在buntu9.10下安装QT4.5.3

sudo apt-get install build-essential

tar -zxvf qt-x11-opensource-src-4.5.3.tar.gz
./configure

配置过程出错了：

Basic XLib functionality test failed!
You might need to modify the include and library search paths by editing
QMAKE_INCDIR_X11 and QMAKE_LIBDIR_X11 in /tmp/qt-x11-opensource-src-4.5.3/mkspecs/linux-g++.
解决方法：
＃sudo apt-get install libx11-dev libfreetype6-dev libavahi-gobject-dev libSM-dev libXrender-dev libfontconfig-dev libXext-dev

之后重新配置。
make

make install

# vi ~/.bashrc
QTDIR=/usr/local/Trolltech/Qt-4.5.3/
PATH=$QTDIR/bin:$PATH
MANPATH=$QTDIR/doc/man:$MANPATH
LD_LIBRARY_PATH=$QTDIR/lib:$LD_LIBRARY_PATH
export QTDIR PATH MANPATH LD_LIBRARY_PATH

测试QT环境：

mkdir hello

编写hello.cpp

#include
#include

int main( int argc, char **argv )
{
    QApplication a( argc, argv );

    QPushButton hello( "Hello world!");
    hello.resize( 100, 30 );

    hello.show();
    return a.exec();
}

编译：

qmake -project

qmake

make

生成可执行程序hello

运行：

./hello