depends pkgconfig && depends expat && depends -sub CXX gcc && depends python && depends libsamplerate && if [[ $JACK2_BRANCH == scm ]]; then depends subversion fi && optional_depends alsa-lib \ "--alsa" \ "" \ "for ALSA audio" && optional_depends libffado \ "--firewire" \ "" \ "for firewire audio" && optional_depends doxygen \ "--doxygen" \ "" \ "to build documentation" && optional_depends dbus \ "--dbus" \ "--classic" \ "to enable the D-Bus control interface (instead of classic jackd!)" && if is_depends_enabled $SPELL dbus; then depends dbus-python fi