I developed a form from QtDesigner 3.3 and generated the multiclip.ui. But after I compile the project with make there is neither multiclip.h and multiclip.cpp.

Here is the process of compile:
[root@localhost Multiclip]# ls
main.cpp multiclip.ui multiclip.ui.h
multiclip.pro multiclip.ui~ multiclip.ui.h~
[root@localhost Multiclip]# qmake
[root@localhost Multiclip]# ls
main.cpp multiclip.pro multiclip.ui~ multiclip.ui.h~
Makefile multiclip.ui multiclip.ui.h
[root@localhost Multiclip]# make
g++ -o multiclip .obj/main.o .obj/multiclip.o .obj/moc_multiclip.o -L/usr/lib/qt-3.3/lib -L/usr/X11R6/lib -lqt-mt -lXext -lX11 -lm
[root@localhost Multiclip]# ls
main.cpp multiclip multiclip.ui multiclip.ui.h
Makefile multiclip.pro multiclip.ui~ multiclip.ui.h~

Is it needed the uic tool to transform *.ui to *.h and *.cpp files?
And what is the purpose to get the *.h and *.cpp files from the *.ui?
Thanks.