--- a/src/iceauth.c	Fri Apr 17 08:59:23 2015
+++ b/src/iceauth.c	Fri Apr 17 09:11:21 2015
@@ -41,6 +41,7 @@
 #endif
 
 static int was_called_state;
+extern void arc4random_buf(void *buf, size_t nbytes);
 
 /*
  * MIT-MAGIC-COOKIE-1 is a sample authentication method implemented by