From deb6bdf39a1cb133b33c669a8faf033e9b481499 Mon Sep 17 00:00:00 2001
From: Thomas Bernard <miniupnp@free.fr>
Date: Sat, 4 Jan 2020 17:28:01 +0100
Subject: [PATCH] fix for building under macOS

---
 src/ifformat.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/ifformat.c b/src/ifformat.c
index 4e3e9d91..1573abb9 100644
--- a/src/ifformat.c
+++ b/src/ifformat.c
@@ -45,6 +45,13 @@
 #endif
 #endif
 
+#ifdef __APPLE__
+#include <libkern/OSByteOrder.h>
+#ifndef be32toh
+#define be32toh(x) OSSwapBigToHostInt32(x)
+#endif
+#endif
+
 //////////////////////////////////// IFF ////////////////////////////////////
 /** @defgroup IFF Interchange File Format
  * @ingroup loadsaveformats