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Undefined reference to qDebug

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  • A asanka424

    Could you check if you have libQt5*.so in any other place than /home/mistral/Qt/5.5/gcc_64/lib

    A Offline
    A Offline
    ayush_mistral
    wrote on last edited by
    #27

    @asanka424

    Hi,

    There are some common libQt5*.so files also present in the path /usr/lib/x86_64-linux-gnu

    Thanks and Regards
    Ayush

    kshegunovK 1 Reply Last reply
    0
    • A ayush_mistral

      @asanka424

      Hi,

      There are some common libQt5*.so files also present in the path /usr/lib/x86_64-linux-gnu

      Thanks and Regards
      Ayush

      kshegunovK Offline
      kshegunovK Offline
      kshegunov
      Moderators
      wrote on last edited by
      #28

      @ayush_mistral
      Okay, then this: "Make sure you're running the qmake that came with the package you installed, and not a system-wide installed one." is quite relevant.
      Use the qmake that came with the package you installed. You can find it somewhere in the /home/mistral/Qt/.../bin folder. You go to your project, run make clean, then use the correct qmake to create the Makefile anew, and then you make your project again.

      Kind regards.

      Read and abide by the Qt Code of Conduct

      A 1 Reply Last reply
      0
      • kshegunovK kshegunov

        @ayush_mistral
        Okay, then this: "Make sure you're running the qmake that came with the package you installed, and not a system-wide installed one." is quite relevant.
        Use the qmake that came with the package you installed. You can find it somewhere in the /home/mistral/Qt/.../bin folder. You go to your project, run make clean, then use the correct qmake to create the Makefile anew, and then you make your project again.

        Kind regards.

        A Offline
        A Offline
        ayush_mistral
        wrote on last edited by
        #29

        @kshegunov

        Hi I found the qmake executable in the path Qt5.5/gcc_64/bin folder

        Can you please tell me which tab should I change in qt projects tab to provide the path for the appropriate qmake?

        kshegunovK 1 Reply Last reply
        0
        • A ayush_mistral

          @kshegunov

          Hi I found the qmake executable in the path Qt5.5/gcc_64/bin folder

          Can you please tell me which tab should I change in qt projects tab to provide the path for the appropriate qmake?

          kshegunovK Offline
          kshegunovK Offline
          kshegunov
          Moderators
          wrote on last edited by
          #30

          @ayush_mistral
          Actually you set up a kit for QtCreator and then change the kit for your project. To make your kit work with the Qt you've downloaded just specify the correct qmake executable and a name that you'd recognize.
          The kit your project uses is on the projects page, up-most, just below the name of the project. You have the kit name there and under it two buttons - build and run. Pointing at the kit name ("Qt 5.6 64 bit" in my case) will cause a down arrow to show next to the text. Clicking the arrow there's a context menu that has Change kit on it, and you just select the one you like. After changing the kit, do a full rebuild of your project.

          Kind regards.

          Read and abide by the Qt Code of Conduct

          A 1 Reply Last reply
          0
          • kshegunovK kshegunov

            @ayush_mistral
            Actually you set up a kit for QtCreator and then change the kit for your project. To make your kit work with the Qt you've downloaded just specify the correct qmake executable and a name that you'd recognize.
            The kit your project uses is on the projects page, up-most, just below the name of the project. You have the kit name there and under it two buttons - build and run. Pointing at the kit name ("Qt 5.6 64 bit" in my case) will cause a down arrow to show next to the text. Clicking the arrow there's a context menu that has Change kit on it, and you just select the one you like. After changing the kit, do a full rebuild of your project.

            Kind regards.

            A Offline
            A Offline
            ayush_mistral
            wrote on last edited by
            #31

            @kshegunov

            Hi,

            I have the following settings in the newly created kit

            Name- cppunit_qt
            Device type - desktop
            Device - Local PC
            Compiler - GCC (x86 64bit in /usr/bin)
            Debugger - System GDB at /usr/bin/gdb

            Try to make clean and rebuild the project still the error is the same
            Can you please tell me if I am missing something or doing something wrong?

            Thanks and Regards
            Ayush
            Qt Version - Qt5.5.1GCC 64bit

            jsulmJ 1 Reply Last reply
            0
            • A ayush_mistral

              @kshegunov

              Hi,

              I have the following settings in the newly created kit

              Name- cppunit_qt
              Device type - desktop
              Device - Local PC
              Compiler - GCC (x86 64bit in /usr/bin)
              Debugger - System GDB at /usr/bin/gdb

              Try to make clean and rebuild the project still the error is the same
              Can you please tell me if I am missing something or doing something wrong?

              Thanks and Regards
              Ayush
              Qt Version - Qt5.5.1GCC 64bit

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

              @ayush_mistral Which Qt version did you set in that kit?

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

              A 1 Reply Last reply
              0
              • jsulmJ jsulm

                @ayush_mistral Which Qt version did you set in that kit?

                A Offline
                A Offline
                ayush_mistral
                wrote on last edited by
                #33

                @jsulm

                I set 5.5.1

                kshegunovK 1 Reply Last reply
                0
                • A ayush_mistral

                  @jsulm

                  I set 5.5.1

                  kshegunovK Offline
                  kshegunovK Offline
                  kshegunov
                  Moderators
                  wrote on last edited by kshegunov
                  #34

                  @ayush_mistral
                  But with which qmake that is? If you go to the "Manage kits" page and look at the "Qt versions" tab you see that there's a qmake location column. You'd want to have the version you use to match the qmake you have in the manually installed directory. I have the following table:

                  Auto-detected
                      Qt 5.5.1 in PATH (System)         /usr/bin/qmake
                  Manual
                      Qt 5.6.0 (qt5)                    /home/nye/Programming/C++/qt/qt-5.6/qtbase/bin/qmake
                      Qt 5.7.0 (qt-dev)                 /home/nye/Programming/C++/qt/qt-dev/qtbase/bin/qmake
                  

                  Any of those can be used to make a kit, however in your case you need to make sure to use the one you installed from the SDK package.

