mplayer$ make distclean
make -C ffmpeg distclean
make -C ffmpeg clean
Makefile:2: config.mak: No such file or directory
Makefile:45: /common.mak: No such file or directory
Makefile:82: /libavutil/Makefile: No such file or directory
Makefile:148: /doc/Makefile: No such file or directory
Makefile:149: /tests/Makefile: No such file or directory
make[1]: *** No rule to make target `/tests/Makefile'.  Stop.
make: *** [clean] Error 2