$NetBSD: patch-configure,v 1.3 2015/08/22 21:23:46 leot Exp $

Recognize Dragonfly.

--- configure.orig	2014-06-13 18:28:18.000000000 +0000
+++ configure
@@ -11933,6 +11933,11 @@ $as_echo "OpenBSD" >&6; }
 	backend="openbsd"
 	threads="posix"
 	;;
+*-dragonfly*)
+	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: DragonflyBSD (using OpenBSD backend)" >&5
+$as_echo "DragonflyBSD (using OpenBSD backend)" >&6; }
+	backend="openbsd"
+	;;
 *-netbsd*)
 	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: NetBSD" >&5
 $as_echo "NetBSD" >&6; }