--- a/configure.ac	2016-08-28 14:15:10.982741458 +0100
--- b/configure.ac	2016-08-28 14:19:35.129329627 +0100
@@ -7,10 +7,14 @@
 
 AC_SUBST(VERSION)
 
-ISODATE=`date +%Y-%m-%d`
+if test "x$SOURCE_DATE_EPOCH" = "x"; then
+    YEAR=`date +%Y`
+    ISODATE=`date +%Y-%m-%d`
+else
+    YEAR=`date -u -d "@$SOURCE_DATE_EPOCH" "+%Y" 2>/dev/null || date -u -r "$SOURCE_DATE_EPOCH" "+%Y" 2>/dev/null || date -u "+%Y"`
+    ISODATE=`date -u -d "@$SOURCE_DATE_EPOCH" "+%Y-%m-%d" 2>/dev/null || date -u -r "$SOURCE_DATE_EPOCH" "+%Y-%m-%d" 2>/dev/null || date -u "+%Y-%m-%d"`
+fi
 AC_SUBST(ISODATE)
-
-YEAR=`date +%Y`
 AC_DEFINE_UNQUOTED(YEAR, $YEAR, [year when build])
 
 dnl Checks for programs.
--- a/debian/control	2016-08-28 14:15:10.982741458 +0100
--- b/debian/control	2016-08-28 14:16:49.675708350 +0100
@@ -2,7 +2,7 @@
 Section: x11
 Priority: optional
 Maintainer: Stefan Pfetzing <dreamind@dreamind.de>
-Build-Depends: debhelper (>= 7), x11proto-core-dev, libxpm-dev, libxext-dev, libx11-dev, libsm-dev, libice-dev
+Build-Depends: debhelper (>= 7), x11proto-core-dev, libxpm-dev, libxext-dev, libx11-dev, libsm-dev, libice-dev, autotools-dev
 Standards-Version: 3.8.4
 
 Package: oroborus
--- a/debian/rules	2016-08-28 14:15:10.982741458 +0100
--- b/debian/rules	2016-08-28 16:03:04.337655351 +0100
@@ -5,6 +5,7 @@
 configure: configure-stamp
 configure-stamp:
 	dh_testdir
+	dh_autotools-dev_updateconfig
 	# Run the configure
 	./configure --prefix=/usr --mandir=/usr/share/man
 	touch configure-stamp
@@ -20,6 +21,7 @@
 #	dh_testroot
 	rm -f build-stamp configure-stamp
 	[ ! -f Makefile ] || $(MAKE) distclean
+	dh_autotools-dev_restoreconfig
 	dh_clean
 
 install: DH_OPTIONS=