From bfa8d3572d3a5aedfe2e1a02fd26b2e998155a46 Mon Sep 17 00:00:00 2001
From: Masc Guy <mascguy@github.com>
Date: Tue, 8 Dec 2020 16:16:06 -0500
Subject: [PATCH] Mame: Fix compilation errors in 'posixfile.cpp', for older
 MacOS/Xcode releases

---
 src/osd/modules/file/posixfile.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/osd/modules/file/posixfile.cpp b/src/osd/modules/file/posixfile.cpp
index 4f56a8432d4..764b148bc7d 100644
--- a/src/osd/modules/file/posixfile.cpp
+++ b/src/osd/modules/file/posixfile.cpp
@@ -37,6 +37,11 @@
 #endif
 #endif
 
+// Fix for MacOS compilation errors
+#if defined(__APPLE__) && !defined(_DARWIN_C_SOURCE)
+#define _DARWIN_C_SOURCE
+#endif
+
 // MAME headers
 #include "posixfile.h"
 #include "unicode.h"