optional_depends  flac                                            \
                  "--enable-flac"                                 \
                  "--disable-flac"                                \
                  "for FLAC (Free Lossless Audio Codec) support"  &&

optional_depends  "libmad"                                   \
                  "--enable-mad"                             \
                  "--disable-mad"                            \
                  "for MPEG Audio Decoder (libmad) support"  &&

optional_depends  "libmpcdec"        \
                  "--enable-mpc"     \
                  "--disable-mpc"    \
                  "for MPC support"  &&

optional_depends  libvorbis                 \
                  "--enable-vorbis"         \
                  "--disable-vorbis"        \
                  "for Ogg/Vorbis support"  &&

optional_depends  "alsa-lib"          \
                  "--enable-alsa"     \
                  "--disable-alsa"    \
                  "for ALSA support"  &&

optional_depends  arts                \
                  "--enable-arts"     \
                  "--disable-arts"    \
                  "for ARTS support"
