From 433edd0eea934e25f6e97aaf912ebed191fa41d1 Mon Sep 17 00:00:00 2001
From: Antonin Descampe <antonin@descampe.net>
Date: Thu, 31 Dec 2020 11:06:28 +0100
Subject: [PATCH] patch provided 3rdparty zlib to work with MacOS

---
 thirdparty/libz/gzguts.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/thirdparty/libz/gzguts.h b/thirdparty/libz/gzguts.h
index d87659d0..fb919855 100644
--- a/thirdparty/libz/gzguts.h
+++ b/thirdparty/libz/gzguts.h
@@ -3,6 +3,8 @@
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
+#include <unistd.h>
+
 #ifdef _LARGEFILE64_SOURCE
 #  ifndef _LARGEFILE_SOURCE
 #    define _LARGEFILE_SOURCE 1