+#### CoreAudio support (optional) ####
+
+AC_ARG_ENABLE([coreaudio-output],
+ AS_HELP_STRING([--disable-coreaudio-output],[Disable optional CoreAudio output support]),
+ [
+ case "${enableval}" in
+ yes) coreaudio_enabled=yes ;;
+ no) coreaudio_enabled=no ;;
+ *) AC_MSG_ERROR(bad value ${enableval} for --disable-coreaudio-output) ;;
+ esac
+ ],
+ [coreaudio_enabled=auto])
+
+if test "x${coreaudio_enabled}" != xno ; then
+ AC_CHECK_HEADERS([CoreAudio/CoreAudio.h], HAVE_COREAUDIO=1)
+else
+ HAVE_COREAUDIO=0
+fi
+
+AC_SUBST(HAVE_COREAUDIO)
+AM_CONDITIONAL([HAVE_COREAUDIO], [test "x$HAVE_COREAUDIO" = x1 && test "x${coreaudio_enabled}" != "xno"])
+