--- ./viewer/svutil.cpp.ori	2012-04-28 01:59:58.441072997 +0200
+++ ./viewer/svutil.cpp	2012-04-28 02:00:35.085467955 +0200
@@ -37,6 +37,7 @@
 #include <signal.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 #include <netdb.h>
 #include <sys/socket.h>
 #ifdef __linux__