源码：
/****************************************************************
**
** Qt教程一 - 2
**
****************************************************************/
#include <qapplication.h>
#include <qpushbutton.h>
int main( int argc, char **argv )
{
QApplication a( argc, argv );
QPushButton hello( "Hello world!", 0 );
hello.resize( 100, 30 );
a.setMainWidget( &hello );
hello.show();
return a.exec();
}
写完后我用一下命令编译：
qmake -project helloworld
qmake
当执行make的时候报错
报错信息：
make[49]: Leaving directory `/home/ywlcn/QT-c'
make[48]: *** [sub-QT-c_pro-make_default] 错误 2
make[48]: Leaving directory `/home/ywlcn/QT-c'
make[47]: *** [sub-QT-c_pro-make_default] 错误 2
make[47]: Leaving directory `/home/ywlcn/QT-c'
make[46]: *** [sub-QT-c_pro-make_default] 错误 2
make[46]: Leaving directory `/home/ywlcn/QT-c'
make[45]: *** [sub-QT-c_pro-make_default] 错误 2
make[45]: Leaving directory `/home/ywlcn/QT-c'
make[44]: *** [sub-QT-c_pro-make_default] 错误 2
make[44]: Leaving directory `/home/ywlcn/QT-c'
make[43]: *** [sub-QT-c_pro-make_default] 错误 2
make[43]: Leaving directory `/home/ywlcn/QT-c'
make[42]: *** [sub-QT-c_pro-make_default] 错误 2
make[42]: Leaving directory `/home/ywlcn/QT-c'
make[41]: *** [sub-QT-c_pro-make_default] 错误 2
make[41]: Leaving directory `/home/ywlcn/QT-c'
make[40]: *** [sub-QT-c_pro-make_default] 错误 2
make[40]: Leaving directory `/home/ywlcn/QT-c'
make[39]: *** [sub-QT-c_pro-make_default] 错误 2
make[39]: Leaving directory `/home/ywlcn/QT-c'
make[38]: *** [sub-QT-c_pro-make_default] 错误 2
make[38]: Leaving directory `/home/ywlcn/QT-c'
make[37]: *** [sub-QT-c_pro-make_default] 错误 2
make[37]: Leaving directory `/home/ywlcn/QT-c'
make[36]: *** [sub-QT-c_pro-make_default] 错误 2
make[36]: Leaving directory `/home/ywlcn/QT-c'
make[35]: *** [sub-QT-c_pro-make_default] 错误 2
make[35]: Leaving directory `/home/ywlcn/QT-c'
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make[34]: Leaving directory `/home/ywlcn/QT-c'
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make[32]: Leaving directory `/home/ywlcn/QT-c'
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make[31]: Leaving directory `/home/ywlcn/QT-c'
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make[30]: Leaving directory `/home/ywlcn/QT-c'
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make[28]: Leaving directory `/home/ywlcn/QT-c'
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make[21]: Leaving directory `/home/ywlcn/QT-c'
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make[20]: Leaving directory `/home/ywlcn/QT-c'
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make[19]: Leaving directory `/home/ywlcn/QT-c'
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make[14]: Leaving directory `/home/ywlcn/QT-c'
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make[13]: Leaving directory `/home/ywlcn/QT-c'
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make[12]: Leaving directory `/home/ywlcn/QT-c'
make[11]: *** [sub-QT-c_pro-make_default] 错误 2
make[11]: Leaving directory `/home/ywlcn/QT-c'
make[10]: *** [sub-QT-c_pro-make_default] 错误 2
make[10]: Leaving directory `/home/ywlcn/QT-c'
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make[9]: Leaving directory `/home/ywlcn/QT-c'
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make[8]: Leaving directory `/home/ywlcn/QT-c'
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make[7]: Leaving directory `/home/ywlcn/QT-c'
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make[6]: Leaving directory `/home/ywlcn/QT-c'
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make[5]: Leaving directory `/home/ywlcn/QT-c'
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make[4]: Leaving directory `/home/ywlcn/QT-c'
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make[3]: Leaving directory `/home/ywlcn/QT-c'
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make[2]: Leaving directory `/home/ywlcn/QT-c'
make[1]: *** [sub-QT-c_pro-make_default] 错误 2
make[1]: Leaving directory `/home/ywlcn/QT-c'
make: *** [sub-QT-c_pro-make_default] 错误 2
我是新手，请大家帮忙解决！！！
