optional_depends alsa-utils  "--with-alsa"     "--without-alsa"     "for alsa support"
optional_depends libpng      "--with-png"      "--without-png"      "for PNG support"
optional_depends ffmpeg      "--with-ffmpeg"   "--without-ffmpeg"   "for FFMPEG support"
optional_depends libsndfile  "--with-sndfile"  "--without-sndfile"  "for lame support"
optional_depends libmad      "--with-mad"      "--without-mad"      "for mad support"
optional_depends flac        "--with-flac"     "--without-flac"     "for flac support"
optional_depends lame        "--with-lame"     "--without-lame"     "for lame support"
optional_depends libid3tag   "--with-id3tag"   "--without-id3tag"   "for MP3 tag support"
optional_depends amrnb       "--with-amrnb"    "--without-amrnb"    "for AMR narrowband support"
optional_depends amrwb       "--with-amrwb"    "--without-amrwb"    "for AMR wideband support"
optional_depends libmad      "--with-mad"      "--without-mad"      "for mad support"
optional_depends ladspa_sdk  "--with-ladspa"   "--without-ladspa"   "for ladspa support"
optional_depends wavpack     "--with-wavpack"  "--without-wavpack"  "for loseless encoding support"
optional_depends libogg      "--with-oggvorbis" "--without-oggvorbis" "for OGG support"
optional_depends pulseaudio  "--with-pulseaudio" "--without-pulseaudio" "for pulseaudio support"
