optional_depends alsa-lib \
                 "--with-alsa" \
                 "--without-alsa" \
                 "for ALSA sound driver support" &&

optional_depends oss \
                 "--with-oss" \
                 "--without-oss" \
                 "for OSS sound driver support" &&

optional_depends pulseaudio \
                 "--with-pulseaudio" \
                 "--without-pulseaudio" \
                 "for PulseAudio sound driver support" &&

optional_depends libao \
                 "--with-ao" \
                 "--without-ao" \
                 "for libao sound driver support" &&

optional_depends libsndfile \
                 "--with-sndfile" \
                 "--without-sndfile" \
                 "for libsndfile usage" &&

optional_depends libvorbis \
                 "--with-oggvorbis" \
                 "--without-oggvorbis" \
                 "for Ogg Vorbis usage" &&

optional_depends flac \
                 "--with-flac" \
                 "--without-flac" \
                 "for FLAC usage" &&

optional_depends libmad \
                 "--with-mad" \
                 "--without-mad" \
                 "for MAD (MP3 Audio Decoder) usage" &&

optional_depends libid3tag \
                 "--with-id3tag" \
                 "--without-id3tag" \
                 "for id3tag usage" &&

optional_depends lame \
                 "--with-lame" \
                 "--without-lame" \
                 "for LAME (LAME Ain't a MP3 Encoder) usage" &&

optional_depends wavpack \
                 "--with-wavpack" \
                 "--without-wavpack" \
                 "for wavpack usage" &&

optional_depends libpng \
                 "--with-png" \
                 "--without-png" \
                 "for PNG usage" &&

optional_depends ladspa \
                 "--with-ladspa-path=$INSTALL_ROOT/usr/lib/ladspa" \
                 "--without-ladspa" \
                 "for LADSPA usage"
