Details
-
Bug
-
Resolution: Done
-
P2: Important
-
6.2.0 Beta3
-
None
-
Integrity
-
7e794d71c0bf0f6e812aa1c7794b709889f202fd (qt/qtbase/dev) 2ad29c0a3ae1252c6c30eaca2aa06c131a67f819 (qt/qtbase/6.2) 887f2d5451efffde1a9f80733ea435088e6c1888 (qt/qtbase/6.2.0)
Description
When building a Qt Quick qtdeclarative/examples/quick/animation example with CMake targeting Integrity, the linker fails with
[100%] Linking CXX executable animation [elxr] (error #539) symbol __sti___40_QEglFSEmulatorIntegrationPlugin_init_cpp_11acedbd multiply defined in: /home/tatiana/work/qt6/staticbuilds/6.2branch/targetbuild/qtbase/plugins/egldeviceintegrations/objects-Release/QEglFSEmulatorIntegrationPlugin_init/QEglFSEmulatorIntegrationPlugin_init.cpp.o /home/tatiana/work/qt6/staticbuilds/6.2branch/targetbuild/qtbase/./plugins/egldeviceintegrations/objects-Release/QEglFSEmulatorIntegrationPlugin_init/QEglFSEmulatorIntegrationPlugin_init.cpp.o [elxr] (error #539) symbol __sti___32_QEglFSIntegrationPlugin_init_cpp_11acedbd multiply defined in: /home/tatiana/work/qt6/staticbuilds/6.2branch/targetbuild/qtbase/plugins/platforms/objects-Release/QEglFSIntegrationPlugin_init/QEglFSIntegrationPlugin_init.cpp.o /home/tatiana/work/qt6/staticbuilds/6.2branch/targetbuild/qtbase/./plugins/platforms/objects-Release/QEglFSIntegrationPlugin_init/QEglFSIntegrationPlugin_init.cpp.o [elxr] (error #539) symbol __sti___39_QEglFSOpenWFDIntegrationPlugin_init_cpp_11acedbd multiply defined in: /home/tatiana/work/qt6/staticbuilds/6.2branch/targetbuild/qtbase/plugins/egldeviceintegrations/objects-Release/QEglFSOpenWFDIntegrationPlugin_init/QEglFSOpenWFDIntegrationPlugin_init.cpp.o /home/tatiana/work/qt6/staticbuilds/6.2branch/targetbuild/qtbase/./plugins/egldeviceintegrations/objects-Release/QEglFSOpenWFDIntegrationPlugin_init/QEglFSOpenWFDIntegrationPlugin_init.cpp.o [elxr] (error #539) symbol __sti___19_QGifPlugin_init_cpp_11acedbd multiply defined in: /home/tatiana/work/qt6/staticbuilds/6.2branch/targetbuild/qtbase/plugins/imageformats/objects-Release/QGifPlugin_init/QGifPlugin_init.cpp.o /home/tatiana/work/qt6/staticbuilds/6.2branch/targetbuild/qtbase/./plugins/imageformats/objects-Release/QGifPlugin_init/QGifPlugin_init.cpp.o
The same object file ends up being passed to the linker with slightly different paths:
One with
/qtbase/./plugins /qtbase/plugins
Note the missing dot.
Even when manually editing the link line to remove the ./ part, so the same object file is duplicated twice with the exact same file path, the linker still can't deduplicate it and causes an error when linking.
We need to figure out why CMake is passing the same object file twice to the link line and remove the duplication.
Note Qt was configured and built with following commands:
cmake ../qt5/ -DQT_HOST_PATH=/home/tatiana/work/qt6/staticbuilds/hostbuild/qtbase -DCMAKE_TOOLCHAIN_FILE=/home/tatiana/sa8155/es7/es7_dev_env/hlos_dev_boot/apps/ghs_apps_proc/toolchain_custom.cmake -DQT_QMAKE_TARGET_MKSPEC=devices/integrity-armv8-SA8155P -DBUILD_qtdoc=OFF -DBUILD_qttranslations=OFF -DFEATURE_printdialog=OFF --debug-trycompile -DFEATURE_dbus=OFF -GNinja -DUNIX=ON -DEGL_LIBRARY=/home/tatiana/sa8155/es7/es7_dev_env/hlos_dev_boot/libeglmegapack.a -DEGL_INCLUDE_DIR=/home/tatiana/sa8155/es7/es7_dev_env/hlos_dev_boot/apps/ghs_apps_proc/qc_bsp/AMSS/multimedia/graphics/include/public -DFEATURE_dnslookup=OFF -DFEATURE_glib=OFF -DFEATURE_system_pcre2=OFF -DFEATURE_sql_mysql=OFF
cmake --build . --parallel 8
cmake --install .
An alternative workaround I proposed is to modify the Integrity CMake toolchain file to use https://cmake.org/cmake/help/latest/variable/CMAKE_LANG_LINKER_LAUNCHER.html to set a shell script wrapper that would filter out duplicate object files and then pass that on to the linker.