From e9000658fb1a5e916472bf46702f44b0bddc79eb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Joan=20Lled=C3=B3?= <jlledom@member.fsf.org>
Date: Tue, 9 Jul 2019 21:54:22 +0200
Subject: [PATCH] IF_NAMESIZE: define it only if it's not defined before by
 system headers

---
 src/include/lwip/if_api.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/include/lwip/if_api.h b/src/include/lwip/if_api.h
index 39017abd..b7269e2a 100644
--- a/src/include/lwip/if_api.h
+++ b/src/include/lwip/if_api.h
@@ -49,7 +49,9 @@
 extern "C" {
 #endif
 
+#ifndef IF_NAMESIZE
 #define IF_NAMESIZE NETIF_NAMESIZE
+#endif
 
 char * lwip_if_indextoname(unsigned int ifindex, char *ifname);
 unsigned int lwip_if_nametoindex(const char *ifname);