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  4. how to fix linker error in eclipse on linux
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how to fix linker error in eclipse on linux

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  • M micha_eleric

    @jsulm said in how to fix linker error in eclipse on linux:

    find /usr/lib -name qt5

    michaeleric@michaeleric-C7B250-CB-ML:/usr/lib$ find -name qt5
    ./qt5
    ./x86_64-linux-gnu/qt5
    michaeleric@michaeleric-C7B250-CB-ML:/usr/lib$ cd /
    michaeleric@michaeleric-C7B250-CB-ML:/$ cd /usr/lib64
    michaeleric@michaeleric-C7B250-CB-ML:/usr/lib64$ find -name qt5
    michaeleric@michaeleric-C7B250-CB-ML:/usr/lib64$

    jsulmJ Offline
    jsulmJ Offline
    jsulm
    Lifetime Qt Champion
    wrote on last edited by
    #17

    @micha_eleric Please read again what I suggested (hint: * is important)...

    https://forum.qt.io/topic/113070/qt-code-of-conduct

    M 1 Reply Last reply
    0
    • jsulmJ jsulm

      @micha_eleric Please read again what I suggested (hint: * is important)...

      M Offline
      M Offline
      micha_eleric
      wrote on last edited by
      #18

      @jsulm the * was used, copied, pasted, but did not show on post.

      jsulmJ JonBJ 2 Replies Last reply
      0
      • M micha_eleric

        @jsulm the * was used, copied, pasted, but did not show on post.

        jsulmJ Offline
        jsulmJ Offline
        jsulm
        Lifetime Qt Champion
        wrote on last edited by
        #19

        @micha_eleric Can you please answer questions?
        I asked before: What exactly? Which qt5 packages?

        https://forum.qt.io/topic/113070/qt-code-of-conduct

        M 1 Reply Last reply
        0
        • jsulmJ jsulm

          @micha_eleric Can you please answer questions?
          I asked before: What exactly? Which qt5 packages?

          M Offline
          M Offline
          micha_eleric
          wrote on last edited by
          #20

          @jsulm sudo apt-get install qt5-default
          from:
          https://wiki.qt.io/Install_Qt_5_on_Ubuntu

          jsulmJ 1 Reply Last reply
          0
          • M micha_eleric

            @jsulm sudo apt-get install qt5-default
            from:
            https://wiki.qt.io/Install_Qt_5_on_Ubuntu

            jsulmJ Offline
            jsulmJ Offline
            jsulm
            Lifetime Qt Champion
            wrote on last edited by
            #21

            @micha_eleric On my Ubuntu machine Qt5 libs are in /lib/x86_64-linux-gnu
            Like /lib/x86_64-linux-gnu/libQt5Widgets.so.5

            https://forum.qt.io/topic/113070/qt-code-of-conduct

            1 Reply Last reply
            0
            • M micha_eleric

              @jsulm the * was used, copied, pasted, but did not show on post.

              JonBJ Offline
              JonBJ Offline
              JonB
              wrote on last edited by JonB
              #22

              @micha_eleric said in how to fix linker error in eclipse on linux:

              @jsulm the * was used, copied, pasted, but did not show on post.

              find /usr/lib -name *qt5*
find /usr/lib64 -name *qt5*

              You must quote these from the shell's expansion:

              find /usr/lib -name '*Qt5*'
find /usr/lib64 -name '*Qt5*'

              Or you might find this useful:

              locate Qt5
              jsulmJ 1 Reply Last reply
              1
              • JonBJ JonB

                @micha_eleric said in how to fix linker error in eclipse on linux:

                @jsulm the * was used, copied, pasted, but did not show on post.

                find /usr/lib -name *qt5*
find /usr/lib64 -name *qt5*

                You must quote these from the shell's expansion:

                find /usr/lib -name '*Qt5*'
find /usr/lib64 -name '*Qt5*'

                Or you might find this useful:

                locate Qt5
                jsulmJ Offline
                jsulmJ Offline
                jsulm
                Lifetime Qt Champion
                wrote on last edited by
                #23

                @JonB It is Qt not qt in lib names, so was my mistake

                https://forum.qt.io/topic/113070/qt-code-of-conduct

                JonBJ M 2 Replies Last reply
                0
                • jsulmJ jsulm

                  @JonB It is Qt not qt in lib names, so was my mistake

                  JonBJ Offline
                  JonBJ Offline
                  JonB
                  wrote on last edited by JonB
                  #24

                  @jsulm
                  I have edited my response to use Qt5. But the quoting is still necessary!? https://man7.org/linux/man-pages/man1/find.1.html :

                  The filename matching is performed
                  with the use of the fnmatch(3) library function. Don't
                  forget to enclose the pattern in quotes in order to
                  protect it from expansion by the shell.

                  jsulmJ 1 Reply Last reply
                  0
                  • jsulmJ jsulm

                    @JonB It is Qt not qt in lib names, so was my mistake

                    M Offline
                    M Offline
                    micha_eleric
                    wrote on last edited by
                    #25

