys_main.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/ags/engine/platform/base/sys_main.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/media/audio/sound.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from ./engines/ags/engine/media/audio/sound_clip.h:31,
                 from ./engines/ags/engine/media/audio/sound.h:32,
                 from engines/ags/engine/media/audio/sound.cpp:29:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/media/audio/sound_clip.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from ./engines/ags/engine/media/audio/sound_clip.h:31,
                 from engines/ags/engine/media/audio/sound_clip.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/media/audio/audio.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/ags/lib/std/chrono.h:25,
                 from ./engines/ags/engine/ac/timer.h:26,
                 from ./engines/ags/engine/media/audio/audio.h:30,
                 from engines/ags/engine/media/audio/audio.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/platform/base/ags_platform_driver.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/util/wgt2_allg.h:31,
                 from engines/ags/engine/platform/base/ags_platform_driver.cpp:28:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/platform/scummvm/scummvm_platform_driver.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/ags/ags.h:26,
                 from engines/ags/engine/platform/scummvm/scummvm_platform_driver.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/script/exports.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/script/executing_script.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/ags/lib/std/chrono.h:25,
                 from ./engines/ags/engine/ac/timer.h:26,
                 from ./engines/ags/engine/script/cc_instance.h:27,
                 from ./engines/ags/engine/script/executing_script.h:25,
                 from engines/ags/engine/script/executing_script.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/script/runtime_script_value.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/media/video/video.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./video/avi_decoder.h:27,
                 from engines/ags/engine/media/video/video.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/script/script_api.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/ags/shared/util/stdio_compat.h:26,
                 from ./engines/ags/globals.h:31,
                 from engines/ags/engine/script/script_api.cpp:28:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/script/script_runtime.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/ags/lib/std/chrono.h:25,
                 from ./engines/ags/engine/ac/timer.h:26,
                 from ./engines/ags/engine/script/cc_instance.h:27,
                 from ./engines/ags/engine/script/system_imports.h:26,
                 from engines/ags/engine/script/script_runtime.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/script/system_imports.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/ags/lib/std/chrono.h:25,
                 from ./engines/ags/engine/ac/timer.h:26,
                 from ./engines/ags/engine/script/cc_instance.h:27,
                 from ./engines/ags/engine/script/system_imports.h:26,
                 from engines/ags/engine/script/system_imports.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/plugin_object_reader.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/core.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/script/script.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/ags/lib/std/chrono.h:25,
                 from ./engines/ags/engine/ac/timer.h:26,
                 from ./engines/ags/engine/script/cc_instance.h:27,
                 from ./engines/ags/engine/script/script.h:27,
                 from engines/ags/engine/script/script.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/audio_channel.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/audio_clip.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/dialog.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/plugin_base.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from engines/ags/plugins/plugin_base.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/button.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./engines/ags/shared/util/stdio_compat.h:26,
                 from ./engines/ags/globals.h:31,
                 from ./engines/ags/engine/ac/button.h:25,
                 from engines/ags/plugins/core/button.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/date_time.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_plugin.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from engines/ags/plugins/ags_plugin.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
engines/ags/plugins/ags_plugin.cpp: In member function 'virtual void AGS3::IAGSEngine::GetRenderStageDesc(AGS3::AGSRenderStageDesc*)':
engines/ags/plugins/ags_plugin.cpp:756:73: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
  756 |                 _G(gfxDriver)->GetStageMatrixes((RenderMatrixes &)desc->Matrixes);
      |                                                                   ~~~~~~^~~~~~~~
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/engine/script/cc_instance.o
In file included from ./common/debug-channels.h:30,
                 from engines/ags/engine/script/cc_instance.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/file.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/dialog_options_rendering_info.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/game/room_struct.h:50,
                 from ./engines/ags/engine/ac/dynobj/script_drawing_surface.h:26,
                 from ./engines/ags/engine/ac/dynobj/script_dialog_options_rendering.h:25,
                 from ./engines/ags/engine/ac/dialog_options_rendering.h:26,
                 from engines/ags/plugins/core/dialog_options_rendering_info.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/drawing_surface.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/game/room_struct.h:50,