                  Kind regards.

                  Read and abide by the Qt Code of Conduct

                  A A 2 Replies Last reply
                  0
                  • kshegunovK kshegunov

                    @ayush_mistral
                    But with which qmake that is? If you go to the "Manage kits" page and look at the "Qt versions" tab you see that there's a qmake location column. You'd want to have the version you use to match the qmake you have in the manually installed directory. I have the following table:

                    Auto-detected
                        Qt 5.5.1 in PATH (System)         /usr/bin/qmake
                    Manual
                        Qt 5.6.0 (qt5)                    /home/nye/Programming/C++/qt/qt-5.6/qtbase/bin/qmake
                        Qt 5.7.0 (qt-dev)                 /home/nye/Programming/C++/qt/qt-dev/qtbase/bin/qmake
                    

                    Any of those can be used to make a kit, however in your case you need to make sure to use the one you installed from the SDK package.

                    Kind regards.

                    A Offline
                    A Offline
                    asanka424
                    wrote on last edited by
                    #35

                    @kshegunov sorry I was replyin from my phone and seems like reply gone to you.

                    1 Reply Last reply
                    0
                    • kshegunovK kshegunov

                      @ayush_mistral
                      But with which qmake that is? If you go to the "Manage kits" page and look at the "Qt versions" tab you see that there's a qmake location column. You'd want to have the version you use to match the qmake you have in the manually installed directory. I have the following table:

                      Auto-detected
                          Qt 5.5.1 in PATH (System)         /usr/bin/qmake
                      Manual
                          Qt 5.6.0 (qt5)                    /home/nye/Programming/C++/qt/qt-5.6/qtbase/bin/qmake
                          Qt 5.7.0 (qt-dev)                 /home/nye/Programming/C++/qt/qt-dev/qtbase/bin/qmake
                      

                      Any of those can be used to make a kit, however in your case you need to make sure to use the one you installed from the SDK package.

                      Kind regards.

                      A Offline
                      A Offline
                      ayush_mistral
                      wrote on last edited by ayush_mistral
                      #36

                      @kshegunov

                      Hi,

                      In the QT versions tab of my newly created kit the path for the qmake is the same in the manually installed directory (/mistral/QT/5.5/gcc_64/bin/qmake). I also tried to change the qmake and added in the QT version present in path /usr/bin/qmake but still the error is same

                      Thanks and Regards
                      Ayush

                      kshegunovK 1 Reply Last reply
                      0
                      • A ayush_mistral

                        @kshegunov

                        Hi,

                        In the QT versions tab of my newly created kit the path for the qmake is the same in the manually installed directory (/mistral/QT/5.5/gcc_64/bin/qmake). I also tried to change the qmake and added in the QT version present in path /usr/bin/qmake but still the error is same

                        Thanks and Regards
                        Ayush

                        kshegunovK Offline
                        kshegunovK Offline
                        kshegunov
                        Moderators
                        wrote on last edited by
                        #37

                        @ayush_mistral
                        Hello,

                        In the QT versions tab of my newly created kit the path for the qmake is the same in the manually installed directory (/mistral/QT/5.5/gcc_64/bin/qmake)

                        This should be okay. I honestly am out of ideas ...

                        Kind regards.

                        Read and abide by the Qt Code of Conduct

                        1 Reply Last reply
                        0
                        • E Offline
                          E Offline
                          eureka
                          wrote on last edited by
                          #38

                          Spotting your earlier post ...

                          "There are some common libQt5.so files also present in the path /usr/lib/x86_64-linux-gnu"

                          Since all ideas are exhausted I will venture a suggestion (as a beginner). A fresh installation.

                          ...

                          When I migrated from Qt4 to Qt 5.5.1 I got myself in quite a stew with conflicts with legacy Qt libraries. So I decided to start afresh.

                          I purged all old versions of Qt 4 and Qt 5.
                          I purged remaining libraries in /usr/lib/x86_64-linux-gnu (actually mine were in x86_32-linux-gnu)
                          I installed Qt 5.5.1 using workflow here ...

                          https://launchpad.net/~beineri/+archive/ubuntu/opt-qt551-trusty

                          and followed some other threads

                          http://askubuntu.com/questions/279421/how-can-i-install-qt-5-x-on-12-04-lts

                          ftp://ftp.oregonstate.edu/.2/lfs-website/blfs/view/svn/x/qt5.html

                          I ran command .. qmake --version

                          (see options by running command .. man qmake)

                          QMake version 3.0
                          Using Qt version 5.5.1 in /opt/qt55/lib

                          qtchooser -print-env
                          QT_SELECT="default"
                          QTTOOLDIR="/opt/qt55/bin"
                          QTLIBDIR="/opt/qt55/li"

                          I edited ~/.profile as follows (two lines)

                          export QT5PREFIX="/opt/qt55"
                          export LD_LIBRARY_PATH="/opt/qt55/bin":${LD_LIBRARY_PATH}

                          I checked and edited the paths in Qt Creator

                          And I was then out of my conflicts mess.
                          But this is just a hunch that you have conflicts as I did.
                          I would put your Qt 5.5.1 installation in /opt/qt55

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