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  1. Qt
  2. QTBUG-87863

CMake configuration fails with multiple calls to find_package(Qt)

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Details

    • Bug
    • Resolution: Done
    • P1: Critical
    • 5.15.3, 5.15.6
    • 5.15.1, 5.15.2
    • Build System: CMake
    • None
    • Android
    • 265d48f688b4169e60055b15702a90eb54262298 (qt/tqtc-qtbase/5.15)

    Description

      Hi

      I'm trying to build my project, which consists of an app and a few libraries, for Android. I'm building with CMake, there's no qmake nor QtCreator.

      I get the following error at configure time:

      CMake Error at C:/dev/qt/5.15.1/android/lib/cmake/Qt5Core/Qt5AndroidSupport.cmake:126 (add_custom_target):
        add_custom_target cannot create target "apk" because another target with
        the same name already exists.  The existing target is a custom target
        created in source directory "my-project".  See
        documentation for policy CMP0002 for more details.
      Call Stack (most recent call first):
        C:/dev/qt/5.15.1/android/lib/cmake/Qt5Core/Qt5CoreConfigExtras.cmake:94 (include)
        C:/dev/qt/5.15.1/android/lib/cmake/Qt5Core/Qt5CoreConfig.cmake:232 (include)
        my-project/CMakeLists.txt:28 (find_package)

      It seems that Qt5AndroidSupport.cmake creates two custom CMake targets ("apk" and "aab") whenever it is included by a call to find_package(Qt). Therefore, multiple calls to find_package(Qt) produce this error, as it tries to create the "apk" and "aab" targets multiple times.

      All this was previously working with Qt 5.13.1.

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            jbornema Joerg Bornemann
            laurentgom Laurent
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            Dates

              Created:
              Updated:
              Resolved:

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