I am trying to use qt_add_shaders() in a CMakeLists.txt file where I create a module with qt_add_qml_module().

It seems qt_add_shaders() is not executed in that case. If I used a target with qt_add_library() it works but it would be good to be able to use qt_add_shaders() with only qt_add_qml_module().

project(shaderModule)
cmake_minimum_required(VERSION 3.16)

#qt_add_library(${PROJECT_NAME} STATIC) #needed for qt_add_shader() to be called

qt_add_shaders(${PROJECT_NAME} "shaders"
    #BATCHABLE
    #PRECOMPILE
    #OPTIMIZED
    PREFIX "MyShaders"
    FILES
        "line.frag"
)

qt_add_qml_module(${PROJECT_NAME}
    URI ${PROJECT_NAME}
)