[fun@kru /media/bordel/rockbox/apps/codecs]% for i in */*.c;do grep -q `basename $i` `dirname $i`/SOURCES || echo $i;done
grep: demac/SOURCES: No such file or directory
demac/demac.c
grep: demac/SOURCES: No such file or directory
demac/wavwrite.c
libatrac/main.c
libcook/main.c
libfaad/drm_dec.c
libfaad/hcr.c
libfaad/ic_predict.c
libfaad/lt_predict.c
libfaad/output.c
libfaad/rvlc.c
libffmpegFLAC/main.c
libmad/decoder.c
libmad/fixed.c
libmad/minimad.c
libmad/timer.c
libmad/version.c
libspeex/fftwrap.c
libspeex/filterbank.c
libspeex/jitter.c
libspeex/kiss_fft.c
libspeex/kiss_fftr.c
libspeex/mdf.c
libspeex/preprocess.c
libspeex/smallft.c
libspeex/vorbis_psy.c
libwmavoice/dct32.c