| Summary: | Breeze fails to build with Qt 6.8.2 due to double definition of a CMake target during configuration | ||
|---|---|---|---|
| Product: | [Plasma] Breeze | Reporter: | Hernan Martinez <hernan.c.martinez> |
| Component: | general | Assignee: | Plasma Bugs List <plasma-bugs-null> |
| Status: | RESOLVED FIXED | ||
| Severity: | major | CC: | georgefb899, julius.kuenzel, nate, uhhadd |
| Priority: | NOR | ||
| Version First Reported In: | 6.3.0 | ||
| Target Milestone: | --- | ||
| Platform: | Microsoft Windows | ||
| OS: | Microsoft Windows | ||
| Latest Commit: | https://invent.kde.org/plasma/breeze/-/commit/58cebc1b298d4491ae4862fa59af5059616ed0e4 | Version Fixed/Implemented In: | |
| Sentry Crash Report: | |||
This is reproducible with both CLANG64 and UCRT64 envitonments. https://stackoverflow.com/questions/36724768/cmake-weird-side-effects-when-find-package-is-called-from-function-as-opposed It builds when changing build_Qt6 function to a macro. Git commit cd3c4778a881bf66800542213da51806a9a4f3b0 by Julius Künzel. Committed on 24/02/2025 at 19:39. Pushed by jlskuz into branch 'master'. Fix Qt6 build regression with MinGW !476 introduced a find_package call for Qt6 in subdir while it was already found previously in the toplevel CMakeLists.txt (implicitely via eg. QtWidgets). With MinGW this failed: ``` CMake Error at C:/gitlab/craft/windows-mingw_64-gcc/lib/cmake/Qt6EntryPointPrivate/Qt6EntryPointMinGW32Target.cmake:4 (add_library): add_library cannot create imported target "EntryPointMinGW32" because another target with the same name already exists. [...] Cannot specify link libraries for target "EntryPointMinGW32" which is not built by this project. [...] CMake Warning at C:/gitlab/craft/windows-mingw_64-gcc/lib/cmake/Qt6/Qt6Config.cmake:181 (find_package): Found package configuration file: C:/gitlab/craft/windows-mingw_64-gcc/lib/cmake/Qt6Core/Qt6CoreConfig.cmake but it set Qt6Core_FOUND to FALSE so package "Qt6Core" is considered to be NOT FOUND. Call Stack (most recent call first): cursors/src/kcursorgen/CMakeLists.txt:2 (find_package) ``` M +1 -1 CMakeLists.txt M +0 -1 cursors/src/kcursorgen/CMakeLists.txt https://invent.kde.org/plasma/breeze/-/commit/cd3c4778a881bf66800542213da51806a9a4f3b0 Git commit 58cebc1b298d4491ae4862fa59af5059616ed0e4 by Julius Künzel. Committed on 28/02/2025 at 07:59. Pushed by jlskuz into branch 'Plasma/6.3'. Fix Qt6 build regression with MinGW !476 introduced a find_package call for Qt6 in subdir while it was already found previously in the toplevel CMakeLists.txt (implicitely via eg. QtWidgets). With MinGW this failed: ``` CMake Error at C:/gitlab/craft/windows-mingw_64-gcc/lib/cmake/Qt6EntryPointPrivate/Qt6EntryPointMinGW32Target.cmake:4 (add_library): add_library cannot create imported target "EntryPointMinGW32" because another target with the same name already exists. [...] Cannot specify link libraries for target "EntryPointMinGW32" which is not built by this project. [...] CMake Warning at C:/gitlab/craft/windows-mingw_64-gcc/lib/cmake/Qt6/Qt6Config.cmake:181 (find_package): Found package configuration file: C:/gitlab/craft/windows-mingw_64-gcc/lib/cmake/Qt6Core/Qt6CoreConfig.cmake but it set Qt6Core_FOUND to FALSE so package "Qt6Core" is considered to be NOT FOUND. Call Stack (most recent call first): cursors/src/kcursorgen/CMakeLists.txt:2 (find_package) ``` M +1 -1 CMakeLists.txt M +0 -1 cursors/src/kcursorgen/CMakeLists.txt https://invent.kde.org/plasma/breeze/-/commit/58cebc1b298d4491ae4862fa59af5059616ed0e4 |
