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    Solved MacOS dylib plugin loading path changes from Qt 5.15 to Qt 6.2

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    • Q
      QKelteseth last edited by QKelteseth

      Hi,

      I'm no longer able to load my Steam plugin with the way it worked in 5.15 on macOS. It does still work on Windows. I created a qml plugin that gets loaded on runtime that needs the libsteam_api.dylib. Previously placing the libsteam_api.dylib beside the plugin worked fine.

      // This fixed the plugin loading in 5.15
 m_mainWindowEngine->addPluginPath(QGuiApplication::instance()->applicationDirPath());
// Does also not work when adding: 
m_mainWindowEngine->addPluginPath(QGuiApplication::instance()->applicationDirPath() + "/Workshop");

      Now it ony works on macOS when placing the libsteam_api.dylib besides the .app file.

      "qrc:/ScreenPlay/qml/Workshop/SteamWorkshop.qml:6:1: 
Die Bibliothek /Users/eli/Documents/build-ScreenPlay-ScreenPlay_Qt_6_2_1_clang_64bit-Release/bin/ScreenPlay.app/Contents/MacOS/Workshop/libScreenPlayWorkshopplugin.dylib kann nicht geladen werden: 
(dlopen(/Users/eli/Documents/build-ScreenPlay-ScreenPlay_Qt_6_2_1_clang_64bit-Release/bin/ScreenPlay.app/Contents/MacOS/Workshop/libScreenPlayWorkshopplugin.dylib,
 0x0085): Library not loaded: @rpath/libScreenPlayWorkshop.dylib\n  Referenced from: /Users/eli/Documents/build-ScreenPlay-ScreenPlay_Qt_6_2_1_clang_64bit-Release/bin/ScreenPlay.app/Contents/MacOS/Workshop/libScreenPlayWorkshopplugin.dylib\n  
Reason: tried: '/Users/eli/Documents/build-ScreenPlay-ScreenPlay_Qt_6_2_1_clang_64bit-Release/bin/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtQuick.framework/Versions/A/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtQmlModels.framework/Versions/A/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtQml.framework/Versions/A/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtOpenGL.framework/Versions/A/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtGui.framework/Versions/A/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtNetwork.framework/Versions/A/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtCore.framework/Versions/A/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Documents/ScreenPlay-vcpkg/installed/x64-osx/lib/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Documents/build-ScreenPlay-ScreenPlay_Qt_6_2_1_clang_64bit-Release/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtWebSockets.framework/Versions/A/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtSvg.framework/Versions/A/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtWidgets.framework/Versions/A/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtWebEngineQuick.framework/Versions/A/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtWebEngineCore.framework/Versions/A/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtWebChannel.framework/Versions/A/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtPositioning.framework/Versions/A/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Documents/build-ScreenPlay-ScreenPlay_Qt_6_2_1_clang_64bit-Release/bin/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Documents/build-ScreenPlay-ScreenPlay_Qt_6_2_1_clang_64bit-Release/bin/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtCore.framework/Versions/A/../../../libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/libScreenPlayWorkshop.dylib' (no such file),
 '/usr/local/lib/libScreenPlayWorkshop.dylib' (no such file),
 '/usr/lib/libScreenPlayWorkshop.dylib' (no such file))"

      Repo: https://gitlab.com/kelteseth/ScreenPlay
      CMake file: https://gitlab.com/kelteseth/ScreenPlay/-/blob/master/ScreenPlayWorkshop/CMakeLists.txt#L53

      1 Reply Last reply Reply Quote 0
      • SGaist
        SGaist Lifetime Qt Champion last edited by

        Hi,

        Shouldn't that library be stored in the Frameworks sub folder and then its search path be set to @rpath/../Frameworks ?

        Interested in AI ? www.idiap.ch
        Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

        1 Reply Last reply Reply Quote 1
        • Q
          QKelteseth last edited by QKelteseth

          @SGaist thanks for the anweser, but none of that worked.

              m_mainWindowEngine->addPluginPath(QGuiApplication::instance()->applicationDirPath());
    m_mainWindowEngine->addPluginPath(QGuiApplication::instance()->applicationDirPath()+"/../Frameworks");
    m_mainWindowEngine->addPluginPath("@rpath/../Frameworks");
    m_mainWindowEngine->addImportPath("@rpath/../Frameworks");
    m_mainWindowEngine->addImportPath(QGuiApplication::instance()->applicationDirPath());
    m_mainWindowEngine->addImportPath(QGuiApplication::instance()->applicationDirPath()+"/../Frameworks");

    qInfo() << m_mainWindowEngine->pluginPathList();
    qInfo() << m_mainWindowEngine->importPathList();
    qInfo() <<  QGuiApplication::instance()->libraryPaths();

          printing:

          "QList(\"\", \"/Users/eli/Documents/build-ScreenPlay-ScreenPlay_Qt_6_2_1_clang_64bit-Release/bin/ScreenPlay.app/Contents/Frameworks\", \"/Users/eli/Documents/build-ScreenPlay-ScreenPlay_Qt_6_2_1_clang_64bit-Release/bin/ScreenPlay.app/Contents/MacOS\", \".\")"
"QList(\"/Users/eli/Documents/build-ScreenPlay-ScreenPlay_Qt_6_2_1_clang_64bit-Release/bin/ScreenPlay.app/Contents/Frameworks\", \"/Users/eli/Documents/build-ScreenPlay-ScreenPlay_Qt_6_2_1_clang_64bit-Release/bin/ScreenPlay.app/Contents/MacOS\", \"qrc:/qt-project.org/imports\", \"/Users/eli/Qt/6.2.1/macos/qml\")"
"QList(\"/Users/eli/Qt/6.2.1/macos/plugins\", \"/Users/eli/Documents/build-ScreenPlay-ScreenPlay_Qt_6_2_1_clang_64bit-Release/bin/ScreenPlay.app/Contents/MacOS\")"

