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Default Facing problem for Hello world

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  • E Offline
    E Offline
    eppy
    wrote on last edited by eppy
    #1

    hI

    i am very new to QT coding. I did the Hello world code for this. But i got the error.
    i have attached the all files for this project.

    https://drive.google.com/file/d/0B-nL-WSVphHDWUIyVnc1YlZST2M/view?usp=sharing

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    • mrjjM Offline
      mrjjM Offline
      mrjj
      Lifetime Qt Champion
      wrote on last edited by mrjj
      #2

      Hi and welcome
      It is fine with the project but you should also write the error :)

      update:
      your project works here. When pressing buttons it does say "Hello Qt" :)

      So if you have compiler issue then write which compiler, your platform 32/64 bit and version of Qt.

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      • E Offline
        E Offline
        eppy
        wrote on last edited by eppy
        #3

        Hi
        Here is compilation result of the program

        10:00:10: Running steps for project test...
        10:00:10: Configuration unchanged, skipping qmake step.
        10:00:10: Starting: "/usr/bin/make"
        g++ -m32 -Wl,-rpath,/home/saag/Qt5.5.0/5.5/gcc -Wl,-rpath,/home/saag/Qt5.5.0/5.5/gcc/lib -o test main.o mainwindow.o moc_mainwindow.o -L/home/saag/Qt5.5.0/5.5/gcc/lib -lQt5Widgets -lQt5Gui -lQt5Core -lGL -lpthread
        /usr/bin/ld: cannot find -lGL
        collect2: error: ld returned 1 exit status
        make: *** [test] Error 1
        10:00:11: The process "/usr/bin/make" exited with code 2.
        Error while building/deploying project test (kit: Desktop Qt 5.5.0 GCC 32bit)
        When executing step "Make"
        10:00:11: Elapsed time: 00:01.

        :-1: error: cannot find -lGL
        :-1: error: collect2: error: ld returned 1 exit status

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        • mrjjM Offline
          mrjjM Offline
          mrjj
          Lifetime Qt Champion
          wrote on last edited by
          #4

          @eppy said:

          cannot find -lGL

          it cannot find the GL library (opengl) so I assume its not installed in the linux ? version you are using.
          or for some reason cannot find it.
          I do wonder why its included in build string though as you program works on windows and i see no opengl in it.

          anyways try to install libglu1-mesa-dev
          as they talk about here
          https://forum.qt.io/topic/23310/solved-qt5-under-ubuntu-cannot-find-lgl/5

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          • SGaistS Offline
            SGaistS Offline
            SGaist
            Lifetime Qt Champion
            wrote on last edited by
            #5

            Hi and welcome to devnet,

            To add to @mrjj it's the development package that is missing from your box.

            It's included because Qt uses OpenGL, the name of the library is different on Windows.

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

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            • E Offline
              E Offline
              eppy
              wrote on last edited by
              #6

              Hi thanks,

              I am using ubuntu. I install the qt 5.5 version.

              mrjjM 1 Reply Last reply
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              • E eppy

                Hi thanks,

                I am using ubuntu. I install the qt 5.5 version.

                mrjjM Offline
                mrjjM Offline
                mrjj
                Lifetime Qt Champion
                wrote on last edited by
                #7

                @mrjj said:
                if ubuntu 13.04
                try
                sudo apt-get install freeglut3-dev

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