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  4. undefined reference to qt_static _plugin

undefined reference to qt_static _plugin

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qt 5.5staticplugin
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  • N NIXIN
    3 Jan 2019, 11:57

    @jsulm what should I add with QTPLUGIN +=

    because I am creating my own plugin

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    jsulm
    Lifetime Qt Champion
    wrote on 3 Jan 2019, 12:02 last edited by jsulm 1 Mar 2019, 12:03
    #4

    @NIXIN Sorry, my post was wrong.
    "Link your application with your plugin library using LIBS in the .pro file." - so, using LIBS is correct. But you're using it wrongly, it should be:

    LIBS    += -L"/home/uidm9805/Qt Projects/static_plugin_qmake/build/plugin_qmake" -lplugin_qmake
    

    Better to use relative paths, see http://doc.qt.io/qt-5/qtwidgets-tools-plugandpaint-app-example.html

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

    N 1 Reply Last reply 3 Jan 2019, 12:05
    0
    • J jsulm
      3 Jan 2019, 12:02

      @NIXIN Sorry, my post was wrong.
      "Link your application with your plugin library using LIBS in the .pro file." - so, using LIBS is correct. But you're using it wrongly, it should be:

      LIBS    += -L"/home/uidm9805/Qt Projects/static_plugin_qmake/build/plugin_qmake" -lplugin_qmake
      

      Better to use relative paths, see http://doc.qt.io/qt-5/qtwidgets-tools-plugandpaint-app-example.html

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      NIXIN
      wrote on 3 Jan 2019, 12:05 last edited by NIXIN 1 Mar 2019, 12:06
      #5

      @jsulm I tried using LIBS += the way you suggested, however still it is not working...
      getting same errors again

      J 1 Reply Last reply 3 Jan 2019, 12:15
      0
      • N NIXIN
        3 Jan 2019, 12:05

        @jsulm I tried using LIBS += the way you suggested, however still it is not working...
        getting same errors again

        J Offline
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        jsulm
        Lifetime Qt Champion
        wrote on 3 Jan 2019, 12:15 last edited by
        #6

        @NIXIN Can you show your LIBS line from your pro file?

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

        N 1 Reply Last reply 3 Jan 2019, 12:16
        0
        • J jsulm
          3 Jan 2019, 12:15

          @NIXIN Can you show your LIBS line from your pro file?

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          NIXIN
          wrote on 3 Jan 2019, 12:16 last edited by
          #7

          @jsulm

          TEMPLATE = app
          QT      += widgets
          
          HEADERS  = interface.h
          
          SOURCES += main.cpp
          
          #LIBS    += "/home/uidm9805/Qt Projects/static_plugin_qmake/build/plugin_qmake/libplugin_qmake.a"
          
          LIBS    += -L"/home/uidm9805/Qt Projects/static_plugin_qmake/build/plugin_qmake" -lplugin_qmake
          
          J 1 Reply Last reply 3 Jan 2019, 12:18
          0
          • N NIXIN
            3 Jan 2019, 12:16

            @jsulm

            TEMPLATE = app
            QT      += widgets
            
            HEADERS  = interface.h
            
            SOURCES += main.cpp
            
            #LIBS    += "/home/uidm9805/Qt Projects/static_plugin_qmake/build/plugin_qmake/libplugin_qmake.a"
            
            LIBS    += -L"/home/uidm9805/Qt Projects/static_plugin_qmake/build/plugin_qmake" -lplugin_qmake
            
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            jsulm
            Lifetime Qt Champion
            wrote on 3 Jan 2019, 12:18 last edited by
            #8

            @NIXIN You should check the linker call as you have a space in your path which can cause issues (you should avoid spaces in paths).

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

            N 1 Reply Last reply 3 Jan 2019, 12:21
            0
            • J jsulm
              3 Jan 2019, 12:18

              @NIXIN You should check the linker call as you have a space in your path which can cause issues (you should avoid spaces in paths).

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              NIXIN
              wrote on 3 Jan 2019, 12:21 last edited by
              #9

              @jsulm I tried same thing with this example http://doc.qt.io/qt-5/qtwidgets-tools-plugandpaint-app-example.html and its working fine there

              LIBS += "/home/uidm9805/Qt Projects/plugandpaint/build/plugandpaint/plugins/libpnp_basictools.a"
              

              don't know why this project is behaving in odd manner

              J 1 Reply Last reply 3 Jan 2019, 12:24
              0
              • N NIXIN
                3 Jan 2019, 12:21

                @jsulm I tried same thing with this example http://doc.qt.io/qt-5/qtwidgets-tools-plugandpaint-app-example.html and its working fine there

                LIBS += "/home/uidm9805/Qt Projects/plugandpaint/build/plugandpaint/plugins/libpnp_basictools.a"
                

                don't know why this project is behaving in odd manner

                J Offline
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                jsulm
                Lifetime Qt Champion
                wrote on 3 Jan 2019, 12:24 last edited by
                #10

                @NIXIN Is your plug-in really located here: /home/uidm9805/Qt Projects/static_plugin_qmake/build/plugin_qmake? And was it build with exact same compiler and Qt version?

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

                N 1 Reply Last reply 3 Jan 2019, 12:27
                0
                • J jsulm
                  3 Jan 2019, 12:24

                  @NIXIN Is your plug-in really located here: /home/uidm9805/Qt Projects/static_plugin_qmake/build/plugin_qmake? And was it build with exact same compiler and Qt version?

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                  NIXIN
                  wrote on 3 Jan 2019, 12:27 last edited by
                  #11

                  @jsulm yes plugin is located in the given path and compiler versions are same

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                  0
                  • N Offline
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                    NIXIN
                    wrote on 4 Jan 2019, 09:52 last edited by
                    #12

                    can anybody help me with this issue??

                    1 Reply Last reply
                    0
                    • N Offline
                      N Offline
                      NIXIN
                      wrote on 4 Jan 2019, 10:50 last edited by
                      #13

                      After lot of hit and trial, I got the mistake I was doing

                      Q_IMPORT_PLUGIN(plugin_qmake)
                      

                      this line should have the class name of plugin

                      Q_IMPORT_PLUGIN(PluginQmake)
                      

                      now it works fine....

                      1 Reply Last reply
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                      • N Offline
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                        Ni.Sumi
                        wrote on 4 Jan 2019, 15:09 last edited by
                        #14

                        If it's solved, Please set it to "Solved" from unsolved.

                        1 Reply Last reply
                        1

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                        4 Jan 2019, 10:50

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