                    @jsulm michaeleric@michaeleric-C7B250-CB-ML:~$ find /usr/lib -name *Qt5 *
                    /usr/lib/python3/dist-packages/PyQt5
                    /usr/lib/python3/dist-packages/PyQt5-5.14.1.dist-info
                    /usr/lib/x86_64-linux-gnu/libQt5GlxSupport.a
                    /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5MultimediaQuick.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5LinuxAccessibilitySupport.a
                    /usr/lib/x86_64-linux-gnu/libQt5SerialPort.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5SerialPort.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5ThemeSupport.a
                    /usr/lib/x86_64-linux-gnu/libQt5MultimediaQuick.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5XmlPatterns.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5AccessibilitySupport.a
                    /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5Designer.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5Positioning.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5Svg.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5Positioning.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5WebChannel.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5WebKitWidgets.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5QuickTemplates2.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5Test.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5PrintSupport.prl
                    /usr/lib/x86_64-linux-gnu/libQt5EdidSupport.prl
                    /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5Widgets.so
                    /usr/lib/x86_64-linux-gnu/libQt5PlatformCompositorSupport.prl
                    /usr/lib/x86_64-linux-gnu/libQt5SerialPort.so
                    /usr/lib/x86_64-linux-gnu/libQt5Network.so
                    /usr/lib/x86_64-linux-gnu/libQt5Xml.so
                    /usr/lib/x86_64-linux-gnu/libQt5EglFsKmsSupport.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5VulkanSupport.a
                    /usr/lib/x86_64-linux-gnu/libQt5Test.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5ThemeSupport.prl
                    /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5MultimediaWidgets.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5InputSupport.a
                    /usr/lib/x86_64-linux-gnu/libQt5GlxSupport.prl
                    /usr/lib/x86_64-linux-gnu/libQt5Positioning.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5VulkanSupport.prl
                    /usr/lib/x86_64-linux-gnu/libQt5X11Extras.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5SerialPort.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
                    /usr/lib/x86_64-linux-gnu/qt5/mkspecs/features/data/cmake/Qt5PluginTarget.cmake.in
                    /usr/lib/x86_64-linux-gnu/qt5/mkspecs/features/data/cmake/Qt5BasicConfig.cmake.in
                    /usr/lib/x86_64-linux-gnu/qt5/mkspecs/features/data/cmake/Qt5ConfigVersion.cmake.in
                    /usr/lib/x86_64-linux-gnu/libQt5WaylandCompositor.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5OpenGL.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5KmsSupport.prl
                    /usr/lib/x86_64-linux-gnu/libQt5WaylandCompositor.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5WebEngine.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5EventDispatcherSupport.a
                    /usr/lib/x86_64-linux-gnu/libQt5Script.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5Test.prl
                    /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5TextToSpeech
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5TextToSpeech/Qt5TextToSpeech_QTextToSpeechEngineFlite.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5OpenGL
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5OpenGL/Qt5OpenGLConfig.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5OpenGL/Qt5OpenGLConfigVersion.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5PrintSupport
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5PrintSupport/Qt5PrintSupportConfigVersion.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5PrintSupport/Qt5PrintSupport_QCupsPrinterSupportPlugin.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5PrintSupport/Qt5PrintSupportConfig.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Sql
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Sql/Qt5SqlConfig.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Sql/Qt5SqlConfigVersion.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5OpenGLExtensions
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5OpenGLExtensions/Qt5OpenGLExtensionsConfigVersion.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5OpenGLExtensions/Qt5OpenGLExtensionsConfig.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QEvdevMousePlugin.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QTuioTouchPlugin.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QEvdevKeyboardPlugin.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QXcbIntegrationPlugin.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QEglFSKmsGbmIntegrationPlugin.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5GuiConfigExtras.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5GuiConfigVersion.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QXcbEglIntegrationPlugin.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QEglFSKmsEglDeviceIntegrationPlugin.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QComposePlatformInputContextPlugin.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QIbusPlatformInputContextPlugin.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QVncIntegrationPlugin.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QEvdevTouchScreenPlugin.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QXcbGlxIntegrationPlugin.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QEvdevTabletPlugin.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QEglFSX11IntegrationPlugin.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QEglFSEmulatorIntegrationPlugin.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QGifPlugin.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QEglFSIntegrationPlugin.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QMinimalIntegrationPlugin.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QOffscreenIntegrationPlugin.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QICOPlugin.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QMinimalEglIntegrationPlugin.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QLinuxFbIntegrationPlugin.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QLibInputPlugin.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QJpegPlugin.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5GuiConfig.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5SerialPort
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5SerialPort/Qt5SerialPortConfig.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5SerialPort/Qt5SerialPortConfigVersion.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Network
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Network/Qt5Network_QGenericEnginePlugin.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Network/Qt5NetworkConfig.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Network/Qt5Network_QNetworkManagerEnginePlugin.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Network/Qt5Network_QConnmanEnginePlugin.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Network/Qt5NetworkConfigVersion.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Core
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Core/Qt5CTestMacros.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Core/Qt5CoreConfig.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Core/Qt5CoreMacros.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Core/Qt5CoreConfigExtrasMkspecDir.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Core/Qt5CoreConfigVersion.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Core/Qt5CoreConfigExtras.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Widgets
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Widgets/Qt5WidgetsMacros.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Widgets/Qt5WidgetsConfigVersion.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Widgets/Qt5WidgetsConfigExtras.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Widgets/Qt5WidgetsConfig.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Test
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Test/Qt5TestConfigVersion.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Test/Qt5TestConfigExtras.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Test/Qt5TestConfig.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Concurrent
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Concurrent/Qt5ConcurrentConfigVersion.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Concurrent/Qt5ConcurrentConfig.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5DBus
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5DBus/Qt5DBusConfig.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5DBus/Qt5DBusConfigVersion.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5DBus/Qt5DBusMacros.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5DBus/Qt5DBusConfigExtras.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Xml
