[qgroundcontrol] not compiling because of Werror

[amstan]

The new compilers on arch seem to trigger -Werror=template-id-cdtor on qgroundcontrol.

compiling /home/alex/.cache/pikaur/build/qgroundcontrol/src/qgroundcontrol-4.4.0/libs/shapelib/safileio.c
compiling /home/alex/.cache/pikaur/build/qgroundcontrol/src/qgroundcontrol-4.4.0/libs/xz-embedded/linux/lib/xz/xz_crc32.c
compiling /home/alex/.cache/pikaur/build/qgroundcontrol/src/qgroundcontrol-4.4.0/libs/xz-embedded/linux/lib/xz/xz_crc64.c
compiling /home/alex/.cache/pikaur/build/qgroundcontrol/src/qgroundcontrol-4.4.0/libs/xz-embedded/linux/lib/xz/xz_dec_lzma2.c
compiling /home/alex/.cache/pikaur/build/qgroundcontrol/src/qgroundcontrol-4.4.0/libs/xz-embedded/linux/lib/xz/xz_dec_stream.c
compiling /home/alex/.cache/pikaur/build/qgroundcontrol/src/qgroundcontrol-4.4.0/libs/qmdnsengine/src/src/abstractserver.cpp
compiling /home/alex/.cache/pikaur/build/qgroundcontrol/src/qgroundcontrol-4.4.0/libs/qmdnsengine/src/src/bitmap.cpp
compiling /home/alex/.cache/pikaur/build/qgroundcontrol/src/qgroundcontrol-4.4.0/libs/qmdnsengine/src/src/browser.cpp
compiling /home/alex/.cache/pikaur/build/qgroundcontrol/src/qgroundcontrol-4.4.0/libs/qmdnsengine/src/src/cache.cpp
compiling /home/alex/.cache/pikaur/build/qgroundcontrol/src/qgroundcontrol-4.4.0/libs/qmdnsengine/src/src/dns.cpp
compiling /home/alex/.cache/pikaur/build/qgroundcontrol/src/qgroundcontrol-4.4.0/libs/qmdnsengine/src/src/hostname.cpp
compiling /home/alex/.cache/pikaur/build/qgroundcontrol/src/qgroundcontrol-4.4.0/libs/qmdnsengine/src/src/mdns.cpp
In file included from /usr/include/qt/QtCore/qfuture.h:45,
                 from /usr/include/qt/QtCore/QtCore:97,
                 from /usr/include/qt/QtQml/QtQmlDepends:3,
                 from /usr/include/qt/QtQml/QtQml:3,
                 from /home/alex/.cache/pikaur/build/qgroundcontrol/src/qgroundcontrol-4.4.0/src/MissionManager/MissionItem.h:16,
                 from /home/alex/.cache/pikaur/build/qgroundcontrol/src/qgroundcontrol-4.4.0/src/MissionManager/PlanManager.h:16,
                 from /home/alex/.cache/pikaur/build/qgroundcontrol/src/qgroundcontrol-4.4.0/src/MissionManager/MissionManager.h:12,
                 from /home/alex/.cache/pikaur/build/qgroundcontrol/src/qgroundcontrol-4.4.0/src/Vehicle/Vehicle.h:44,
                 from /home/alex/.cache/pikaur/build/qgroundcontrol/src/qgroundcontrol-4.4.0/src/Joystick/Joystick.h:20,
                 from /home/alex/.cache/pikaur/build/qgroundcontrol/src/qgroundcontrol-4.4.0/src/Settings/SettingsGroup.h:14,
                 from /home/alex/.cache/pikaur/build/qgroundcontrol/src/qgroundcontrol-4.4.0/src/Settings/FlightMapSettings.h:12,
                 from /home/alex/.cache/pikaur/build/qgroundcontrol/src/qgroundcontrol-4.4.0/src/QGCApplication.h:26,
                 from /home/alex/.cache/pikaur/build/qgroundcontrol/src/qgroundcontrol-4.4.0/src/QtLocationPlugin/QGCMapEngine.cpp:18:
/usr/include/qt/QtCore/qfutureinterface.h:284:37: error: template-id not allowed for constructor in C++20 [-Werror=template-id-cdtor]
  284 |     explicit QFutureInterface<void>(State initialState = NoState)
      |                                     ^~~~~
/usr/include/qt/QtCore/qfutureinterface.h:284:37: note: remove the ‘< >’

I'm sure this new error is very helpful for developers (especially since it came after the code was written and it seemed to have been fine until now), but it has no business being considered in a PKGBUILD.

I recommend you filter out any Werror from the project build scripts in your PKGBUILDs.

[edombek]

similar problem...
https://pastebin.com/74x3sTBT

[Islast]

Is there a workaround for this?