                 from ./engines/ags/engine/ac/dynobj/script_drawing_surface.h:26,
                 from ./engines/ags/engine/ac/drawing_surface.h:25,
                 from engines/ags/plugins/core/drawing_surface.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/dynamic_sprite.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/game/room_struct.h:50,
                 from ./engines/ags/engine/ac/dynobj/script_drawing_surface.h:26,
                 from ./engines/ags/engine/ac/dynamic_sprite.h:26,
                 from engines/ags/plugins/core/dynamic_sprite.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/character.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/game.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/ags/lib/system/datetime.h:26,
                 from ./engines/ags/engine/ac/global_game.h:26,
                 from engines/ags/plugins/core/game.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/inventory_item.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/hotspot.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/gui.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from ./engines/ags/shared/gui/gui_main.h:26,
                 from ./engines/ags/engine/ac/gui.h:26,
                 from engines/ags/plugins/core/gui.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/inv_window.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/shared/gfx/bitmap.h:51,
                 from ./engines/ags/shared/gui/gui_object.h:26,
                 from ./engines/ags/shared/gui/gui_inv.h:26,
                 from ./engines/ags/engine/ac/inv_window.h:27,
                 from engines/ags/plugins/core/inv_window.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/label.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/shared/gfx/bitmap.h:51,
                 from ./engines/ags/shared/gui/gui_object.h:26,
                 from ./engines/ags/shared/gui/gui_label.h:26,
                 from ./engines/ags/engine/ac/label.h:25,
                 from engines/ags/plugins/core/label.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/maths.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/mouse.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/ags/lib/system/datetime.h:26,
                 from ./engines/ags/engine/ac/global_game.h:26,
                 from engines/ags/plugins/core/mouse.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/gui_control.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/shared/gfx/bitmap.h:51,
                 from ./engines/ags/shared/gui/gui_object.h:26,
                 from ./engines/ags/engine/ac/gui_control.h:25,
                 from engines/ags/plugins/core/gui_control.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/overlay.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/listbox.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/shared/gfx/bitmap.h:51,
                 from ./engines/ags/shared/gui/gui_object.h:26,
                 from ./engines/ags/shared/gui/gui_listbox.h:26,
                 from ./engines/ags/engine/ac/listbox.h:25,
                 from engines/ags/plugins/core/listbox.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/parser.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/object.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/region.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/system.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/room.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/shared/game/room_struct.h:50,
                 from ./engines/ags/engine/ac/dynobj/script_drawing_surface.h:26,
                 from ./engines/ags/engine/ac/room.h:25,
                 from engines/ags/plugins/core/room.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/slider.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/shared/gfx/bitmap.h:51,
                 from ./engines/ags/shared/gui/gui_object.h:26,
                 from ./engines/ags/shared/gui/gui_slider.h:26,
                 from ./engines/ags/engine/ac/slider.h:25,
                 from engines/ags/plugins/core/slider.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/string.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/textbox.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/shared/gfx/bitmap.h:51,
                 from ./engines/ags/shared/gui/gui_object.h:26,
                 from ./engines/ags/shared/gui/gui_textbox.h:26,
                 from ./engines/ags/engine/ac/textbox.h:25,
                 from engines/ags/plugins/core/textbox.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_app_open_url/ags_app_open_url.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/ags/plugins/ags_app_open_url/ags_app_open_url.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/view_frame.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/shared/gfx/bitmap.h:51,
                 from ./engines/ags/engine/ac/view_frame.h:29,
                 from engines/ags/plugins/core/view_frame.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_agi/ags_agi.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_clipboard/ags_clipboard.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/ags/plugins/ags_clipboard/ags_clipboard.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_consoles/ags_consoles.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_collision_detector/ags_collision_detector.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/plugins/ags_collision_detector/ags_collision_detector.h:26,
                 from engines/ags/plugins/ags_collision_detector/ags_collision_detector.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_controller/ags_controller.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./common/events.h:27,
                 from ./engines/ags/events.h:28,
                 from engines/ags/plugins/ags_controller/ags_controller.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_controller/ags_controller_arcnor.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./common/events.h:27,
