From 18f8c7bc61fa28236b1b479e4613ab04808b91f1 Mon Sep 17 00:00:00 2001
From: Connor McLaughlin <stenzek@gmail.com>
Date: Fri, 30 Oct 2020 00:57:15 +1000
Subject: [PATCH] dep/zlib: Mac build fix again

---
 dep/zlib/src/gzguts.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/dep/zlib/src/gzguts.h b/dep/zlib/src/gzguts.h
index 990a4d251..1b56c48a5 100644
--- a/dep/zlib/src/gzguts.h
+++ b/dep/zlib/src/gzguts.h
@@ -37,6 +37,8 @@
 
 #if defined(__TURBOC__) || defined(_MSC_VER) || defined(_WIN32)
 #  include <io.h>
+#else
+#  include <unistd.h>
 #endif
 
 #if defined(_WIN32) || defined(__CYGWIN__)