depends SDL

optional_depends libmad "--enable-mad" "--disable-mad" "For mp3 support"
optional_depends alsa-lib "--enable-alsa" "--disable-alsa" "For alsa support"
optional_depends libvorbis "--enable-vorbis" "--disable-vorbis" "For ogg support"
optional_depends flac "--enable-flac" "--disable-flac" "For flac support"
optional_depends mpeg2dec "" "--disable-mpeg2" "For mpeg2 decoding"
