diff -Nru lighttpd-1.4.31/debian/changelog lighttpd-1.4.31/debian/changelog
--- lighttpd-1.4.31/debian/changelog	2013-03-25 11:01:36.000000000 +0000
+++ lighttpd-1.4.31/debian/changelog	2013-10-15 10:01:00.000000000 +0000
@@ -1,3 +1,10 @@
+lighttpd (1.4.31-3ubuntu3) saucy; urgency=low
+
+  * Use the autotools-dev dh addon to update config.guess/config.sub for
+    arm64.
+
+ -- Colin Watson <cjwatson@ubuntu.com>  Tue, 15 Oct 2013 11:01:00 +0100
+
 lighttpd (1.4.31-3ubuntu2) raring; urgency=low
 
   * Import change from debian version 1.4.31-4:
diff -Nru lighttpd-1.4.31/debian/control lighttpd-1.4.31/debian/control
--- lighttpd-1.4.31/debian/control	2012-12-06 14:54:57.000000000 +0000
+++ lighttpd-1.4.31/debian/control	2013-10-15 10:00:52.000000000 +0000
@@ -11,7 +11,8 @@
  zlib1g-dev, libbz2-dev, libattr1-dev, libpcre3-dev, libmysqlclient-dev,
  libgamin-dev, libldap2-dev, libfcgi-dev, libgdbm-dev, libmemcache-dev,
  liblua5.1-0-dev, pkg-config, uuid-dev, libsqlite3-dev,
- libxml2-dev, libkrb5-dev, perl, dpkg-dev (>= 1.16.1~), automake, libtool
+ libxml2-dev, libkrb5-dev, perl, dpkg-dev (>= 1.16.1~), automake, libtool,
+ autotools-dev
 Vcs-Svn: svn://svn.debian.org/pkg-lighttpd/lighttpd/trunk
 Vcs-Browser: http://anonscm.debian.org/viewvc/pkg-lighttpd/lighttpd/trunk/
 Standards-Version: 3.9.3.1
diff -Nru lighttpd-1.4.31/debian/rules lighttpd-1.4.31/debian/rules
--- lighttpd-1.4.31/debian/rules	2012-12-06 14:54:05.000000000 +0000
+++ lighttpd-1.4.31/debian/rules	2013-10-15 10:00:41.000000000 +0000
@@ -1,7 +1,7 @@
 #!/usr/bin/make -f
 
 %:
-	dh $@
+	dh $@ --with autotools_dev
 
 override_dh_auto_configure:
 	dh_auto_configure -- \