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Xml/Qt5XmlConfig.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5Xml/Qt5XmlConfigVersion.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5/Qt5ConfigVersion.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5/Qt5ModuleLocation.cmake
                    /usr/lib/x86_64-linux-gnu/cmake/Qt5/Qt5Config.cmake
                    /usr/lib/x86_64-linux-gnu/pkgconfig/Qt5Xml.pc
                    /usr/lib/x86_64-linux-gnu/pkgconfig/Qt5Widgets.pc
                    /usr/lib/x86_64-linux-gnu/pkgconfig/Qt5Test.pc
                    /usr/lib/x86_64-linux-gnu/pkgconfig/Qt5Sql.pc
                    /usr/lib/x86_64-linux-gnu/pkgconfig/Qt5Core.pc
                    /usr/lib/x86_64-linux-gnu/pkgconfig/Qt5SerialPort.pc
                    /usr/lib/x86_64-linux-gnu/pkgconfig/Qt5Concurrent.pc
                    /usr/lib/x86_64-linux-gnu/pkgconfig/Qt5Gui.pc
                    /usr/lib/x86_64-linux-gnu/pkgconfig/Qt5Network.pc
                    /usr/lib/x86_64-linux-gnu/pkgconfig/Qt5DBus.pc
                    /usr/lib/x86_64-linux-gnu/pkgconfig/Qt5PrintSupport.pc
                    /usr/lib/x86_64-linux-gnu/pkgconfig/Qt5OpenGLExtensions.pc
                    /usr/lib/x86_64-linux-gnu/pkgconfig/Qt5OpenGL.pc
                    /usr/lib/x86_64-linux-gnu/libQt5EglFSDeviceIntegration.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5Xml.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5MultimediaGstTools.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5PrintSupport.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5WebEngineWidgets.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5HunspellInputMethod.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5Svg.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5MultimediaGstTools.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5EglFSDeviceIntegration.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5Gui.prl
                    /usr/lib/x86_64-linux-gnu/libQt5QuickWidgets.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5DeviceDiscoverySupport.prl
                    /usr/lib/x86_64-linux-gnu/libQt5Sql.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5Concurrent.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5EventDispatcherSupport.prl
                    /usr/lib/x86_64-linux-gnu/libQt5Help.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5Network.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5Multimedia.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5Sql.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5OpenGL.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5WebEngineWidgets.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so
                    /usr/lib/x86_64-linux-gnu/libQt5WebEngine.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5QuickControls2.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5QuickControls2.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5XmlPatterns.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5Xml.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5EglSupport.a
                    /usr/lib/x86_64-linux-gnu/libQt5Concurrent.so
                    /usr/lib/x86_64-linux-gnu/libQt5DBus.prl
                    /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5TextToSpeech.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5Xml.prl
                    /usr/lib/x86_64-linux-gnu/libQt5AccessibilitySupport.prl
                    /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5PlatformCompositorSupport.a
                    /usr/lib/x86_64-linux-gnu/libQt5WaylandCompositor.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5Core.prl
                    /usr/lib/x86_64-linux-gnu/libQt5Core.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5FbSupport.prl
                    /usr/lib/x86_64-linux-gnu/libQt5Script.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5Help.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5ServiceSupport.a
                    /usr/lib/x86_64-linux-gnu/libQt5VirtualKeyboard.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5Help.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5OpenGL.prl
                    /usr/lib/x86_64-linux-gnu/libQt5Test.so
                    /usr/lib/x86_64-linux-gnu/libQt5PrintSupport.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5MultimediaGstTools.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5WebEngineWidgets.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5Designer.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5WaylandClient.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5Network.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5VirtualKeyboard.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5FontDatabaseSupport.a
                    /usr/lib/x86_64-linux-gnu/libQt5QuickTemplates2.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5PrintSupport.so
                    /usr/lib/x86_64-linux-gnu/libQt5Sql.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5QuickTemplates2.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5EglFsKmsSupport.prl
                    /usr/lib/x86_64-linux-gnu/libQt5VirtualKeyboard.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5EglFsKmsSupport.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5Network.prl
                    /usr/lib/x86_64-linux-gnu/libQt5WaylandClient.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5QuickWidgets.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5WaylandClient.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5HunspellInputMethod.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5Gui.so
                    /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5HunspellInputMethod.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5Sensors.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5EglFSDeviceIntegration.so
                    /usr/lib/x86_64-linux-gnu/libQt5Xml.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5Concurrent.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5TextToSpeech.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5WebEngine.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5WebChannel.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5EglFsKmsSupport.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5Core.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5Concurrent.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5Core.so
                    /usr/lib/x86_64-linux-gnu/libQt5MultimediaWidgets.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5EglFsKmsSupport.so
                    /usr/lib/x86_64-linux-gnu/libQt5Sql.so
                    /usr/lib/x86_64-linux-gnu/libQt5EdidSupport.a
                    /usr/lib/x86_64-linux-gnu/libQt5DeviceDiscoverySupport.a
                    /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5.212.0
                    /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5X11Extras.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5QuickControls2.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5InputSupport.prl
                    /usr/lib/x86_64-linux-gnu/libQt5MultimediaQuick.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5Test.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5FontDatabaseSupport.prl
                    /usr/lib/x86_64-linux-gnu/libQt5OpenGLExtensions.prl
                    /usr/lib/x86_64-linux-gnu/libQt5SerialPort.prl
                    /usr/lib/x86_64-linux-gnu/libQt5Sql.prl
                    /usr/lib/x86_64-linux-gnu/libQt5XmlPatterns.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5Sensors.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5MultimediaWidgets.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.prl
                    /usr/lib/x86_64-linux-gnu/libQt5WebChannel.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5Svg.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5Multimedia.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5WebKitWidgets.so.5.212.0
                    /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5Concurrent.prl
                    /usr/lib/x86_64-linux-gnu/libQt5Sensors.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5FbSupport.a
                    /usr/lib/x86_64-linux-gnu/libQt5Designer.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5EglFSDeviceIntegration.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5ServiceSupport.prl
                    /usr/lib/x86_64-linux-gnu/libQt5OpenGLExtensions.a
                    /usr/lib/x86_64-linux-gnu/libQt5QuickWidgets.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5Widgets.prl
                    /usr/lib/x86_64-linux-gnu/libQt5Multimedia.so.5.12.8
                    /usr/lib/x86_64-linux-gnu/libQt5LinuxAccessibilitySupport.prl
                    /usr/lib/x86_64-linux-gnu/libQt5X11Extras.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5TextToSpeech.so.5.12
                    /usr/lib/x86_64-linux-gnu/libQt5DBus.so
                    /usr/lib/x86_64-linux-gnu/libQt5OpenGL.so
                    /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5PrintSupport.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5EglFSDeviceIntegration.prl
                    /usr/lib/x86_64-linux-gnu/libQt5KmsSupport.a
                    /usr/lib/x86_64-linux-gnu/libQt5OpenGL.so.5
                    /usr/lib/x86_64-linux-gnu/libQt5EglSupport.prl
                    /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5.12
                    michaeleric@michaeleric-C7B250-CB-ML:~$

