Using generated QRC file with cmake

alex-zrythm

Hi,

I'm using Qt6 via cmake and I generate my QRC file using a python script, like below:

set(out_file "${CMAKE_CURRENT_BINARY_DIR}/resources.qrc")
add_custom_command(
  OUTPUT ${out_file}
  COMMAND ${Python3_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/gen-qt-resources-xml.py
    ${CMAKE_CURRENT_SOURCE_DIR}
    ${CMAKE_CURRENT_SOURCE_DIR}
    ${APPDATA_FILE}
    ${out_file}
  DEPENDS ${ui_files} appdata-xml-merged
  COMMENT "Generating resources.qrc"
)

Then I do

qt_add_resources(zrythm "resources"
  FILES ${out_file})

But this doesn't work (I get the error below), and I have no way to tell QT that there is a dependency on the generated file.

[cmake] CMake Error at /home/alex/opt/Qt6.7.2/lib/cmake/Qt6Core/Qt6CoreMacros.cmake:1758 (message):
[cmake]   The source file
[cmake]   '/home/alex/Documents/git/zrythm/builddir_cmake/resources/resources.qrc'
[cmake]   was specified with an absolute path and is used in a Qt resource.  Please
[cmake]   set the QT_RESOURCE_ALIAS property on that source file to a relative path
[cmake]   to make the file properly accessible via the resource system.
[cmake] Call Stack (most recent call first):
[cmake]   /home/alex/opt/Qt6.7.2/lib/cmake/Qt6Core/Qt6CoreMacros.cmake:2231 (__qt_get_relative_resource_path_for_file)
[cmake]   /home/alex/opt/Qt6.7.2/lib/cmake/Qt6Core/Qt6CoreMacros.cmake:337 (_qt_internal_process_resource)
[cmake]   /home/alex/opt/Qt6.7.2/lib/cmake/Qt6Core/Qt6CoreMacros.cmake:389 (qt6_add_resources)
[cmake]   resources/CMakeLists.txt:90 (qt_add_resources)
[cmake] 
[cmake] 
[cmake] -- Configuring incomplete, errors occurred!

Is this possible to do at all?

Christian Ehrlicher

Why do you want to add a resource file to a Qt resource? Because this is what you're doing - see the documentation.

You either want qt_add_resources(SOURCES example.qrc) or simply add the generated resource file to your target sources and make sure CMAKE_AUTORCC is on (which should be by default for qt projects iirc).

alex-zrythm

I was indeed using the wrong variant. I'm not sure if that variant works with a generated .qrc file either, but I ended up just globbing the actual files and adding them to the FILES option, since that's what I was basically doing in my python script (I was globbing the files and outputing them in .qrc format). Thanks anyway