Details
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Bug
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Resolution: Fixed
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P2: Important
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6.9
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None
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Fedora 41, KDE Plasma, CMake 3.30.7
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97517b20a (dev), aa0e38c60 (6.9)
Description
Consider the following CMake code
cmake_minimum_required(VERSION 3.16)
find_package(Qt6 REQUIRED COMPONENTS Widgets)
set(foo_SRCS foo.cpp)
qt_wrap_ui(foo_SRCS foo.ui)
add_executable(foo ${foo_SRCS})
target_link_libraries(foo Qt6::Widgets)
A complete project can be seen at https://invent.kde.org/nicolasfella/adduitest
Building fails with the following error
FAILED: CMakeFiles/foo.dir/foo.cpp.o /usr/lib64/ccache/c++ -DQT_CORE_LIB -DQT_GUI_LIB -DQT_NO_DEBUG -DQT_WIDGETS_LIB -isystem /home/nico/kde/usr/include/QtWidgets -isystem /home/nico/kde/usr/include -isyst em /home/nico/kde/usr/include/QtCore -isystem /home/nico/kde/usr/mkspecs/linux-g++ -isystem /home/nico/kde/usr/include/QtGui -fPIC -MD -MT CMakeFiles/foo.dir/foo.cpp.o -MF CMakeFiles/foo.dir/foo.cpp.o.d -o CMakeFiles/foo.dir/foo.cpp.o -c /home/nico/workspace/adduitest/build/foo.cpp cc1plus: fatal error: /home/nico/workspace/adduitest/build/foo.cpp: No such file or directory
What's curious about this is that it tries to load foo.cpp from the build dir, despite it being in the source dir.
Removing the qt_wrap_ui call makes it build as expected.
This affects the current 6.9 branch (commit a5bafadf8e7d6d8ffd1c3e23747b8761a1f8eef9).
Reverting https://codereview.qt-project.org/c/qt/qtbase/+/624808 fixes the issue