Default Facing problem for Hello world

  • 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.

  • Qt Champions 2017

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

    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.

  • 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

  • Qt Champions 2017

    @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

  • Lifetime Qt Champion

    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.

  • Hi thanks,

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

  • Qt Champions 2017

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

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