                    jsulmJ 1 Reply Last reply
                    0
                    • M micha_eleric

                      @jsulm michaeleric@michaeleric-C7B250-CB-ML:~$ find /usr/lib -name *Qt5 *
                      /usr/lib/python3/dist-packages/PyQt5
                      /usr/lib/python3/dist-packages/PyQt5-5.14.1.dist-info
                      /usr/lib/x86_64-linux-gnu/libQt5GlxSupport.a
                      /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5MultimediaQuick.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5LinuxAccessibilitySupport.a
                      /usr/lib/x86_64-linux-gnu/libQt5SerialPort.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5SerialPort.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5ThemeSupport.a
                      /usr/lib/x86_64-linux-gnu/libQt5MultimediaQuick.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5XmlPatterns.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5AccessibilitySupport.a
                      /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5Designer.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5Positioning.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5Svg.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5Positioning.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5WebChannel.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5WebKitWidgets.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5QuickTemplates2.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5Test.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5PrintSupport.prl
                      /usr/lib/x86_64-linux-gnu/libQt5EdidSupport.prl
                      /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5Widgets.so
                      /usr/lib/x86_64-linux-gnu/libQt5PlatformCompositorSupport.prl
                      /usr/lib/x86_64-linux-gnu/libQt5SerialPort.so
                      /usr/lib/x86_64-linux-gnu/libQt5Network.so
                      /usr/lib/x86_64-linux-gnu/libQt5Xml.so
                      /usr/lib/x86_64-linux-gnu/libQt5EglFsKmsSupport.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5VulkanSupport.a
                      /usr/lib/x86_64-linux-gnu/libQt5Test.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5ThemeSupport.prl
                      /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5MultimediaWidgets.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5InputSupport.a
                      /usr/lib/x86_64-linux-gnu/libQt5GlxSupport.prl
                      /usr/lib/x86_64-linux-gnu/libQt5Positioning.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5VulkanSupport.prl
                      /usr/lib/x86_64-linux-gnu/libQt5X11Extras.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5SerialPort.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
                      /usr/lib/x86_64-linux-gnu/qt5/mkspecs/features/data/cmake/Qt5PluginTarget.cmake.in
                      /usr/lib/x86_64-linux-gnu/qt5/mkspecs/features/data/cmake/Qt5BasicConfig.cmake.in
                      /usr/lib/x86_64-linux-gnu/qt5/mkspecs/features/data/cmake/Qt5ConfigVersion.cmake.in
                      /usr/lib/x86_64-linux-gnu/libQt5WaylandCompositor.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5OpenGL.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5KmsSupport.prl
                      /usr/lib/x86_64-linux-gnu/libQt5WaylandCompositor.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5WebEngine.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5EventDispatcherSupport.a
                      /usr/lib/x86_64-linux-gnu/libQt5Script.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5Test.prl
                      /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5TextToSpeech
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5TextToSpeech/Qt5TextToSpeech_QTextToSpeechEngineFlite.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5OpenGL
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5OpenGL/Qt5OpenGLConfig.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5OpenGL/Qt5OpenGLConfigVersion.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5PrintSupport
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5PrintSupport/Qt5PrintSupportConfigVersion.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5PrintSupport/Qt5PrintSupport_QCupsPrinterSupportPlugin.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5PrintSupport/Qt5PrintSupportConfig.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Sql
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Sql/Qt5SqlConfig.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Sql/Qt5SqlConfigVersion.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5OpenGLExtensions
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5OpenGLExtensions/Qt5OpenGLExtensionsConfigVersion.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5OpenGLExtensions/Qt5OpenGLExtensionsConfig.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QEvdevMousePlugin.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QTuioTouchPlugin.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QEvdevKeyboardPlugin.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QXcbIntegrationPlugin.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QEglFSKmsGbmIntegrationPlugin.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5GuiConfigExtras.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5GuiConfigVersion.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QXcbEglIntegrationPlugin.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QEglFSKmsEglDeviceIntegrationPlugin.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QComposePlatformInputContextPlugin.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QIbusPlatformInputContextPlugin.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QVncIntegrationPlugin.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QEvdevTouchScreenPlugin.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QXcbGlxIntegrationPlugin.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QEvdevTabletPlugin.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QEglFSX11IntegrationPlugin.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QEglFSEmulatorIntegrationPlugin.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QGifPlugin.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QEglFSIntegrationPlugin.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QMinimalIntegrationPlugin.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QOffscreenIntegrationPlugin.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QICOPlugin.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QMinimalEglIntegrationPlugin.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QLinuxFbIntegrationPlugin.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QLibInputPlugin.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5Gui_QJpegPlugin.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Gui/Qt5GuiConfig.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5SerialPort
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5SerialPort/Qt5SerialPortConfig.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5SerialPort/Qt5SerialPortConfigVersion.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Network
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Network/Qt5Network_QGenericEnginePlugin.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Network/Qt5NetworkConfig.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Network/Qt5Network_QNetworkManagerEnginePlugin.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Network/Qt5Network_QConnmanEnginePlugin.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Network/Qt5NetworkConfigVersion.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Core
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Core/Qt5CTestMacros.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Core/Qt5CoreConfig.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Core/Qt5CoreMacros.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Core/Qt5CoreConfigExtrasMkspecDir.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Core/Qt5CoreConfigVersion.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Core/Qt5CoreConfigExtras.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Widgets
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Widgets/Qt5WidgetsMacros.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Widgets/Qt5WidgetsConfigVersion.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Widgets/Qt5WidgetsConfigExtras.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Widgets/Qt5WidgetsConfig.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Test
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Test/Qt5TestConfigVersion.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Test/Qt5TestConfigExtras.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Test/Qt5TestConfig.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Concurrent
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Concurrent/Qt5ConcurrentConfigVersion.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Concurrent/Qt5ConcurrentConfig.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5DBus
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5DBus/Qt5DBusConfig.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5DBus/Qt5DBusConfigVersion.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5DBus/Qt5DBusMacros.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5DBus/Qt5DBusConfigExtras.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Xml
