depends g++ &&
optional_depends  "nas"            \
                  "--enable-nas"   \
                  "--disable-nas"  \
                  "for nas output support"  &&
optional_depends  "alsa-lib"          \
                  "--enable-alsa09"   \
                  "--disable-alsa09"  \
                  "for alsa output support"  &&
optional_depends  "esound"         \
                  "--enable-esd"   \
                  "--disable-esdtest"  \
                  "for esd output support"  &&
optional_depends  "arts"            \
                  "--enable-arts"   \
                  "--disable-arts"  \
                  "for arts output support"
