Errors building qt

I get as far as trying to start the install qt, and when I run

./configure -prefix /opt/kde -system-zlib -platform macx-g++ -thread && 
make && make install


I get this error:

cd designer && make -f Makefile
/Developer/qt/bin/qmake -spec /Developer/qt/mkspecs/macx-g++ -o 
Makefile designer.pro
/Developer/qt/bin/uic -L /Developer/qt/plugins listboxeditor.ui -o 
listboxeditor.h
dyld: /Developer/qt/bin/uic can't open library: libqt-mt.3.dylib  (No 
such file or directory, errno = 2)
make[4]: *** [listboxeditor.h] Trace/BPT trap
make[3]: *** [sub-designer] Error 2
make[2]: *** [sub-designer] Error 2
make[1]: *** [sub-tools] Error 2
make: *** [init] Error 2

Any help?