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Xml/Qt5XmlConfig.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5Xml/Qt5XmlConfigVersion.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5/Qt5ConfigVersion.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5/Qt5ModuleLocation.cmake
                      /usr/lib/x86_64-linux-gnu/cmake/Qt5/Qt5Config.cmake
                      /usr/lib/x86_64-linux-gnu/pkgconfig/Qt5Xml.pc
                      /usr/lib/x86_64-linux-gnu/pkgconfig/Qt5Widgets.pc
                      /usr/lib/x86_64-linux-gnu/pkgconfig/Qt5Test.pc
                      /usr/lib/x86_64-linux-gnu/pkgconfig/Qt5Sql.pc
                      /usr/lib/x86_64-linux-gnu/pkgconfig/Qt5Core.pc
                      /usr/lib/x86_64-linux-gnu/pkgconfig/Qt5SerialPort.pc
                      /usr/lib/x86_64-linux-gnu/pkgconfig/Qt5Concurrent.pc
                      /usr/lib/x86_64-linux-gnu/pkgconfig/Qt5Gui.pc
                      /usr/lib/x86_64-linux-gnu/pkgconfig/Qt5Network.pc
                      /usr/lib/x86_64-linux-gnu/pkgconfig/Qt5DBus.pc
                      /usr/lib/x86_64-linux-gnu/pkgconfig/Qt5PrintSupport.pc
                      /usr/lib/x86_64-linux-gnu/pkgconfig/Qt5OpenGLExtensions.pc
                      /usr/lib/x86_64-linux-gnu/pkgconfig/Qt5OpenGL.pc
                      /usr/lib/x86_64-linux-gnu/libQt5EglFSDeviceIntegration.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5Xml.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5MultimediaGstTools.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5PrintSupport.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5WebEngineWidgets.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5HunspellInputMethod.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5Svg.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5MultimediaGstTools.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5EglFSDeviceIntegration.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5Gui.prl
                      /usr/lib/x86_64-linux-gnu/libQt5QuickWidgets.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5DeviceDiscoverySupport.prl
                      /usr/lib/x86_64-linux-gnu/libQt5Sql.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5Concurrent.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5EventDispatcherSupport.prl
                      /usr/lib/x86_64-linux-gnu/libQt5Help.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5Network.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5Multimedia.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5Sql.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5OpenGL.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5WebEngineWidgets.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so
                      /usr/lib/x86_64-linux-gnu/libQt5WebEngine.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5QuickControls2.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5QuickControls2.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5XmlPatterns.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5Xml.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5EglSupport.a
                      /usr/lib/x86_64-linux-gnu/libQt5Concurrent.so
                      /usr/lib/x86_64-linux-gnu/libQt5DBus.prl
                      /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5TextToSpeech.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5Xml.prl
                      /usr/lib/x86_64-linux-gnu/libQt5AccessibilitySupport.prl
                      /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5PlatformCompositorSupport.a
                      /usr/lib/x86_64-linux-gnu/libQt5WaylandCompositor.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5Core.prl
                      /usr/lib/x86_64-linux-gnu/libQt5Core.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5FbSupport.prl
                      /usr/lib/x86_64-linux-gnu/libQt5Script.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5Help.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5ServiceSupport.a
                      /usr/lib/x86_64-linux-gnu/libQt5VirtualKeyboard.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5Help.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5OpenGL.prl
                      /usr/lib/x86_64-linux-gnu/libQt5Test.so
                      /usr/lib/x86_64-linux-gnu/libQt5PrintSupport.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5MultimediaGstTools.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5WebEngineWidgets.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5Designer.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5WaylandClient.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5Network.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5VirtualKeyboard.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5FontDatabaseSupport.a
                      /usr/lib/x86_64-linux-gnu/libQt5QuickTemplates2.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5PrintSupport.so
                      /usr/lib/x86_64-linux-gnu/libQt5Sql.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5QuickTemplates2.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5EglFsKmsSupport.prl
                      /usr/lib/x86_64-linux-gnu/libQt5VirtualKeyboard.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5EglFsKmsSupport.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5Network.prl
                      /usr/lib/x86_64-linux-gnu/libQt5WaylandClient.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5QuickWidgets.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5WaylandClient.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5HunspellInputMethod.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5Gui.so
                      /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5HunspellInputMethod.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5Sensors.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5EglFSDeviceIntegration.so
                      /usr/lib/x86_64-linux-gnu/libQt5Xml.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5Concurrent.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5TextToSpeech.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5WebEngine.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5WebChannel.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5EglFsKmsSupport.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5Core.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5Concurrent.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5Core.so
                      /usr/lib/x86_64-linux-gnu/libQt5MultimediaWidgets.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5EglFsKmsSupport.so
                      /usr/lib/x86_64-linux-gnu/libQt5Sql.so
                      /usr/lib/x86_64-linux-gnu/libQt5EdidSupport.a
                      /usr/lib/x86_64-linux-gnu/libQt5DeviceDiscoverySupport.a
                      /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5.212.0
                      /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5X11Extras.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5QuickControls2.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5InputSupport.prl
                      /usr/lib/x86_64-linux-gnu/libQt5MultimediaQuick.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5Test.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5FontDatabaseSupport.prl
                      /usr/lib/x86_64-linux-gnu/libQt5OpenGLExtensions.prl
                      /usr/lib/x86_64-linux-gnu/libQt5SerialPort.prl
                      /usr/lib/x86_64-linux-gnu/libQt5Sql.prl
                      /usr/lib/x86_64-linux-gnu/libQt5XmlPatterns.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5Sensors.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5MultimediaWidgets.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.prl
                      /usr/lib/x86_64-linux-gnu/libQt5WebChannel.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5Svg.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5Multimedia.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5WebKitWidgets.so.5.212.0
                      /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5Concurrent.prl
                      /usr/lib/x86_64-linux-gnu/libQt5Sensors.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5FbSupport.a
                      /usr/lib/x86_64-linux-gnu/libQt5Designer.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5EglFSDeviceIntegration.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5ServiceSupport.prl
                      /usr/lib/x86_64-linux-gnu/libQt5OpenGLExtensions.a
                      /usr/lib/x86_64-linux-gnu/libQt5QuickWidgets.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5Widgets.prl
                      /usr/lib/x86_64-linux-gnu/libQt5Multimedia.so.5.12.8
                      /usr/lib/x86_64-linux-gnu/libQt5LinuxAccessibilitySupport.prl
                      /usr/lib/x86_64-linux-gnu/libQt5X11Extras.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5TextToSpeech.so.5.12
                      /usr/lib/x86_64-linux-gnu/libQt5DBus.so
                      /usr/lib/x86_64-linux-gnu/libQt5OpenGL.so
                      /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5PrintSupport.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5EglFSDeviceIntegration.prl
                      /usr/lib/x86_64-linux-gnu/libQt5KmsSupport.a
                      /usr/lib/x86_64-linux-gnu/libQt5OpenGL.so.5
                      /usr/lib/x86_64-linux-gnu/libQt5EglSupport.prl
                      /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5.12
                      michaeleric@michaeleric-C7B250-CB-ML:~$

