diff -r -u srelay-0.4.6/relay.c srelay-0.4.6+iPhone/relay.c
--- srelay-0.4.6/relay.c	2003-03-26 20:45:13.000000000 +0000
+++ srelay-0.4.6+iPhone/relay.c	2007-12-27 12:35:26.000000000 +0000
@@ -34,6 +34,8 @@
 
 #include "srelay.h"
 
+#include <sys/filio.h>
+
 #ifdef HAVE_LIBWRAP
 # include <tcpd.h>
 # ifdef LINUX