From 67f8e352016347edfe5500e26a1ed9b22886105c Mon Sep 17 00:00:00 2001
From: Andrew Chong <andrew.chong@arm.com>
Date: Mon, 20 May 2019 13:22:46 +0800
Subject: [PATCH] This allows CPP application to use the functions from cc.h.

---
 features/lwipstack/lwip-sys/arch/cc.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/features/lwipstack/lwip-sys/arch/cc.h b/features/lwipstack/lwip-sys/arch/cc.h
index 5d68b8e780..05c596a222 100644
--- a/features/lwipstack/lwip-sys/arch/cc.h
+++ b/features/lwipstack/lwip-sys/arch/cc.h
@@ -40,6 +40,9 @@
 #include "mbedtls/md5.h"
 #endif
 
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 /* ARM/LPC17xx is little endian only */
 #if !defined(BYTE_ORDER) || (BYTE_ORDER != LITTLE_ENDIAN && BYTE_ORDER != BIG_ENDIAN)
@@ -180,4 +183,8 @@ SET_MEMP_SECTION(memp_memory_PPP_PCB_base);
 #endif
 #endif
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* __CC_H__ */