                      jsulmJ Offline
                      jsulmJ Offline
                      jsulm
                      Lifetime Qt Champion
                      wrote on last edited by
                      #26

                      @micha_eleric So, now you know in which folder the Qt libs are located

                      https://forum.qt.io/topic/113070/qt-code-of-conduct

                      1 Reply Last reply
                      0
                      • JonBJ JonB

                        @jsulm
                        I have edited my response to use Qt5. But the quoting is still necessary!? https://man7.org/linux/man-pages/man1/find.1.html :

                        The filename matching is performed
                        with the use of the fnmatch(3) library function. Don't
                        forget to enclose the pattern in quotes in order to
                        protect it from expansion by the shell.

                        jsulmJ Offline
                        jsulmJ Offline
                        jsulm
                        Lifetime Qt Champion
                        wrote on last edited by
                        #27

                        @JonB said in how to fix linker error in eclipse on linux:

                        But the quoting is still necessary!?

                        For me both work on Ubuntu with GNU find (both have same amount of matches)

                        https://forum.qt.io/topic/113070/qt-code-of-conduct

                        JonBJ 1 Reply Last reply
                        0
                        • jsulmJ jsulm

                          @JonB said in how to fix linker error in eclipse on linux:

                          But the quoting is still necessary!?

                          For me both work on Ubuntu with GNU find (both have same amount of matches)

                          JonBJ Offline
                          JonBJ Offline
                          JonB
                          wrote on last edited by JonB
                          #28

                          @jsulm
                          Sorry I cannot leave this statement as-is! As we discussed privately, your unquoted behaviour of *Qt* will generate totally different results depending on whether the current directory does or does not contain any filenames matching *Qt*. Which is not what is desired for this search. ALWAYS quote wildcards (*, ?) you are passing to a command like find if you expect it to work correctly robustly.... :)

                          P.S.
                          If anyone does not believe me: before running the command do a touch Qt5 in the directory you run find /usr/lib -name '*Qt5*' versus find /usr/lib -name *Qt5* from., and compare the results...

                          M 1 Reply Last reply
                          2
                          • JonBJ JonB

                            @jsulm
                            Sorry I cannot leave this statement as-is! As we discussed privately, your unquoted behaviour of *Qt* will generate totally different results depending on whether the current directory does or does not contain any filenames matching *Qt*. Which is not what is desired for this search. ALWAYS quote wildcards (*, ?) you are passing to a command like find if you expect it to work correctly robustly.... :)

                            P.S.
                            If anyone does not believe me: before running the command do a touch Qt5 in the directory you run find /usr/lib -name '*Qt5*' versus find /usr/lib -name *Qt5* from., and compare the results...

                            M Offline
                            M Offline
                            micha_eleric
                            wrote on last edited by micha_eleric
                            #29

                            @JonB for me, find /usr/lib -name'*Qt5 *', anr find /usr/lib -name *Qt5 * had same results. [note] no space between 5 and *

                            JonBJ 1 Reply Last reply
                            0
                            • M Offline
                              M Offline
                              micha_eleric
                              wrote on last edited by micha_eleric
                              #30

                              under Properties->C/C++ Build->Settings->Tool Settings->GCC C++ Linker->Libraries->Libraries (-l) /usr/lib/x86_64-linux-gnu
                              /usr/bin/ld: cannot find -l/usr/lib/x86_64-linux-gnu
                              under Properties->C/C++ Build->Settings->Tool Settings->GCC C++ Linker->Libraries->Libraries (-l) /usr/lib/x86_64-linux-gnu/qt5
                              /usr/bin/ld: cannot find -l/usr/lib/x86_64-linux-gnu/qt5

                              both have libraries, but no clue if i have to add a specific file, or just the dir it is in

                              under Properties->C/C++ Build->Settings->Tool Settings->GCC C++ Linker->Libraries->Libraries (-l) /usr/lib/x86_64-linux-gnu/libQtCore
                              /usr/bin/ld: cannot find -l/usr/lib/x86_64-linux-gnu/libQtCore
                              under Properties->C/C++ Build->Settings->Tool Settings->GCC C++ Linker->Libraries->Libraries (-l) /usr/lib/x86_64-linux-gnu/libQtCore.so
                              /usr/bin/ld: cannot find -l/usr/lib/x86_64-linux-gnu/libQtCore.so

                              it can not find a library, so i have to be doing something wrong

                              jsulmJ 1 Reply Last reply
                              0
                              • M Offline
                                M Offline
                                micha_eleric
                                wrote on last edited by
                                #31

                                michaeleric@michaeleric-C7B250-CB-ML:~$ sudo find / -name '*MainWindow *'
                                [sudo] password for michaeleric:
                                /home/michaeleric/eclipse-workspace/GUI/CUi_MainWindow.h
                                find: ‘/run/user/1000/doc’: Permission denied
                                /usr/share/doc/HTML/ca/spectacle/MainWindow.png
                                /usr/share/doc/HTML/uk/spectacle/MainWindow.png
                                /usr/share/doc/HTML/en/spectacle/MainWindow.png
                                /usr/include/qt4/Qt3Support/Q3MainWindow
                                /usr/include/qt4/QtGui/QMainWindow
                                /usr/include/x86_64-linux-gnu/qt5/QtWidgets/QMainWindow
                                michaeleric@michaeleric-C7B250-CB-ML:~$

                                there are no .h files for QMainWindow under Qt5 anywhere, thus why i was using Qt4, and thought Qt4 was installed.
                                error is about undefined reference to `QMainWindow:
                                i am looking around for a needle in a haystack, but dont know what the needle looks like, nor which haystack

                                1 Reply Last reply
                                0
                                • M micha_eleric

                                  under Properties->C/C++ Build->Settings->Tool Settings->GCC C++ Linker->Libraries->Libraries (-l) /usr/lib/x86_64-linux-gnu
                                  /usr/bin/ld: cannot find -l/usr/lib/x86_64-linux-gnu
                                  under Properties->C/C++ Build->Settings->Tool Settings->GCC C++ Linker->Libraries->Libraries (-l) /usr/lib/x86_64-linux-gnu/qt5
                                  /usr/bin/ld: cannot find -l/usr/lib/x86_64-linux-gnu/qt5

                                  both have libraries, but no clue if i have to add a specific file, or just the dir it is in

                                  under Properties->C/C++ Build->Settings->Tool Settings->GCC C++ Linker->Libraries->Libraries (-l) /usr/lib/x86_64-linux-gnu/libQtCore
                                  /usr/bin/ld: cannot find -l/usr/lib/x86_64-linux-gnu/libQtCore
                                  under Properties->C/C++ Build->Settings->Tool Settings->GCC C++ Linker->Libraries->Libraries (-l) /usr/lib/x86_64-linux-gnu/libQtCore.so
                                  /usr/bin/ld: cannot find -l/usr/lib/x86_64-linux-gnu/libQtCore.so

                                  it can not find a library, so i have to be doing something wrong

                                  jsulmJ Offline
                                  jsulmJ Offline
                                  jsulm
                                  Lifetime Qt Champion
                                  wrote on last edited by
                                  #32

                                  @micha_eleric said in how to fix linker error in eclipse on linux:

                                  it can not find a library

                                  Please post the error message.

