$NetBSD: patch-sigscheme_configure,v 1.1 2014/04/20 14:51:41 ryoon Exp $

--- sigscheme/configure.orig	2013-06-30 04:27:03.000000000 +0000
+++ sigscheme/configure
@@ -16003,7 +16003,7 @@ if test "x$ac_cv_func_strdup" = xyes; th
 _ACEOF
 
     # Overrides _POSIX_C_SOURCE
-    $as_echo "#define _XOPEN_SOURCE 500" >>confdefs.h
+    $as_echo "#define _XOPEN_SOURCE 600" >>confdefs.h
 
 
 fi