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  1. Qt
  2. QTBUG-92878

[qt6/cmake] Qt Resource object libraries not found in sibling scopes due to not being global

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    • Commits:
      561fc8107f38b93808343e35c62d7d06704f8eb6 (qt/qtbase/dev) a4e53acc0c7a0a54302cd0ba42a188caf4640d9a (qt/qtbase/6.2)

      Description

      i'm having troubles with setting up a scalable setup:

      i define a library in subdir/CMakeLists.txt:

      add_library(lib lib.cpp)
      
      find_package(Qt6 COMPONENTS Core Gui Widgets Qml Quick REQUIRED)
      target_link_libraries(lib Qt6::Gui Qt6::QCocoaIntegrationPlugin)
      

      this library links to qt6 libraries.

      my executable in the root `CMakeLists.txt` consumes the library:

      project(foo)
      cmake_minimum_required(VERSION 3.20 FATAL_ERROR)
      add_subdirectory(subdir)
      add_executable(exe main.cpp)
      target_link_libraries(exe lib)
      

      this gives me the following cmake configuration error:

      CMake Error at CMakeLists.txt:8 (target_link_libraries):
        Error evaluating generator expression:
      
          $<TARGET_OBJECTS:Qt6::Gui_resources_1>
      
        Objects of target "Qt6::Gui_resources_1" referenced but no such target
        exists.
      
      
      CMake Error at CMakeLists.txt:8 (target_link_libraries):
        Error evaluating generator expression:
      
          $<TARGET_OBJECTS:Qt6::QCocoaIntegrationPlugin_resources_1>
      
        Objects of target "Qt6::QCocoaIntegrationPlugin_resources_1" referenced but
        no such target exists.
      
      
      CMake Error at CMakeLists.txt:8 (target_link_libraries):
        Error evaluating generator expression:
      
          $<TARGET_OBJECTS:Qt6::Gui_resources_1>
      
        Objects of target "Qt6::Gui_resources_1" referenced but no such target
        exists.
      
      
      CMake Error at CMakeLists.txt:8 (target_link_libraries):
        Error evaluating generator expression:
      
          $<TARGET_OBJECTS:Qt6::QCocoaIntegrationPlugin_resources_1>
      
        Objects of target "Qt6::QCocoaIntegrationPlugin_resources_1" referenced but
        no such target exists.
      
      
      -- Generating done
      

      afaict the qt/cmake targets are IMPORTED targets, which are not GLOBAL. therefore the generator expression expands in a context where this target does not exist anymore. things work again once i move the `find_package` expression to the root CMakeLists.txt. unfortunately this is not a solution that i can easily apply to my whole codebase, which is rather modular and as many different consuming endpoints

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              Assignee:
              alexandru.croitor Alexandru Croitor
              Reporter:
              timblechmann tim blechmann
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                Updated:
                Resolved:

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