                                  "there are no .h files for QMainWindow under Qt5 anywhere" - of course there is if you installed qtwidgets module, see https://doc.qt.io/qt-5/qmainwindow.html

                                  I'm wondering: why don't you use a proper build system like qmake or CMake instead hacking around with manual settings?

                                  https://forum.qt.io/topic/113070/qt-code-of-conduct

                                  M 3 Replies Last reply
                                  0
                                  • jsulmJ jsulm

                                    @micha_eleric said in how to fix linker error in eclipse on linux:

                                    it can not find a library

                                    Please post the error message.

                                    "there are no .h files for QMainWindow under Qt5 anywhere" - of course there is if you installed qtwidgets module, see https://doc.qt.io/qt-5/qmainwindow.html

                                    I'm wondering: why don't you use a proper build system like qmake or CMake instead hacking around with manual settings?

                                    M Offline
                                    M Offline
                                    micha_eleric
                                    wrote on last edited by
                                    #33

                                    @jsulm

                                    using eclipse on linux
                                    error, i am mostly sure is an eclipse issue, and not a programming issue.

                                    g++ -L/usr/include/qt4 -L/usr/include/qt4/QtSerialPort -L/usr/include/qt4/QtGui -o "GUI2" ./src/CGUI.o ./src/Main.o
                                    /usr/bin/ld: ./src/CGUI.o: in function CGUI::CGUI()': /home/michaeleric/eclipse-workspace/GUI2/Debug/../src/CGUI.cpp:10: undefined reference toQMainWindow::QMainWindow(QWidget*, QFlagsQt::WindowType)'
                                    /usr/bin/ld: /home/michaeleric/eclipse-workspace/GUI2/Debug/../src/CGUI.cpp:10: undefined reference to vtable for CGUI' /usr/bin/ld: /home/michaeleric/eclipse-workspace/GUI2/Debug/../src/CGUI.cpp:10: undefined reference tovtable for CGUI'
                                    /usr/bin/ld: ./src/CGUI.o: in function CGUI::~CGUI()': /home/michaeleric/eclipse-workspace/GUI2/Debug/../src/CGUI.cpp:15: undefined reference tovtable for CGUI'
                                    /usr/bin/ld: /home/michaeleric/eclipse-workspace/GUI2/Debug/../src/CGUI.cpp:15: undefined reference to vtable for CGUI' /usr/bin/ld: /home/michaeleric/eclipse-workspace/GUI2/Debug/../src/CGUI.cpp:15: undefined reference toQMainWindow::~QMainWindow()'
                                    /usr/bin/ld: ./src/Main.o: in function main': /home/michaeleric/eclipse-workspace/GUI2/Debug/../src/Main.cpp:14: undefined reference toQApplication::QApplication(int&, char**, int)'
                                    /usr/bin/ld: /home/michaeleric/eclipse-workspace/GUI2/Debug/../src/Main.cpp:17: undefined reference to QApplication::exec()' /usr/bin/ld: /home/michaeleric/eclipse-workspace/GUI2/Debug/../src/Main.cpp:14: undefined reference toQApplication::~QApplication()'
                                    /usr/bin/ld: /home/michaeleric/eclipse-workspace/GUI2/Debug/../src/Main.cpp:14: undefined reference to `QApplication::~QApplication()'
                                    collect2: error: ld returned 1 exit status
                                    make: *** [makefile:47: GUI2] Error 1

                                    based on https://forum.qt.io/topic/101400/qt-with-eclipse-c/5 , i added QtCore and QtWidgets, even though there were no errors with #include<>. same errors from compile.

                                    https://stackoverflow.com/questions/6478317/eclipse-undefined-reference says it is a linker error

                                    under Properties->C/C++ Build->Settings->Tool Settings->GCC C++ Linker->command: g++

                                    under Properties->C/C++ Build->Settings->Tool Settings->GCC C++ Linker->Libraries->Libraries (-l) [nothing]

                                    under Properties->C/C++ Build->Settings->Tool Settings->GCC C++ Linker->Libraries->Libraries search path (-L) /usr/include/qt4 /usr/include/qt4/QtWidgets /usr/include/qt4/QtCore /usr/include/qt4/QtSerialPort /usr/include/qt4/QtGui

                                    under Properties->C/C++ Build->Settings->Tool Settings->GCC C++ Linker->Miscellaneous->Linker flags [nothing]

                                    under Properties->C/C++ Build->Settings->Tool Settings->GCC C++ Linker->Miscellaneous->Other options (-Xlinker [option]) [nothing]

                                    under Properties->C/C++ Build->Settings->Tool Settings->GCC C++ Linker->Miscellaneous->Other objects [nothing]

                                    under Properties->C/C++ Build->Settings->Tool Settings->GCC C++ Linker->Shared Library Settings [nothing][nothing][nothing][nothing]

                                    what is suppose to be added, and where?

                                    if:
                                    under Properties->C/C++ Build->Settings->Tool Settings->GCC C++ Linker->Libraries->Libraries (-l) /usr/include/qt4/QtGui
                                    error:
                                    /usr/bin/ld: cannot find -l/usr/include/qt4/QtGui

                                    if:
                                    under Properties->C/C++ Build->Settings->Tool Settings->GCC C++ Linker->Miscellaneous->Other options (-Xlinker [option]) /usr/include/qt4/QtGui
                                    error:
                                    /usr/bin/ld: cannot find /usr/include/qt4/QtGui: file format not recognized

                                    if:
                                    under Properties->C/C++ Build->Settings->Tool Settings->GCC C++ Linker->Miscellaneous->Other objects /usr/include/qt4/QtGui
                                    error:
                                    /usr/bin/ld: cannot find /usr/include/qt4/QtGui: file format not recognized

                                    if it is a virtual function that has to be defined, then what would it be, other than constructor/destructor?

                                    jsulmJ 1 Reply Last reply
                                    0
                                    • jsulmJ jsulm

                                      @micha_eleric said in how to fix linker error in eclipse on linux:

                                      it can not find a library

                                      Please post the error message.

                                      "there are no .h files for QMainWindow under Qt5 anywhere" - of course there is if you installed qtwidgets module, see https://doc.qt.io/qt-5/qmainwindow.html

                                      I'm wondering: why don't you use a proper build system like qmake or CMake instead hacking around with manual settings?

