$OpenBSD$
--- irc.cpp.orig	Mon May 23 15:20:16 2011
+++ irc.cpp	Mon May 23 15:20:42 2011
@@ -4,6 +4,10 @@
 
 #include "headers.h"
 
+#ifdef __OpenBSD__
+#define MSG_NOSIGNAL 0
+#endif
+
 int nGotIRCAddresses = 0;
 bool fGotExternalIP = false;
 
