Qt6 CMake qt_add_resources with LANG why does order matter ?

f222

I am doing some tests with Qt6 and CMake and while attempting to load I18N resources in my project I was faced with a strange behaviour I can't comprehend.

When I try to include my resources like so:

qt_add_resources(
    cmake_qt6_sample_project "images_fr"
    LANG "fr"
    BASE "${CMAKE_CURRENT_SOURCE_DIR}/assets/fr"
    FILES "${CMAKE_CURRENT_SOURCE_DIR}/assets/fr/images/doge.jpg"
)
qt_add_resources(
    cmake_qt6_sample_project "images"
    BASE "${CMAKE_CURRENT_SOURCE_DIR}/assets"
    FILES "${CMAKE_CURRENT_SOURCE_DIR}/assets/images/doge.jpg"
)

I can switch my locale FR to get the French picture with QPixmap background {u":/images/doge.jpg"_s};

But if I switch the order in the CMakeLists like that:

qt_add_resources(
    cmake_qt6_sample_project "images"
    BASE "${CMAKE_CURRENT_SOURCE_DIR}/assets"
    FILES "${CMAKE_CURRENT_SOURCE_DIR}/assets/images/doge.jpg"
)
qt_add_resources(
    cmake_qt6_sample_project "images_fr"
    LANG "fr"
    BASE "${CMAKE_CURRENT_SOURCE_DIR}/assets/fr"
    FILES "${CMAKE_CURRENT_SOURCE_DIR}/assets/fr/images/doge.jpg"
)

There is no way for me to get the French picture.

Is there a reason/something I missed in the documentation explaining that behaviour. Did I do something wrong ?

SGaist

Hi,

Which version of Qt are you using ?

f222

@SGaist I am using Qt 6.9.1 on Windows and am having this issue both with MSVC cl 2022 and clang-cl.
Using ninja as the build system.

I'm sorry for forgetting those details in the first place 😓.

SGaist

Would it be possible to provide a minimal compilable project to study that behavior ?

f222

@SGaist

Yes of course, I've put a minimal compilable project to reproduce the issue on github: qt_cmake_localized_resources_issue