From 68b0814453eafd15eca8611d47f2ac2fa76b69f2 Mon Sep 17 00:00:00 2001
From: life-liu <liujiandong1@huawe@huawei.com>
Date: Fri, 19 Mar 2021 14:46:10 +0800
Subject: [PATCH] add ifndef

---
 components/net/lwip-2.1/porting/src/sys_arch.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/components/net/lwip-2.1/porting/src/sys_arch.c b/components/net/lwip-2.1/porting/src/sys_arch.c
index 1c1ae6f3..2aa49802 100755
--- a/components/net/lwip-2.1/porting/src/sys_arch.c
+++ b/components/net/lwip-2.1/porting/src/sys_arch.c
@@ -41,8 +41,14 @@
 #include <los_timer.h>
 #include <los_config.h>
 
+#ifndef YES
 #define YES 1
+#endif
+
+#ifndef NO
 #define NO 0
+#endif
+
 #define LOSCFG_KERNEL_SMP NO
 
 #if (LOSCFG_KERNEL_SMP == YES)
-- 
Gitee