I need build ffmpeg by following configuration(MSYS + MinGW): configuration: --enable-mp3lame --enable-vorbis --enable-faad --enable-faac --enable-xvid --enable-mingw32 --enable-a52 --enable-dts --enable-pp --enable-gpl --enable-memalign-hack but it can't find dts.h, faad.h ...., how to build it.