STEPS TO REPRODUCE 1. Using MSYS2's UCRT64 environment configure Breeze for building with CMake OBSERVED RESULT -- The C compiler identification is Clang 19.1.7 -- The CXX compiler identification is Clang 19.1.7 -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Check for working C compiler: D:/M/msys64/clang64/bin/clang.exe - 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: D:/M/msys64/clang64/bin/clang++.exe - skipped -- Detecting CXX compile features -- Detecting CXX compile features - done -- Looking for __GLIBC__ -- Looking for __GLIBC__ - not found -- Performing Test HAVE_DATE_TIME -- Performing Test HAVE_DATE_TIME - Success -- Check if compiler accepts -pthread -- Check if compiler accepts -pthread - yes Installing in /clang64. Run C:/_/B/src/build-CLANG64/prefix.sh to set the environment for breeze. -- Performing Test HAVE_STDATOMIC -- Performing Test HAVE_STDATOMIC - Success -- Found WrapAtomic: TRUE -- Found WrapVulkanHeaders: D:/M/msys64/clang64/include -- Found KF6CoreAddons: D:/M/msys64/clang64/lib/cmake/KF6CoreAddons/KF6CoreAddonsConfig.cmake (found version "6.10.0") -- Found KF6ColorScheme: D:/M/msys64/clang64/lib/cmake/KF6ColorScheme/KF6ColorSchemeConfig.cmake (found version "6.10.0") -- Found KF6Config: D:/M/msys64/clang64/lib/cmake/KF6Config/KF6ConfigConfig.cmake (found version "6.10.0") -- Found KF6GuiAddons: D:/M/msys64/clang64/lib/cmake/KF6GuiAddons/KF6GuiAddonsConfig.cmake (found version "6.10.0") -- Found Gettext: D:/M/msys64/clang64/bin/msgmerge.exe (found version "0.23.1") -- Found KF6I18n: D:/M/msys64/clang64/lib/cmake/KF6I18n/KF6I18nConfig.cmake (found version "6.10.0") -- Found KF6IconThemes: D:/M/msys64/clang64/lib/cmake/KF6IconThemes/KF6IconThemesConfig.cmake (found version "6.10.0") -- Found KF6WindowSystem: D:/M/msys64/clang64/lib/cmake/KF6WindowSystem/KF6WindowSystemConfig.cmake (found version "6.10.0") -- Found KF6: success (found suitable version "6.10.0", minimum required is "6.10.0") found components: CoreAddons ColorScheme Config GuiAddons I18n IconThemes WindowSystem Installing in /clang64. Run C:/_/B/src/build-CLANG64/prefix.sh to set the environment for breeze. CMake Error at D:/M/msys64/clang64/lib/cmake/Qt6EntryPointPrivate/Qt6EntryPointMinGW32Target.cmake:4 (add_library): add_library cannot create imported target "EntryPointMinGW32" because another target with the same name already exists. Call Stack (most recent call first): D:/M/msys64/clang64/lib/cmake/Qt6EntryPointPrivate/Qt6EntryPointPrivateConfig.cmake:140 (include) D:/M/msys64/clang64/share/cmake/Modules/CMakeFindDependencyMacro.cmake:76 (find_package) D:/M/msys64/clang64/lib/cmake/Qt6/QtPublicDependencyHelpers.cmake:145 (find_dependency) D:/M/msys64/clang64/lib/cmake/Qt6Core/Qt6CoreDependencies.cmake:46 (_qt_internal_find_qt_dependencies) D:/M/msys64/clang64/lib/cmake/Qt6Core/Qt6CoreConfig.cmake:45 (include) D:/M/msys64/clang64/lib/cmake/Qt6/Qt6Config.cmake:190 (find_package) cursors/src/kcursorgen/CMakeLists.txt:2 (find_package) CMake Error at D:/M/msys64/clang64/lib/cmake/Qt6EntryPointPrivate/Qt6EntryPointMinGW32Target.cmake:6 (target_link_libraries): Cannot specify link libraries for target "EntryPointMinGW32" which is not built by this project. Call Stack (most recent call first): D:/M/msys64/clang64/lib/cmake/Qt6EntryPointPrivate/Qt6EntryPointPrivateConfig.cmake:140 (include) D:/M/msys64/clang64/share/cmake/Modules/CMakeFindDependencyMacro.cmake:76 (find_package) D:/M/msys64/clang64/lib/cmake/Qt6/QtPublicDependencyHelpers.cmake:145 (find_dependency) D:/M/msys64/clang64/lib/cmake/Qt6Core/Qt6CoreDependencies.cmake:46 (_qt_internal_find_qt_dependencies) D:/M/msys64/clang64/lib/cmake/Qt6Core/Qt6CoreConfig.cmake:45 (include) D:/M/msys64/clang64/lib/cmake/Qt6/Qt6Config.cmake:190 (find_package) cursors/src/kcursorgen/CMakeLists.txt:2 (find_package) CMake Warning at D:/M/msys64/clang64/lib/cmake/Qt6/Qt6Config.cmake:190 (find_package): Found package configuration file: D:/M/msys64/clang64/lib/cmake/Qt6Core/Qt6CoreConfig.cmake but it set Qt6Core_FOUND to FALSE so package "Qt6Core" is considered to be NOT FOUND. Call Stack (most recent call first): cursors/src/kcursorgen/CMakeLists.txt:2 (find_package) -- Configuring incomplete, errors occurred! -- The C compiler identification is Clang 19.1.7 -- The CXX compiler identification is Clang 19.1.7 -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Check for working C compiler: D:/M/msys64/clang64/bin/clang.exe - 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: D:/M/msys64/clang64/bin/clang++.exe - skipped -- Detecting CXX compile features -- Detecting CXX compile features - done -- Looking for __GLIBC__ -- Looking for __GLIBC__ - not found -- Performing Test HAVE_DATE_TIME -- Performing Test HAVE_DATE_TIME - Success -- Check if compiler accepts -pthread -- Check if compiler accepts -pthread - yes Installing in /clang64. Run C:/_/B/src/build-CLANG64/prefix.sh to set the environment for breeze. -- Performing Test HAVE_STDATOMIC -- Performing Test HAVE_STDATOMIC - Success -- Found WrapAtomic: TRUE -- Found WrapVulkanHeaders: D:/M/msys64/clang64/include -- Found KF6CoreAddons: D:/M/msys64/clang64/lib/cmake/KF6CoreAddons/KF6CoreAddonsConfig.cmake (found version "6.10.0") -- Found KF6ColorScheme: D:/M/msys64/clang64/lib/cmake/KF6ColorScheme/KF6ColorSchemeConfig.cmake (found version "6.10.0") -- Found KF6Config: D:/M/msys64/clang64/lib/cmake/KF6Config/KF6ConfigConfig.cmake (found version "6.10.0") -- Found KF6GuiAddons: D:/M/msys64/clang64/lib/cmake/KF6GuiAddons/KF6GuiAddonsConfig.cmake (found version "6.10.0") -- Found Gettext: D:/M/msys64/clang64/bin/msgmerge.exe (found version "0.23.1") -- Found KF6I18n: D:/M/msys64/clang64/lib/cmake/KF6I18n/KF6I18nConfig.cmake (found version "6.10.0") -- Found KF6IconThemes: D:/M/msys64/clang64/lib/cmake/KF6IconThemes/KF6IconThemesConfig.cmake (found version "6.10.0") -- Found KF6WindowSystem: D:/M/msys64/clang64/lib/cmake/KF6WindowSystem/KF6WindowSystemConfig.cmake (found version "6.10.0") -- Found KF6: success (found suitable version "6.10.0", minimum required is "6.10.0") found components: CoreAddons ColorScheme Config GuiAddons I18n IconThemes WindowSystem Installing in /clang64. Run C:/_/B/src/build-CLANG64/prefix.sh to set the environment for breeze. CMake Error at D:/M/msys64/clang64/lib/cmake/Qt6EntryPointPrivate/Qt6EntryPointMinGW32Target.cmake:4 (add_library): add_library cannot create imported target "EntryPointMinGW32" because another target with the same name already exists. Call Stack (most recent call first): D:/M/msys64/clang64/lib/cmake/Qt6EntryPointPrivate/Qt6EntryPointPrivateConfig.cmake:140 (include) D:/M/msys64/clang64/share/cmake/Modules/CMakeFindDependencyMacro.cmake:76 (find_package) D:/M/msys64/clang64/lib/cmake/Qt6/QtPublicDependencyHelpers.cmake:145 (find_dependency) D:/M/msys64/clang64/lib/cmake/Qt6Core/Qt6CoreDependencies.cmake:46 (_qt_internal_find_qt_dependencies) D:/M/msys64/clang64/lib/cmake/Qt6Core/Qt6CoreConfig.cmake:45 (include) D:/M/msys64/clang64/lib/cmake/Qt6/Qt6Config.cmake:190 (find_package) cursors/src/kcursorgen/CMakeLists.txt:2 (find_package) CMake Error at D:/M/msys64/clang64/lib/cmake/Qt6EntryPointPrivate/Qt6EntryPointMinGW32Target.cmake:6 (target_link_libraries): Cannot specify link libraries for target "EntryPointMinGW32" which is not built by this project. Call Stack (most recent call first): D:/M/msys64/clang64/lib/cmake/Qt6EntryPointPrivate/Qt6EntryPointPrivateConfig.cmake:140 (include) D:/M/msys64/clang64/share/cmake/Modules/CMakeFindDependencyMacro.cmake:76 (find_package) D:/M/msys64/clang64/lib/cmake/Qt6/QtPublicDependencyHelpers.cmake:145 (find_dependency) D:/M/msys64/clang64/lib/cmake/Qt6Core/Qt6CoreDependencies.cmake:46 (_qt_internal_find_qt_dependencies) D:/M/msys64/clang64/lib/cmake/Qt6Core/Qt6CoreConfig.cmake:45 (include) D:/M/msys64/clang64/lib/cmake/Qt6/Qt6Config.cmake:190 (find_package) cursors/src/kcursorgen/CMakeLists.txt:2 (find_package) CMake Warning at D:/M/msys64/clang64/lib/cmake/Qt6/Qt6Config.cmake:190 (find_package): Found package configuration file: D:/M/msys64/clang64/lib/cmake/Qt6Core/Qt6CoreConfig.cmake but it set Qt6Core_FOUND to FALSE so package "Qt6Core" is considered to be NOT FOUND. Call Stack (most recent call first): cursors/src/kcursorgen/CMakeLists.txt:2 (find_package) -- Configuring incomplete, errors occurred! EXPECTED RESULT The project is correctly configured for building. SOFTWARE/OS VERSIONS Windows: 11 KDE Plasma Version: 6.3.0 KDE Frameworks Version: 6.10.0 Qt Version: 6.8.2 ADDITIONAL INFORMATION This is my suspcion: ----------------------------------------------------------------------------------------------------- unset(QUERY_EXECUTABLE CACHE) endfunction() < ---- #1 Once we get here, Qt6Core_FOUND is set to 1, but this line clears it if(BUILD_QT6) build_Qt6() endif() function(build_colors_and_cursors) # While it is technically not 100% correct to use versionless # KDEInstallDirs while (maybe) building for both Qt versions, # it doesn't really matter at the end, because colors and cursors # only use ICONDIR and DATADIR which both do not depend on the version include(KDEInstallDirs) add_subdirectory(colors) add_subdirectory(cursors) < --- #3 This looks for Qt6:Core again, with an unset `Qt6Core_FOUND` which in turn gets to that point where Qt6EntryPointPrivateConfig.cmake is called again. endfunction() build_colors_and_cursors() <----- #2 this is called