--- yafaray.orig/src/yafraycore/scene.cc	2012-04-18 00:03:16.508415920 -0300
+++ yafaray/src/yafraycore/scene.cc		2012-04-18 00:29:59.090117108 -0300
@@ -39,6 +39,7 @@
 #include <iostream>
 #include <limits>
 #include <sstream>
+#include <unistd.h>
 
 __BEGIN_YAFRAY