From 1b18f10bee2b00a46b9e92f62c200458f7abce98 Mon Sep 17 00:00:00 2001
From: Anthony Merlino <anthony@vergeaero.com>
Date: Sat, 27 Oct 2018 18:13:02 +0000
Subject: [PATCH] Merged in antmerlino/nuttx/net-if-externC-fix (pull request
 #740)

Adds extern "C" guard in include/net/if.h

Approved-by: GregoryN <gnutt@nuttx.org>
---
 include/net/if.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/include/net/if.h b/include/net/if.h
index 1909a72951e..93d03b12747 100644
--- a/include/net/if.h
+++ b/include/net/if.h
@@ -247,6 +247,14 @@ struct ifconf
  * Public Function Prototypes
  *******************************************************************************************/
 
+#ifdef __cplusplus
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
 /*******************************************************************************************
  * Name: if_nametoindex
  *
@@ -282,4 +290,9 @@ unsigned int if_nametoindex(FAR const char *ifname);
 
 FAR char *if_indextoname(unsigned int ifindex, FAR char *ifname);
 
+#undef EXTERN
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* __INCLUDE_NET_IF_H */