From 1f5f08bf1e583292981c83a09bfb2b275a288329 Mon Sep 17 00:00:00 2001
From: Max Lv <max.c.lv@gmail.com>
Date: Sat, 3 May 2014 15:18:44 +0800
Subject: [PATCH] fix the building issue

---
 src/include.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/include.h b/src/include.h
index 3bd2985e..4f303776 100644
--- a/src/include.h
+++ b/src/include.h
@@ -1,6 +1,9 @@
 #ifndef _INCLUDE_H
 #define _INCLUDE_H
 
+// only enable TCP_FASTOPEN on linux
+#if __linux
+
 /*  conditional define for TCP_FASTOPEN */
 #ifndef TCP_FASTOPEN
 #define TCP_FASTOPEN   23
@@ -11,6 +14,8 @@
 #define MSG_FASTOPEN   0x20000000
 #endif
 
+#endif
+
 int udprelay_init(const char *server_host, const char *server_port,
 #ifdef UDPRELAY_LOCAL
                   const char *remote_host, const char *remote_port,