From 4bcc8683315ceaabdc5309e8a012e9ca016453d5 Mon Sep 17 00:00:00 2001
From: Sam Hocevar <sam@hocevar.net>
Date: Tue, 27 Oct 2009 00:01:25 +0000
Subject: [PATCH] Undefine _XOPEN_SOURCE before redefining it.

---
 src/lib-mem.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/lib-mem.c b/src/lib-mem.c
index 0ba641b..2571509 100644
--- a/src/lib-mem.c
+++ b/src/lib-mem.c
@@ -39,6 +39,7 @@
 #define _DARWIN_C_SOURCE
 /* Use this to get posix_memalign */
 #if defined HAVE_POSIX_MEMALIGN
+#   undef _XOPEN_SOURCE
 #   define _XOPEN_SOURCE 600
 #endif