From a75d6ea070cedd3afa9865e63127c7ee8946d605 Mon Sep 17 00:00:00 2001
From: Mark Adler <madler@alumni.caltech.edu>
Date: Sat, 18 Feb 2012 15:19:44 -0800
Subject: Require gcc 4.0 or later on Mac OS X to use the hidden attribute.

---
 zutil.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'zutil.h')

diff --git a/zutil.h b/zutil.h
index de42dfb..f422147 100644
--- a/zutil.h
+++ b/zutil.h
@@ -13,7 +13,8 @@
 #ifndef ZUTIL_H
 #define ZUTIL_H
 
-#if ((__GNUC__-0) * 10 + __GNUC_MINOR__-0 >= 33) && !defined(NO_VIZ)
+#define GCC_VER ((__GNUC__-0) * 100 + __GNUC_MINOR__-0)
+#if (GCC_VER >= 303 && !defined(__APPLE__)) || GCC_VER >= 400
 #  define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
 #else
 #  define ZLIB_INTERNAL
-- 
cgit v1.2.3-55-g6feb