--- ./polygnome-0.1.3/src/MTAudio.h	2012-03-03 07:34:11.000000000 +0100
+++ ./src/MTAudio.h	2012-09-17 21:59:51.715874730 +0200
@@ -30,6 +30,7 @@
 #define MT_AUDIO_H_
 
 #include <stk/RtAudio.h>
+#include <unistd.h>
 
 #include <vector>
 #include <tr1/memory>