$NetBSD: patch-auto_os_conf,v 1.1 2021/02/14 11:56:57 otis Exp $

Move _XOPEN_SOURCE to CFLAGS

--- auto/os/conf.orig	2020-11-19 18:12:30.000000000 +0000
+++ auto/os/conf
@@ -98,6 +98,9 @@ case "$NXT_SYSTEM" in
         NXT_LIBM="-lm"
         NXT_LIBS="-lsocket $NXT_LIBSENDFILE"
         NXT_LIBS="$NXT_LIBS $NXT_LIBRT $NXT_LIBDL $NXT_PTHREAD"
+
+	NXT_CFLAGS="$NXT_CFLAGS -D_XOPEN_SOURCE"
+	NXT_CFLAGS="$NXT_CFLAGS -D_XOPEN_SOURCE_EXTENDED=1 -D__EXTENSIONS__"
     ;;
 
     Darwin)