          I now copied the files in every folder like:

          • /ScreenPlay.app/Contents/MacOS\
          • /ScreenPlay.app/Contents/MacOS\Workshop
          • /ScreenPlay.app/Contents/Framworks\Workshop

          It only works if I place the third party dylib besides ScreenPlay.app location. This is only since my upgrade to Qt 6.2

          Content of the Workshop folder:

          ScreenPlayWorkshop.qmltypes
libScreenPlayWorkshop.dylib
libScreenPlayWorkshopplugin.dylib
libsteam_api.dylib # <- Only works if this file is in the same folder as ScreenPlay.app
libScreenPlayWorkshopplugin.a
libSteamSDK.a
qmldir

          When loading the qml plugin:

          "qrc:/ScreenPlay/qml/Workshop/SteamWorkshop.qml:6:1: Die Bibliothek /Users/eli/Documents/build-ScreenPlay-ScreenPlay_Qt_6_2_1_clang_64bit-Release/bin/ScreenPlay.app/Contents/MacOS/Workshop/libScreenPlayWorkshopplugin.dylib kann nicht geladen werden: (dlopen(/Users/eli/Documents/build-ScreenPlay-ScreenPlay_Qt_6_2_1_clang_64bit-Release/bin/ScreenPlay.app/Contents/MacOS/Workshop/libScreenPlayWorkshopplugin.dylib, 0x0085): Library not loaded: @rpath/libScreenPlayWorkshop.dylib\n  Referenced from: /Users/eli/Documents/build-ScreenPlay-ScreenPlay_Qt_6_2_1_clang_64bit-Release/bin/ScreenPlay.app/Contents/MacOS/Workshop/libScreenPlayWorkshopplugin.dylib\n  Reason: tried: '/Users/eli/Documents/build-ScreenPlay-ScreenPlay_Qt_6_2_1_clang_64bit-Release/bin/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtQuick.framework/Versions/A/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtQmlModels.framework/Versions/A/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtQml.framework/Versions/A/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtOpenGL.framework/Versions/A/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtGui.framework/Versions/A/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtNetwork.framework/Versions/A/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtCore.framework/Versions/A/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Documents/ScreenPlay-vcpkg/installed/x64-osx/lib/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Documents/build-ScreenPlay-ScreenPlay_Qt_6_2_1_clang_64bit-Release/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtWebSockets.framework/Versions/A/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtSvg.framework/Versions/A/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtWidgets.framework/Versions/A/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtWebEngineQuick.framework/Versions/A/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtWebEngineCore.framework/Versions/A/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtWebChannel.framework/Versions/A/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtPositioning.framework/Versions/A/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Documents/build-ScreenPlay-ScreenPlay_Qt_6_2_1_clang_64bit-Release/bin/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Documents/build-ScreenPlay-ScreenPlay_Qt_6_2_1_clang_64bit-Release/bin/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/QtCore.framework/Versions/A/../../../libScreenPlayWorkshop.dylib' (no such file),
 '/Users/eli/Qt/6.2.1/macos/lib/libScreenPlayWorkshop.dylib' (no such file),
 '/usr/local/lib/libScreenPlayWorkshop.dylib' (no such file),
 '/usr/lib/libScreenPlayWorkshop.dylib' (no such file))"
          1 Reply Last reply Reply Quote 0
          • SGaist
            SGaist Lifetime Qt Champion last edited by

            Did you use macdeployqt on your app bundle ?

            Interested in AI ? www.idiap.ch
            Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

            Q 1 Reply Last reply Reply Quote 0
            • Q
              QKelteseth @SGaist last edited by

              @SGaist isn't macdeployqt only for qt libraries?

              artwaw SGaist 2 Replies Last reply Reply Quote 0
              • artwaw
                artwaw @QKelteseth last edited by

                @QKelteseth in the terminal, please navigate inside your bundle where the main executable resides (ScreenPlay.app/Contents/MacOS) and run otool -L <your_exe_name> - this will print you what shared libraries are linked to that executable and where do they are expected.

                You should run macdeployqt also when using qml (if in doubt run macdeployqt --help).

                if you need to adjust linked paths in your executable in the macOS folder of your bundle then the tool install_name_tool is your friend.

                For more information please re-read.

                Kind Regards,
                Artur

                1 Reply Last reply Reply Quote 0
                • SGaist
                  SGaist Lifetime Qt Champion @QKelteseth last edited by

                  @QKelteseth said in MacOS dylib plugin loading path changes from Qt 5.15 to Qt 6.2:

                  @SGaist isn't macdeployqt only for qt libraries?

                  It is to be used when you want to prepare your app bundle for deployment.

                  Interested in AI ? www.idiap.ch
                  Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                  1 Reply Last reply Reply Quote 0
                  • Q
                    QKelteseth last edited by

                    @artwaw @SGaist I think it works now if I place it in the root Frameworks folder. Using ottol on the lib printed:

                    Load command 12
          cmd LC_LOAD_DYLIB
      cmdsize 56
         name @loader_path/libsteam_api.dylib (offset 24)
   time stamp 2 Thu Jan  1 01:00:02 1970
      current version 1.0.0
compatibility version 1.0.0
Load command 13
          cmd LC_LOAD_DYLIB
      cmdsize 72
         name @rpath/QtQuick.framework/Versions/A/QtQuick (offset 24)
   time stamp 2 Thu Jan  1 01:00:02 1970
      current version 6.2.1
compatibility version 6.0.0
Load command 14

                    Thanks for your help! Have a great weekend <3

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