--- CMakeLists.txt.orig	2012-08-16 04:01:13 UTC
+++ CMakeLists.txt
@@ -61,6 +61,7 @@ option ( enable-debug "enable debugging 
 option ( enable-libsndfile "compile libsndfile support (if it is available)" on )
 option ( enable-aufile "compile support for sound file output" on )
 option ( enable-pulseaudio "compile PulseAudio support (if it is available)" on )
+option ( enable-sndio "compile Sndio support (if it is available)" on )
 option ( enable-jack "compile JACK support (if it is available)" on )
 option ( enable-midishare "compile MidiShare support (if it is available)" on )
 option ( enable-readline "compile readline lib line editing (if it is available)" on )
@@ -313,6 +314,11 @@ else ( enable-pulseaudio )
   unset_pkg_config ( PULSE )
 endif ( enable-pulseaudio )
 
+unset ( SNDIO_SUPPORT CACHE )
+if ( enable-sndio )
+  set ( SNDIO_SUPPORT 1 )
+endif ( enable-sndio )
+
 unset ( ALSA_SUPPORT CACHE )
 if ( enable-alsa )
   pkg_check_modules ( ALSA alsa>=0.9.1 )