$NetBSD: patch-pyconfig.h.in,v 1.2 2013/04/12 09:03:41 adam Exp $

--- pyconfig.h.in.orig	2011-06-11 17:46:28.000000000 +0200
+++ pyconfig.h.in	2011-11-29 20:17:04.328552361 +0100
@@ -1191,7 +1191,9 @@
 #undef _UINT64_T
 
 /* Define to the level of X/Open that your system supports */
+#if !defined(__sun) || (defined(__sun) && !defined(_XOPEN_SOURCE))
 #undef _XOPEN_SOURCE
+#endif
 
 /* Define to activate Unix95-and-earlier features */
 #undef _XOPEN_SOURCE_EXTENDED