From 40733239a79b5fd1c761e03942044a1b5a39bc36 Mon Sep 17 00:00:00 2001
From: Ruediger Meier
Date: Thu, 18 Feb 2016 16:37:13 +0100
Subject: include: provide MAP_ANONYMOUS on OSX

Hope there are no side effect when defining _DARWIN_C_SOURCE
globally.

Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
---
 include/c.h | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'include/c.h')

diff --git a/include/c.h b/include/c.h
index ca028baee..aec34394d 100644
--- a/include/c.h
+++ b/include/c.h
@@ -355,4 +355,12 @@ static inline int xusleep(useconds_t usec)
  */
 #define UL_GETPW_BUFSIZ	(16 * 1024)
 
+/*
+ * Darwin or other BSDs may only have MAP_ANON. To get it on Darwin we must
+ * define _DARWIN_C_SOURCE before including sys/mman.h. We do this in config.h.
+ */
+#if !defined MAP_ANONYMOUS && defined MAP_ANON
+# define MAP_ANONYMOUS  (MAP_ANON)
+#endif
+
 #endif /* UTIL_LINUX_C_H */
-- 
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