optional_depends portaudio  "" "" "for portaudio support"
optional_depends alsa-utils "" "" "for ALSA audio output sub-system"
optional_depends alsa-oss   "" "" "for alsa-oss support"
optional_depends nas        "" "" "for network audio support"
optional_depends openal     "" "" "for openal audio support"
optional_depends pulseaudio "" "" "for pulseaudio support"
optional_depends jack2      "" "" "for jack2 audio support"
