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The desktop files exec command semms to not match anymore for qlcplus in version 5. This makes the launcher dissapear and breaks it. The executable of version 4 was called qlcplus and with version 5 my executable is called qlcplus-qml. It seems caused by upstream. There is a module named qlcplus-qml, but the desktop file uses the previous versions name.

Now this might be intentional by upstream, to continue official linux support for version 4 instead of version 5, although version 5 is officially released.

So all in all I try to correct this upstream, but wanted to let you know in case you have a different view on things.

Best wishes, Tobias

qt5-tools seems to be missing from the build dependencies.

I got the error ./translate.sh: line 15: LRELEASE: lrelease not found during build

Your PKGBUILD failed for me:

[ 93%] Building CXX object qmlui/CMakeFiles/qlcplus-qml.dir/contextmanager.cpp.o
/home/rogue/.cache/yay/qlcplus/src/qlcplus-QLC-_5.0.0/qmlui/contextmanager.cpp: In member function ‘void ContextManager::setFixtureSelection(quint32, int, bool)’:
/home/rogue/.cache/yay/qlcplus/src/qlcplus-QLC-_5.0.0/qmlui/contextmanager.cpp:606:5: error: ‘QMultiHashIterator’ was not declared in this scope; did you mean ‘QMutableHashIterator’?
  606 |     QMultiHashIterator<int, SceneValue> it(channels);
      |     ^~~~~~~~~~~~~~~~~~
      |     QMutableHashIterator
/home/rogue/.cache/yay/qlcplus/src/qlcplus-QLC-_5.0.0/qmlui/contextmanager.cpp:606:24: error: expected primary-expression before ‘int’
  606 |     QMultiHashIterator<int, SceneValue> it(channels);
      |                        ^~~
/home/rogue/.cache/yay/qlcplus/src/qlcplus-QLC-_5.0.0/qmlui/contextmanager.cpp:607:12: error: ‘it’ was not declared in this scope; did you mean ‘int’?
  607 |     while (it.hasNext())
      |            ^~
      |            int
make[2]: *** [qmlui/CMakeFiles/qlcplus-qml.dir/build.make:621: qmlui/CMakeFiles/qlcplus-qml.dir/contextmanager.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:11004: qmlui/CMakeFiles/qlcplus-qml.dir/all] Error 2
make: *** [Makefile:156: all] Error 2
==> ERROR: A failure occurred in build().
    Aborting...
 -> error making: qlcplus-exit status 4
 -> Failed to install the following packages. Manual intervention is required:
qlcplus - exit status 4

However adding

options=(!lto)

between the 'sha512sums' and 'prepare()' lines in the original PKGBUILD file worked.

Thanks for the hint!

Disabling lto seems to fix it (I use my own pkgbuild: http://0x0.st/Kujg.txt)

I just triedy it one more time. Same problem here, currently I dont hava a solution. Maybe an upstream problem?

It seems to be a cmake problem...

Build is failing here... Can I help debug?

[100%] Linking CXX executable qlcplus-qml
/usr/src/debug/qlcplus/qlcplus-QLC-_5.0.0/qmlui/../engine/src/script.h:38:7: error: type ‘struct Script’ violates the C++ One Definition Rule [-Werror=odr]
/usr/src/debug/qlcplus/qlcplus-QLC-_5.0.0/qmlui/../engine/src/scriptv4.h:38:7: note: a different type is defined in another translation unit
/usr/src/debug/qlcplus/qlcplus-QLC-_5.0.0/qmlui/../engine/src/script.h:282:10: note: the first difference of corresponding definitions is field ‘m_stopOnExit’
/usr/src/debug/qlcplus/qlcplus-QLC-_5.0.0/qmlui/../engine/src/scriptv4.h:171:19: note: a field with different name is defined in another translation unit
lto1: all warnings being treated as errors
lto-wrapper: fatal error: /usr/bin/c++ returned 1 exit status
compilation terminated.
/usr/bin/ld: error: lto-wrapper failed
collect2: error: ld returned 1 exit status
make[2]: *** [qmlui/CMakeFiles/qlcplus-qml.dir/build.make:1549: qmlui/qlcplus-qml] Error 1
make[1]: *** [CMakeFiles/Makefile2:11004: qmlui/CMakeFiles/qlcplus-qml.dir/all] Error 2
make: *** [Makefile:156: all] Error 2
==> ERROR: A failure occurred in build().
    Aborting...
 -> error making: qlcplus-exit status 4
 -> Failed to install the following packages. Manual intervention is required:
qlcplus - exit status 4

qt5-websockets should be moved to depends, as it's required at runtime as well.

The move to CMake didn't include the cmake package as a make dependency, which it should be as CMake is not included in base-devel. Simply installing CMake made the build work for me, but it wasn't in a isolated container, so I may have other needed dependencies installed that aren't in the PKGBUILD.

filmroellchen, this should set make -j system-wide: https://wiki.archlinux.org/title/Makepkg#Parallel_compilation does this help?

Would it be possible to use make -j $(nproc) for the make commands? This package takes forever to build on my system simply because it only ever runs one compile command at a time.

Additionally, the build should be migrated to CMake. The official wiki lists the QMake build as deprecated, so it’s unclear how long the QMake build will stick around.