make -C libpostproc clean
make[2]: Entering directory `/usr/src/ffmpeg-0.cvs20050918/libavcodec/libpostproc'
rm -f *.o libpostproces.a *~ *.so libpostproc.a
make[2]: Leaving directory `/usr/src/ffmpeg-0.cvs20050918/libavcodec/libpostproc'
rm -f Makefile.bak .depend
make[1]: Leaving directory `/usr/src/ffmpeg-0.cvs20050918/libavcodec'
rm -f config.mak config.h
root@ghostdog:/usr/src/ffmpeg-0.cvs20050918# make
Makefile:5: config.mak: No such file or directory
make: *** No rule to make target `config.mak'.  Stop.
root@ghostdog:/usr/src/ffmpeg-0.cvs20050918# make distclean
Makefile:5: config.mak: No such file or directory
make: *** No rule to make target `config.mak'.  Stop.