                 from ./engines/ags/events.h:28,
                 from engines/ags/plugins/ags_controller/ags_controller_arcnor.cpp:25:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_creditz/drawing.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/core/global_api.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/shared/gfx/allegro_bitmap.h:34,
                 from ./engines/ags/engine/ac/draw.h:29,
                 from ./engines/ags/shared/gui/gui_main.h:26,
                 from ./engines/ags/engine/ac/display.h:25,
                 from engines/ags/plugins/core/global_api.cpp:24:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_creditz/ags_creditz.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./engines/ags/plugins/ags_creditz/ags_creditz.h:28,
                 from engines/ags/plugins/ags_creditz/ags_creditz.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_blend/ags_blend.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_fire/ags_fire.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_joy/ags_joy.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_creditz/ags_creditz1.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./engines/ags/plugins/ags_creditz/ags_creditz.h:28,
                 from ./engines/ags/plugins/ags_creditz/ags_creditz1.h:25,
                 from engines/ags/plugins/ags_creditz/ags_creditz1.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_creditz/ags_creditz2.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./engines/ags/plugins/ags_creditz/ags_creditz.h:28,
                 from ./engines/ags/plugins/ags_creditz/ags_creditz2.h:25,
                 from engines/ags/plugins/ags_creditz/ags_creditz2.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_galaxy_steam/ags_wadjeteye_steam.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./engines/ags/plugins/ags_galaxy_steam/ags_galaxy_steam.h:27,
                 from ./engines/ags/plugins/ags_galaxy_steam/ags_wadjeteye_steam.h:25,
                 from engines/ags/plugins/ags_galaxy_steam/ags_wadjeteye_steam.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_flashlight/gfx.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/plugins/ags_flashlight/ags_flashlight.h:27,
                 from engines/ags/plugins/ags_flashlight/gfx.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_flashlight/ags_flashlight.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from engines/ags/plugins/ags_flashlight/ags_flashlight.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_parallax/ags_parallax.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_snow_rain/ags_snow_rain.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_nickenstien_gfx/ags_nickenstien_gfx.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_galaxy_steam/ags_galaxy_steam.o
In file included from ./engines/achievements.h:28,
                 from ./engines/ags/metaengine.h:25,
                 from engines/ags/plugins/ags_galaxy_steam/ags_galaxy_steam.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_sprite_font/character_entry.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_sprite_font/color.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_sprite_font/sprite_font.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_snow_rain/weather.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from engines/ags/plugins/ags_snow_rain/weather.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_sprite_font/ags_sprite_font.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_sprite_font/ags_sprite_font_clifftop.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_sock/ags_sock.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_sprite_font/sprite_font_renderer_clifftop.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_sprite_font/variable_width_font.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_sprite_font/sprite_font_renderer.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_sprite_font/variable_width_sprite_font.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_sprite_font/variable_width_sprite_font_clifftop.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_sprite_video/ags_sprite_video.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from engines/ags/plugins/ags_sprite_video/ags_sprite_video.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_shell/ags_shell.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./engines/ags/ags.h:26,
                 from engines/ags/plugins/ags_shell/ags_shell.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_touch/ags_touch.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from engines/ags/plugins/ags_touch/ags_touch.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_trans/ags_trans.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_tcp_ip/ags_tcp_ip.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from ./engines/ags/plugins/ags_tcp_ip/ags_tcp_ip.h:26,
                 from engines/ags/plugins/ags_tcp_ip/ags_tcp_ip.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_wadjet_util/ags_wadjet_util.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_waves/data.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from ./engines/ags/plugins/ags_waves/ags_waves.h:25,
                 from engines/ags/plugins/ags_waves/data.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_waves/warper.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from ./engines/ags/plugins/ags_waves/ags_waves.h:25,
                 from engines/ags/plugins/ags_waves/warper.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/lib/freetype-2.1.3/autohint/ahangles.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_waves/ags_waves.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from ./engines/ags/plugins/ags_waves/ags_waves.h:25,
                 from engines/ags/plugins/ags_waves/ags_waves.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_waves/sound.o
In file included from ./common/archive.h:31,
                 from ./common/fs.h:26,
