$NetBSD: patch-configure,v 1.2 2018/08/26 19:35:42 schmonz Exp $

Lower _XOPEN_SOURCE to fix SmartOS build.

--- configure.orig	2018-05-03 07:14:29.000000000 +0000
+++ configure
@@ -211,7 +211,7 @@ trylibs () {
 # Actual script
 
 CC_AUTO=
-CPPFLAGS_AUTO="-D_POSIX_C_SOURCE=200809L -D_XOPEN_SOURCE=700 -Isrc/include"
+CPPFLAGS_AUTO="-D_POSIX_C_SOURCE=200809L -D_XOPEN_SOURCE=600 -Isrc/include"
 CPPFLAGS_POST="$CPPFLAGS"
 CPPFLAGS=
 CFLAGS_AUTO="-pipe -Wall"
