--- viewer/svutil.h.orig	Tue Oct  5 20:48:35 2010
+++ viewer/svutil.h	Tue Oct  5 20:48:58 2010
@@ -34,6 +34,11 @@
 #else
 #include <pthread.h>
 #include <semaphore.h>
+#ifdef __OpenBSD__
+#include <unistd.h>
+#include <sys/types.h>
+#include <netinet/in.h>
+#endif
 #endif
 
 #include <string>
