From 2ae481b9693d56f0372df9bf8ca968d93302fc12 Mon Sep 17 00:00:00 2001
From: Karl Hiramoto <karl@hiramoto.org>
Date: Fri, 15 Nov 2013 10:42:27 +0100
Subject: [PATCH] some libc implementations don't define struct ip_mreqn define
 it here if CFLAG passed with -DNEED_STRUCT_IP_MREQN

I found this issue cross compiling for ARM using eclibc in the
https://www.yoctoproject.org/  build system.
---
 miniupnpc/miniupnpc.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/miniupnpc/miniupnpc.c b/miniupnpc/miniupnpc.c
index 5c191c5..95504b1 100644
--- a/miniupnpc/miniupnpc.c
+++ b/miniupnpc/miniupnpc.c
@@ -71,6 +71,17 @@
 #define TIMEVAL struct timeval
 #endif
 
+
+#if defined(HAS_IP_MREQN) && defined(NEED_STRUCT_IP_MREQN)
+/* Several versions of glibc don't define this structure, define it here and compile with CFLAGS NEED_STRUCT_IP_MREQN */
+struct ip_mreqn
+{
+	struct in_addr	imr_multiaddr;		/* IP multicast address of group */
+	struct in_addr	imr_address;		/* local IP address of interface */
+	int		imr_ifindex;		/* Interface index */
+};
+#endif
+
 #include "miniupnpc.h"
 #include "minissdpc.h"
 #include "miniwget.h"