执行的情况：
Running build steps for project Hello...
Starting: /opt/qtsdk-2009.03/qt/bin/qmake /Code/Qt4/Hello/Hello.pro -spec linux-g++ -r CONFIG+=debug
Exited with code 0.
Starting: /usr/bin/make -w
make: Entering directory `/Code/Qt4/Hello'
g++ -Wl,-rpath,/opt/qtsdk-2009.03/qt/lib -o Hello main.o widget.o moc_widget.o -L/opt/qtsdk-2009.03/qt/lib -lQtGui -L/opt/qtsdk-2009.03/qt/lib -L/usr/X11R6/lib -pthread -lfreetype -lgobject-2.0 -lSM -lICE -pthread -pthread -lXrender -lfontconfig -lXext -lX11 -lQtCore -lm -pthread -lgthread-2.0 -lrt -lglib-2.0 -ldl -lpthread
/opt/qtsdk-2009.03/qt/lib/libQtGui.so: undefined reference to `FcFreeTypeQueryFace'
collect2: ld 返回 1
make: Leaving directory `/Code/Qt4/Hello'
make: *** [Hello] 错误 1
Exited with code 2.
Error while building project Hello
When executing build step 'Make'