                 from ./common/file.h:26,
                 from engines/ags/plugins/ags_waves/sound.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_pal_render/raycast.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from engines/ags/plugins/ags_pal_render/raycast.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
engines/ags/plugins/ags_pal_render/raycast.cpp: In function 'double AGS3::Plugins::AGSPalRender::fsqrt(double)':
engines/ags/plugins/ags_pal_render/raycast.cpp:180:32: warning: 'tempf' is used uninitialized [-Wuninitialized]
  180 |         *tfptr = (0xbfcdd90a - *tfptr) >> 1; /* estimate of 1/sqrt(y) */
      |                                ^~~~~~
engines/ags/plugins/ags_pal_render/raycast.cpp:176:22: note: 'tempf' declared here
  176 |         double x, z, tempf;
      |                      ^~~~~
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_pal_render/ags_pal_render.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/transform_struct.h:25,
                 from ./graphics/managed_surface.h:27,
                 from ./graphics/screen.h:25,
                 from ./engines/ags/lib/allegro/color.h:26,
                 from ./engines/ags/lib/allegro.h:29,
                 from engines/ags/plugins/ags_pal_render/ags_pal_render.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/lib/freetype-2.1.3/autohint/ahglyph.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from engines/ags/lib/freetype-2.1.3/autohint/ahglyph.cpp:51:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
engines/ags/lib/freetype-2.1.3/autohint/ahglyph.cpp: In function 'void AGS3::FreeType213::ah_outline_save(AH_Outline, FT_GlyphLoader)':
engines/ags/lib/freetype-2.1.3/autohint/ahglyph.cpp:299:46: error: invalid conversion from 'unsigned char*' to 'char*' [-fpermissive]
  299 |         char *tag = gloader->current.outline.tags;
      |                     ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
      |                                              |
      |                                              unsigned char*
engines/ags/lib/freetype-2.1.3/autohint/ahglyph.cpp: In function 'FT_Error AGS3::FreeType213::ah_outline_load(AH_Outline, FT_Face)':
engines/ags/lib/freetype-2.1.3/autohint/ahglyph.cpp:411:45: error: invalid conversion from 'unsigned char*' to 'char*' [-fpermissive]
  411 |                         char *tag = source->tags;
      |                                     ~~~~~~~~^~~~
      |                                             |
      |                                             unsigned char*
engines/ags/lib/freetype-2.1.3/autohint/ahglyph.cpp:460:46: error: invalid conversion from 'short unsigned int*' to 'short int*' [-fpermissive]
  460 |                         short *end = source->contours;
      |                                      ~~~~~~~~^~~~~~~~
      |                                              |
      |                                              short unsigned int*
make: *** [Makefile.common:177: engines/ags/lib/freetype-2.1.3/autohint/ahglyph.o] Error 1
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: *** Waiting for unfinished jobs....
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/lib/freetype-2.1.3/ftgloadr.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/lib/freetype-2.1.3/autohint/ahhint.o
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/lib/freetype-2.1.3/autohint/ahglobal.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from engines/ags/lib/freetype-2.1.3/autohint/ahglobal.cpp:47:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/lib/freetype-2.1.3/ftutil.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from engines/ags/lib/freetype-2.1.3/ftutil.cpp:43:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_waves/weather.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from ./engines/ags/plugins/ags_waves/ags_waves.h:25,
                 from engines/ags/plugins/ags_waves/weather.cpp:22:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      engines/ags/plugins/ags_waves/draw.o
In file included from ./graphics/opengl/context.h:25,
                 from ./common/system.h:34,
                 from ./common/mutex.h:26,
                 from ./audio/mixer.h:25,
                 from ./engines/ags/plugins/ags_waves/ags_waves.h:25,
                 from engines/ags/plugins/ags_waves/draw.cpp:23:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
make: Entering directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
    C++      graphics/tinygl/ztriangle.o
In file included from ./engines/achievements.h:28,
                 from ./engines/metaengine.h:29,
                 from ./common/debug.h:27,
                 from ./common/rect.h:27,
                 from ./graphics/tinygl/zbuffer.h:35,
                 from graphics/tinygl/ztriangle.cpp:30:
./common/singleton.h:44:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   44 |         Singleton<T>(const Singleton<T> &);
      |                     ^
./common/singleton.h:44:21: note: remove the '< >'
./common/singleton.h:91:21: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
   91 |         Singleton<T>()          { }
      |                     ^
./common/singleton.h:91:21: note: remove the '< >'
./common/singleton.h:92:17: warning: template-id not allowed for destructor in C++20 [-Wtemplate-id-cdtor]
   92 |         virtual ~Singleton<T>() { }
      |                 ^
./common/singleton.h:92:17: note: remove the '< >'
make: Leaving directory '/usr/src/RPM/BUILD/scummvm-2.8.0'
error: Bad exit status from /usr/src/tmp/rpm-tmp.36416 (%build)


RPM build errors:
    Bad exit status from /usr/src/tmp/rpm-tmp.36416 (%build)
Command exited with non-zero status 1
806.57user 67.74system 3:18.55elapsed 440%CPU (0avgtext+0avgdata 504620maxresident)k
0inputs+0outputs (0major+17252340minor)pagefaults 0swaps
hsh-rebuild: rebuild of `scummvm-2.8.0-alt1.src.rpm' failed.
Command exited with non-zero status 1
6.49user 2.41system 3:49.52elapsed 3%CPU (0avgtext+0avgdata 138648maxresident)k
304inputs+0outputs (0major+295115minor)pagefaults 0swaps