Details
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Bug
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Resolution: Unresolved
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P3: Somewhat important
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None
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6.7.1
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None
Description
building qtwebengine with clang-18 and LTO (-DFEATURE_ltcg=ON -DCMAKE_INTERPROCEDURAL_OPTIMIZATION=ON) gives me this linker error:
FAILED: qtbase/lib/libQt6WebEngineCore.so.6.7.1
: && /usr/bin/clang++-18 -fPIC -march=alderlake -DNDEBUG -O3 -flto=thin -Wl,--no-undefined -Wl,--version-script,/home/tim/dev/qt6/build/qtwebengine/src/core/api/WebEngineCore.version @/home/tim/dev/qt6/build/qtwebengine/src/core/Release/x86_64/QtWebEngineCore_objects.rsp -Wl,--gc-sections -fuse-ld=lld -Wl,--enable-new-dtags -shared -Wl,-soname,libQt6WebEngineCore.so.6 -o qtbase/lib/libQt6WebEngineCore.so.6.7.1 qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/WebEngineCore_autogen/mocs_compilation.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qtwebenginecoreglobal.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebenginecertificateerror.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebengineclientcertificateselection.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebengineclientcertificatestore.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebenginecontextmenurequest.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebenginecookiestore.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebenginedesktopmediarequest.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebenginedownloadrequest.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebenginefilesystemaccessrequest.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebenginefindtextresult.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebenginefullscreenrequest.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebenginehistory.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebenginehttprequest.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebengineloadinginfo.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebenginemessagepumpscheduler.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebenginenavigationrequest.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebenginenewwindowrequest.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebenginenotification.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebenginepage.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebengineprofile.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebenginequotarequest.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebengineregisterprotocolhandlerrequest.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebenginescript.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebenginescriptcollection.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebenginesettings.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebengineurlrequestinfo.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebengineurlrequestinterceptor.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebengineurlrequestjob.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebengineurlscheme.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebengineurlschemehandler.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebengineglobalsettings.cpp.o qtwebengine/src/core/api/CMakeFiles/WebEngineCore.dir/qwebenginewebauthuxrequest.cpp.o -Wl,-rpath,/home/tim/dev/qt6/build/qtbase/lib: qtbase/lib/libQt6WebChannel.so.6.7.1 qtbase/lib/libQt6Positioning.so.6.7.1 -Wl,--start-group @/home/tim/dev/qt6/build/qtwebengine/src/core/Release/x86_64/QtWebEngineCore_archives.rsp -Wl,--end-group -Wl,--no-fatal-warnings @/home/tim/dev/qt6/build/qtwebengine/src/core/Release/x86_64/QtWebEngineCore_ldir.rsp @/home/tim/dev/qt6/build/qtwebengine/src/core/Release/x86_64/QtWebEngineCore_libs.rsp -Wl,--no-fatal-warnings qtbase/lib/libQt6Quick.so.6.7.1 qtbase/lib/libQt6OpenGL.so.6.7.1 qtbase/lib/libQt6Gui.so.6.7.1 /usr/lib/x86_64-linux-gnu/libGLX.so /usr/lib/x86_64-linux-gnu/libOpenGL.so /usr/lib/x86_64-linux-gnu/libxkbcommon.so qtbase/lib/libQt6QmlModels.so.6.7.1 qtbase/lib/libQt6Qml.so.6.7.1 qtbase/lib/libQt6Network.so.6.7.1 qtbase/lib/libQt6QmlBuiltins.a qtbase/lib/libQt6Core.so.6.7.1 -Wl,-rpath-link,/home/tim/dev/qt6/build/qtbase/lib && :
ld.lld: error: inconsistent LTO Unit splitting (recompile with -fsplit-lto-unit)
clang++-18: error: linker command failed with exit code 1 (use -v to see invocation)
ninja: build stopped: subcommand failed.