Building a slim version of FFmpeg (specifically: MOV muxer without AVI muxer) from latest source, an error around ff_reshuffle_raw_rgb is breaking the build:
movenc.o : error LNK2019: unresolved external symbol ff_reshuffle_raw_rgb referenced in function mov_write_packet libavformat/avformat-v-57.dll : fatal error LNK1120: 1 unresolved externals library.mak:111: recipe for target 'libavformat/avformat-v-57.dll' failed make: *** [libavformat/avformat-v-57.dll] Error 96
Not a big a deal, it is just a small bug there:
 libavformat/Makefile | 2 +-  1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavformat/Makefile b/libavformat/Makefile index 3b32907..6ae4327 100644 --- a/libavformat/Makefile +++ b/libavformat/Makefile @@ -268,7 +268,7 @@ OBJS-$(CONFIG_MMF_DEMUXER)              += mmf.o  OBJS-$(CONFIG_MMF_MUXER)                += mmf.o rawenc.o  OBJS-$(CONFIG_MOV_DEMUXER)              += mov.o mov_chan.o replaygain.o  OBJS-$(CONFIG_MOV_MUXER)                += movenc.o avc.o hevc.o \ -                                           movenchint.o mov_chan.o rtp.o movenccenc.o +                                           movenchint.o mov_chan.o rtp.o movenccenc.o rawutils.o  OBJS-$(CONFIG_MP2_MUXER)                += mp3enc.o rawenc.o id3v2enc.o  OBJS-$(CONFIG_MP3_DEMUXER)              += mp3dec.o replaygain.o  OBJS-$(CONFIG_MP3_MUXER)                += mp3enc.o rawenc.o id3v2enc.o
BTW as of 23 Mar 2016 the patch is not in FFmpeg master branch, I suppose my submission was not done right or otherwise rejected.