Install QT5.1 in ubuntukylin 13.04



  • my OS is ubuntuylin 13.04,I download QT 5.1 int http://qt-project.org,

    then I use- cmd "chmod 755 ./QT......run"
    "./QT.....run"

    try to install QT5.1 and finish it work. and I going to make a first QT project.

    I edit simple code by VIM, and move the file to a new file directory.(path = /home/jxf/gui)

    I use cmd " cd /home/jxf/gui"
    "qmake -project"

    and system tell me " qmake: could not find a Qt installation of ' ' ".....

    now I use the IDE(QT creator)
    
    the question is "can't find file or directory"(it's chinese error ,I try to translate,my english is poor.........)
    
    code  : 
       #include<QApplication>     // <==this line ,IDE tell me "can't find file or directory"
    
      #include<QLabel>
    
       int main(int argc, char* argv[])
    
    {
    
         QApplication app(argc,argv);
    
         QLabel label = new QLabel("hello QT!");
    
         label->show();
    
        return app.exec&#40;&#41;;
    
    }
    
    what should I do ......


  • @#include<QApplication> // <==this line ,IDE tell me “can’t find file or directory”
    #include<QLabel>
    int main(int argc, char* argv[])
    {
    QApplication app(argc,argv);
    QLabel label = new QLabel(“hello QT!”);
    label->show();
    return app.exec();
    }
    @


  • Lifetime Qt Champion

    Hi and welcome to devnet,

    Since you are using Qt 5 you are missing:

    @QT += widgets@

    in your pro file



  • excuse me..
    I'm a noob and thanks your E-mail,

    first,I building a new file that include these code.
    @
    #include<QApplication>
    #include<QLabel>
    int main(int argc, char* argv[])
    {
    QApplication app(argc,argv);
    QLabel label = new QLabel(“hello QT!”);
    label->show();
    return app.exec();
    }
    @

    the name of file is qt.cpp.(path = /home/jxf/gui)

    the second ,cmd "cd /home/jxf/gui"
    so far,everything go well,

    for build a .pro, I use cmd "qmake -project", if all go well, I'll get a .pro(file).
    but systen tell me " qmake: could not find a Qt installation of '' "

    what happen....


  • Lifetime Qt Champion

    Are you sure you are using the qmake from Qt 5.1 ?



  • use this in your terminal mode:

    @sudo apt-get install build-essential@


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