qt6-qtimageformats fails to build

[tobbi (Tobias Markus)]

I'm trying to install qt6-qtimageformats on this MacBook and it fails to build.

I can see two instances of errors on the log:

:info:configure CMake Error at /opt/local/libexec/qt6/lib/cmake/Qt6/QtPublicTargetHelpers.cmake:257 (set_property):
:info:configure   Attempt to promote imported target "Threads::Threads" to global scope (by
:info:configure   setting IMPORTED_GLOBAL) which is not built in this directory.
:info:configure Call Stack (most recent call first):
:info:configure   /opt/local/libexec/qt6/lib/cmake/Qt6/QtPublicWalkLibsHelpers.cmake:252 (__qt_internal_promote_target_to_global)
:info:configure   /opt/local/libexec/qt6/lib/cmake/Qt6/QtPublicWalkLibsHelpers.cmake:225 (__qt_internal_walk_libs)
:info:configure   /opt/local/libexec/qt6/lib/cmake/Qt6/QtFindPackageHelpers.cmake:12 (__qt_internal_walk_libs)
:info:configure   /opt/local/libexec/qt6/lib/cmake/Qt6/QtFindPackageHelpers.cmake:181 (qt_find_package_promote_targets_to_global_scope)
:info:configure   src/imageformats/configure.cmake:19 (qt_find_package)
:info:configure   src/plugins/imageformats/CMakeLists.txt:9 (include)

and earlier

:info:configure CMake Error at /opt/local/libexec/qt6/lib/cmake/Qt6/QtProcessConfigureArgs.cmake:965 (message):
:info:configure   CMake exited with code 1.
:info:configure Command failed:  cd "/opt/local/var/macports/build/_usr_local_ports_aqua_qt6-devel/qt6-devel-qtimageformats/work/build" && /opt/local/libexec/qt6/bin/qt-configure-module /opt/local/var/macports/build/_usr_local_ports_aqua_qt6-devel/qt6-devel-qtimageformats/work/qtimageformats-everywhere-src-6.4.3 -verbose -- -DQT_BUILD_EXAMPLES=OFF -DQT_BUILD_TESTS=OFF -DCMAKE_C_COMPILER=/usr/bin/clang -DCMAKE_CXX_COMPILER=/usr/bin/clang++ -DCMAKE_OBJC_COMPILER=/usr/bin/clang -DCMAKE_OBJCXX_COMPILER=/usr/bin/clang++ -DCMAKE_OSX_DEPLOYMENT_TARGET=10.15 -DCMAKE_OSX_ARCHITECTURES="x86_64" -DCMAKE_INSTALL_NAME_DIR=/opt/local/libexec/qt6/lib 
:info:configure Exit code: 1
:error:configure Failed to configure qt6-devel-qtimageformats: configure failure: command execution failed
:debug:configure Error code: NONE
:debug:configure Backtrace: configure failure: command execution failed
:debug:configure     while executing
:debug:configure "$procedure $targetname"
:error:configure See /opt/local/var/macports/logs/_usr_local_ports_aqua_qt6-devel/qt6-devel-qtimageformats/main.log for details.

My port qt6-devel-qtimageformats is on par with qt6-imageformats except for applying the patch from #68713

[tobbi (Tobias Markus)]

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