From 7f8f5ad63345517bae716bcaa531c60738497edd Mon Sep 17 00:00:00 2001
From: Jakub Wieczorek <fawek@fawek.net>
Date: Sun, 26 Feb 2012 15:10:42 +0100
Subject: [PATCH] Fix the build on Mac OS X, where features.h is non-existent

---
 src/config.h | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/src/config.h b/src/config.h
index 2bf0f9340..6a69364a9 100644
--- a/src/config.h
+++ b/src/config.h
@@ -97,11 +97,10 @@
 #endif
 
 #if (__i386 || __amd64) && __GNUC__
-    #include <features.h>
-
-    #if __GNUC_PREREQ(4,1)
-        #define HAVE_ATOMIC
-    #endif
+#define GNUC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
+#if GNUC_VERSION >= 40100
+#define HAVE_ATOMIC
+#endif
 #endif