2007-04-16  Ulrich Drepper  <drepper@redhat.com>

	[BZ #4364]
	* posix/unistd.h (_XOPEN_VERSION): Define appropriately for SUSv3.

--- libc/posix/unistd.h	9 Nov 2006 21:51:58 -0000	1.148
+++ libc/posix/unistd.h	16 Apr 2007 23:44:06 -0000	1.149
@@ -56,7 +56,9 @@ __BEGIN_DECLS
 #define _POSIX2_LOCALEDEF       200112L
 
 /* X/Open version number to which the library conforms.  It is selectable.  */
-#ifdef __USE_UNIX98
+#ifdef __USE_XOPEN2K
+# define _XOPEN_VERSION	600
+#elif defined __USE_UNIX98
 # define _XOPEN_VERSION	500
 #else
 # define _XOPEN_VERSION	4