Arch Linux User Repository

There is still an error in the PKGBUILD. Could be fixerd with

-  export CXXFLAGS+="-Wno-error=sfinae-incomplete"
+  export CXXFLAGS+=" -Wno-error=sfinae-incomplete"

Note the Whitspace before "-Wno-error=sfinae-incomplete"

The build issue appeared in the latest commit a2ee5eb. In build() it does cmake ... -Wno-error=sfinae-incomplete. This flag is destined to the compiler, so this diff fixes the build:

-  cmake -DCMAKE_PREFIX_PATH="/usr/lib/cmake/Qt6" -Dqmlui=ON -Wno-error=sfinae-incomplete
+  export CXXFLAGS+=" -Wno-error=sfinae-incomplete"
+  cmake -DCMAKE_PREFIX_PATH="/usr/lib/cmake/Qt6" -Dqmlui=ON

I think it's the proper way to do CMake PKGBUILDs, but I wouldn't swear on it. Got inspiration from here.

Build is currently failing for me, the initial checks, and exception is as follows:

==> Starting build()...
CMake Warning:
  No source or binary directory provided.  Both will be assumed to be the
  same as the current working directory, but note that this warning will
  become a fatal error in future CMake releases.


-- The C compiler identification is GNU 16.1.1
-- The CXX compiler identification is GNU 16.1.1
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Success
-- Found Threads: TRUE
-- Found OpenGL: /usr/lib/libOpenGL.so
-- Found WrapOpenGL: TRUE
-- Could NOT find WrapVulkanHeaders (missing: Vulkan_INCLUDE_DIR) 
-- Performing Test HAVE_STDATOMIC
-- Performing Test HAVE_STDATOMIC - Success
-- Found WrapAtomic: TRUE
-- Found Cups: /usr/lib/libcups.so (found version "2.4.19")
-- Could NOT find WrapVulkanHeaders (missing: Vulkan_INCLUDE_DIR) 
Found Qt version 6: /usr/lib/cmake/Qt6
-- Found PkgConfig: /usr/bin/pkg-config (found version "2.5.1")
-- Checking for module 'fftw3'
--   Found fftw3, version 3.3.11
-- Checking for module 'sndfile'
--   Found sndfile, version 1.2.2
-- Checking for module 'libusb-1.0'
--   Found libusb-1.0, version 1.0.29
-- Checking for module 'libola'
--   Package 'libola' not found
-- Checking for module 'libolaserver'
--   Package 'libolaserver' not found
-- Checking for modules 'libftdi1;libusb-1.0'
--   Found libftdi1, version 1.5
--   Found libusb-1.0, version 1.0.29
-- Checking for modules 'libftdi;libusb'
--   Found libftdi, version 0.20
--   Found libusb, version 0.1.12
Building with libFTDI1 support. Version: 1.5

Using v1.5+ buffer flush API
-- Checking for module 'libusb-1.0'
--   Found libusb-1.0, version 1.0.29
-- Checking for module 'alsa'
--   Found alsa, version 1.2.15.3
Building QLC+ 5 QML UI
-- Configuring done (1.5s)
-- Generating done (0.3s)
-- Build files have been written to: /home/mdk/.cache/yay/qlcplus/src/qlcplus-QLC-_5.2.1
[  0%] Translating qmlui translations...
<truncated for brevity>
[  4%] Automatic MOC and UIC for target qlcplusengine
[  4%] Built target qlcplusengine_autogen
[  4%] Building CXX object engine/src/CMakeFiles/qlcplusengine.dir/qlcplusengine_autogen/mocs_compilation.cpp.o
In file included from /home/mdk/.cache/yay/qlcplus/src/qlcplus-QLC-_5.2.1/engine/src/qlcplusengine_autogen/Z5NZOC3L2Z/moc_qlcioplugin.cpp:9,
                 from /home/mdk/.cache/yay/qlcplus/src/qlcplus-QLC-_5.2.1/engine/src/qlcplusengine_autogen/mocs_compilation.cpp:42:
/home/mdk/.cache/yay/qlcplus/src/qlcplus-QLC-_5.2.1/engine/src/qlcplusengine_autogen/Z5NZOC3L2Z/../../../../plugins/interfaces/qlcioplugin.h:90:7: error: defining ‘QLCIOPlugin’, which previously failed to be complete in a SFINAE context [-Werror=sfinae-incomplete=]
   90 | class QLCIOPlugin : public QObject
      |       ^~~~~~~~~~~
In file included from /usr/include/qt6/QtCore/qobject.h:19,
                 from /usr/include/qt6/QtCore/QObject:1,
                 from /home/mdk/.cache/yay/qlcplus/src/qlcplus-QLC-_5.2.1/engine/src/qlcplusengine_autogen/EWIEGA46WW/../../bus.h:24,
                 from /home/mdk/.cache/yay/qlcplus/src/qlcplus-QLC-_5.2.1/engine/src/qlcplusengine_autogen/EWIEGA46WW/moc_bus.cpp:9,
                 from /home/mdk/.cache/yay/qlcplus/src/qlcplus-QLC-_5.2.1/engine/src/qlcplusengine_autogen/mocs_compilation.cpp:2:
/usr/include/qt6/QtCore/qmetatype.h:344:64: note: here.  Use ‘-Wsfinae-incomplete=2’ for a diagnostic at that point
  344 |         static auto check(U *) -> std::integral_constant<bool, sizeof(U) != 0>;
      |                                                                ^~~~~~~~~
cc1plus: all warnings being treated as errors
make[2]: *** [engine/src/CMakeFiles/qlcplusengine.dir/build.make:86: engine/src/CMakeFiles/qlcplusengine.dir/qlcplusengine_autogen/mocs_compilation.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:3476: engine/src/CMakeFiles/qlcplusengine.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

I suspect a temp fix might be building with -Wno-error=sfinae-incomplete. I've seen some mention of this issue both on QLC+'s forum (https://www.qlcplus.org/forum/viewtopic.php?t=18575) and on some other sites generically about this issue croppping up since GCC16.

qt6-svg is also needed at runtime

Also depends on libQt63DCore.so.6 at runtime, which is in qt6-3d (only a make dependency right now)

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...