Qt hello,world出错(解决)

buffee

1. 
   
2. #include <qapplication.h>
   
3. #include <qpushbutton.h>
   
4. 
   
5. 
   
6. int main( int argc, char **argv )
   
7. {
   
8.     QApplication a( argc, argv );
   
9. 
   
10.     QPushButton hello( "Hello world!", 0 );
    
11.     hello.resize( 100, 30 );
    
12. 
    
13.     a.setMainWidget( &hello );
    
14.     hello.show();
    
15.     return a.exec();
    
16. }
    

复制代码

[root@buffee ~]# qmake -project /root/qt_program/main.cpp
[root@buffee ~]# qmake /root/qt_program/main.cpp
/root/qt_program/main.cpp:5: Unknown test function: int main
/root/qt_program/main.cpp:7: Unknown test function: QApplication a
/root/qt_program/main.cpp:7: Parse Error ('QApplication a( argc, argv );')
/root/qt_program/main.cpp:7: Unterminated conditional block at end of file
Error processing project file: /root/qt_program/main.cpp
不知道什么原因

ps:
qmake等命令必须到Qt-4.2.2的安装目录下才能执行，可能是./configure的时候没有
设置environment variables