                                      M Offline
                                      M Offline
                                      micha_eleric
                                      wrote on last edited by
                                      #34

                                      @jsulm only "hacking" i am doing, is trying to find the path to the lib

                                      1 Reply Last reply
                                      0
                                      • M micha_eleric

                                        @jsulm

                                        using eclipse on linux
                                        error, i am mostly sure is an eclipse issue, and not a programming issue.

                                        g++ -L/usr/include/qt4 -L/usr/include/qt4/QtSerialPort -L/usr/include/qt4/QtGui -o "GUI2" ./src/CGUI.o ./src/Main.o
                                        /usr/bin/ld: ./src/CGUI.o: in function CGUI::CGUI()': /home/michaeleric/eclipse-workspace/GUI2/Debug/../src/CGUI.cpp:10: undefined reference toQMainWindow::QMainWindow(QWidget*, QFlagsQt::WindowType)'
                                        /usr/bin/ld: /home/michaeleric/eclipse-workspace/GUI2/Debug/../src/CGUI.cpp:10: undefined reference to vtable for CGUI' /usr/bin/ld: /home/michaeleric/eclipse-workspace/GUI2/Debug/../src/CGUI.cpp:10: undefined reference tovtable for CGUI'
                                        /usr/bin/ld: ./src/CGUI.o: in function CGUI::~CGUI()': /home/michaeleric/eclipse-workspace/GUI2/Debug/../src/CGUI.cpp:15: undefined reference tovtable for CGUI'
                                        /usr/bin/ld: /home/michaeleric/eclipse-workspace/GUI2/Debug/../src/CGUI.cpp:15: undefined reference to vtable for CGUI' /usr/bin/ld: /home/michaeleric/eclipse-workspace/GUI2/Debug/../src/CGUI.cpp:15: undefined reference toQMainWindow::~QMainWindow()'
                                        /usr/bin/ld: ./src/Main.o: in function main': /home/michaeleric/eclipse-workspace/GUI2/Debug/../src/Main.cpp:14: undefined reference toQApplication::QApplication(int&, char**, int)'
                                        /usr/bin/ld: /home/michaeleric/eclipse-workspace/GUI2/Debug/../src/Main.cpp:17: undefined reference to QApplication::exec()' /usr/bin/ld: /home/michaeleric/eclipse-workspace/GUI2/Debug/../src/Main.cpp:14: undefined reference toQApplication::~QApplication()'
                                        /usr/bin/ld: /home/michaeleric/eclipse-workspace/GUI2/Debug/../src/Main.cpp:14: undefined reference to `QApplication::~QApplication()'
                                        collect2: error: ld returned 1 exit status
                                        make: *** [makefile:47: GUI2] Error 1

                                        based on https://forum.qt.io/topic/101400/qt-with-eclipse-c/5 , i added QtCore and QtWidgets, even though there were no errors with #include<>. same errors from compile.

                                        https://stackoverflow.com/questions/6478317/eclipse-undefined-reference says it is a linker error

                                        under Properties->C/C++ Build->Settings->Tool Settings->GCC C++ Linker->command: g++

                                        under Properties->C/C++ Build->Settings->Tool Settings->GCC C++ Linker->Libraries->Libraries (-l) [nothing]

                                        under Properties->C/C++ Build->Settings->Tool Settings->GCC C++ Linker->Libraries->Libraries search path (-L) /usr/include/qt4 /usr/include/qt4/QtWidgets /usr/include/qt4/QtCore /usr/include/qt4/QtSerialPort /usr/include/qt4/QtGui

                                        under Properties->C/C++ Build->Settings->Tool Settings->GCC C++ Linker->Miscellaneous->Linker flags [nothing]

                                        under Properties->C/C++ Build->Settings->Tool Settings->GCC C++ Linker->Miscellaneous->Other options (-Xlinker [option]) [nothing]

                                        under Properties->C/C++ Build->Settings->Tool Settings->GCC C++ Linker->Miscellaneous->Other objects [nothing]

                                        under Properties->C/C++ Build->Settings->Tool Settings->GCC C++ Linker->Shared Library Settings [nothing][nothing][nothing][nothing]

                                        what is suppose to be added, and where?

                                        if:
                                        under Properties->C/C++ Build->Settings->Tool Settings->GCC C++ Linker->Libraries->Libraries (-l) /usr/include/qt4/QtGui
                                        error:
                                        /usr/bin/ld: cannot find -l/usr/include/qt4/QtGui

                                        if:
                                        under Properties->C/C++ Build->Settings->Tool Settings->GCC C++ Linker->Miscellaneous->Other options (-Xlinker [option]) /usr/include/qt4/QtGui
                                        error:
                                        /usr/bin/ld: cannot find /usr/include/qt4/QtGui: file format not recognized

                                        if:
                                        under Properties->C/C++ Build->Settings->Tool Settings->GCC C++ Linker->Miscellaneous->Other objects /usr/include/qt4/QtGui
                                        error:
                                        /usr/bin/ld: cannot find /usr/include/qt4/QtGui: file format not recognized

                                        if it is a virtual function that has to be defined, then what would it be, other than constructor/destructor?

                                        jsulmJ Offline
                                        jsulmJ Offline
                                        jsulm
                                        Lifetime Qt Champion
                                        wrote on last edited by jsulm
                                        #35

                                        @micha_eleric said in how to fix linker error in eclipse on linux:

                                        under Properties->C/C++ Build->Settings->Tool Settings->GCC C++ Linker->Libraries->Libraries search path (-L) /usr/include/qt4 /usr/include/qt4/QtWidgets

                                        You are again adding include folder as library folder, why?! I already told you before that you need to set folder containing the libraries and we even figured out what it is (/lib/x86_64-linux-gnu). So, please set proper library folder...

                                        https://forum.qt.io/topic/113070/qt-code-of-conduct

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                                        • jsulmJ jsulm

                                          @micha_eleric said in how to fix linker error in eclipse on linux:

                                          it can not find a library

                                          Please post the error message.

                                          "there are no .h files for QMainWindow under Qt5 anywhere" - of course there is if you installed qtwidgets module, see https://doc.qt.io/qt-5/qmainwindow.html

                                          I'm wondering: why don't you use a proper build system like qmake or CMake instead hacking around with manual settings?

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                                          micha_eleric
                                          wrote on last edited by
                                          #36

                                          @jsulm

                                          "there are no .h files for QMainWindow under Qt5 anywhere" - of course there is if you installed qtwidgets module, see https://doc.qt.io/qt-5/qmainwindow.html

                                          not an install link

                                          jsulmJ 1 Reply Last reply
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