From 50660a2c94f9b3c7c7ff41e36b537e872decad30 Mon Sep 17 00:00:00 2001
From: ludde <ludde@openttd.org>
Date: Wed, 20 Jul 2005 09:35:05 +0000
Subject: [PATCH] (svn r2648) Only use _stdcall calling convention for zlib on
 win32/msvc.

---
 saveload.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/saveload.c b/saveload.c
index 365f0b4967..fdc4d58479 100644
--- a/saveload.c
+++ b/saveload.c
@@ -905,7 +905,12 @@ static void WriteMem(uint size)
 //********************************************
 
 #if defined(WITH_ZLIB)
-#define ZLIB_WINAPI // Needed so zlib uses the right calling convention.
+
+// This is needed to zlib uses the stdcall calling convention on visual studio
+#ifdef _MSC_VER
+#define ZLIB_WINAPI
+#endif
+
 #include <zlib.h>
 static z_stream _z;