[lili@localhost lili]$ qmake hehe.pro
[lili@localhost lili]$ make
g++ -c -pipe -Wall -W -O2 -march=i386 -mcpu=i686 -g -DGLX_GLXEXT_LEGACY -fno-use-cxa-atexit -fno-exceptions -DQT_NO_DEBUG -I/usr/lib/qt-3.1/mkspecs/default -I. -I/usr/lib/qt-3.1/include -I.ui/ -I.moc/ -o .obj/main.o main.cpp
main.cpp: In function `int main(int, char**)':
main.cpp:8: `QPushButtton' undeclared (first use this function)
main.cpp:8: (Each undeclared identifier is reported only once for each function
it appears in.)
main.cpp:8: parse error before `(' token
main.cpp:9: `hellobtn' undeclared (first use this function)
make: *** [.obj/main.o] Error