--- viewer/svutil.cpp.orig	2009-09-22 21:32:59 +0000
+++ viewer/svutil.cpp	2009-09-22 21:35:44 +0000
@@ -43,6 +43,7 @@
 #endif
 
 #include <iostream>
+#include <cstdio>
 
 const int kBufferSize = 65536;
 const int kMaxMsgSize = 4096;