ubuntu 13.04 build QT develop env

1. install qt5

sudo apt-get install qt5-default qttools5-dev-tools

2. install g++

sudo apt-get install g++

3. install vim

sudo apt-get install vim

4. test:

4.1 mkdir hello_qt folder and create hello_qt.cpp file as follow :

#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();
}

4.2

qmake -project

4.3 add

QT += widgets

into hello_qt.pro  file

4.4 qmake hello_qt.pro

4.5 make

4.6 run ./hello_qt 

5. some informations:

Qt4过渡至Qt5

QtWebKitWidgets也是一个独立的模块：

例如编译时错误

1. error: invaliduse of incomplete type 'classQWebFrame'
2. error :  forwarddeclaration of  'classQWebFrame'

解决办法：

在*.pro文件里添加：

1. QT  +=  webkitwidgets

注意：当有QT+= webkitwidgets的时候，就不再需要QT += widgets

6. install QT4:

sudo apt-get install libqt4-dev libqt4-dbg libqt4-gui libqt4-sql qt4-dev-tools qt4-doc qt4-designer qt4-qtconfig

use the follow command to compile the code:

qmake-qt4  -project;

qmake-qt4 *.pro

make