小弟装好QTE和交叉编译工具之后，编译了下，出现如下问题是什么原因啊，请大侠帮忙
[root@localhost hello]# arm-linux-gcc -o hello hello.cpp
hello.cpp:1:26: qapplication.h: No such file or directory
hello.cpp:2:25: qpushbutton.h: No such file or directory
hello.cpp: In function `int main(int, char**)':
hello.cpp:5: error: `QApplication' undeclared (first use this function)
hello.cpp:5: error: (Each undeclared identifier is reported only once for each
function it appears in.)
hello.cpp:5: error: parse error before `(' token
hello.cpp:6: error: `QPushButton' undeclared (first use this function)
hello.cpp:7: error: `hello' undeclared (first use this function)
hello.cpp:9: error: `app' undeclared (first use this function)
[root@localhost hello]#
