In file included from /root/ffmpeg/libavutil/common.h:160,
                 from /root/ffmpeg/libavutil/avutil.h:24,
                 from avcodec.h:14,
                 from mpegvideo.c:28:
/root/ffmpeg/libavutil/internal.h:202: warning: static declaration of 'lrintf' follows non-static declaration
mpegvideo.c: In function `MPV_encode_picture':
/root/ffmpeg/libavutil/internal.h:202: sorry, unimplemented: inlining failed in call to 'lrintf': redefined extern inline functions are not considered for inlining
mpegvideo.c:2571: sorry, unimplemented: called from here
make[1]: *** [mpegvideo.o] Error 1
make[1]: Leaving directory `/root/ffmpeg/libavcodec'
make: *** [lib] Error 2