diff -Nru libaunit-3.7.1/debian/changelog libaunit-3.7.1/debian/changelog
--- libaunit-3.7.1/debian/changelog	2014-08-19 03:25:30.000000000 +0000
+++ libaunit-3.7.1/debian/changelog	2015-05-03 18:18:07.000000000 +0000
@@ -1,3 +1,11 @@
+libaunit (3.7.1-2) unstable; urgency=medium
+
+  * For reproducible PDF timestamps, set clock to the date of this entry.
+    Touch generated sources for deterministic ALI files and tar headers.
+  * Standards-Version: 3.9.6 (no changes).
+
+ -- Nicolas Boulenguez <nicolas@debian.org>  Sun, 03 May 2015 16:49:18 +0200
+
 libaunit (3.7.1-1) unstable; urgency=medium
 
   * New upstream release, built with gnat-4.9 (closes:  #748998, #755078).
diff -Nru libaunit-3.7.1/debian/control libaunit-3.7.1/debian/control
--- libaunit-3.7.1/debian/control	2014-08-18 23:33:46.000000000 +0000
+++ libaunit-3.7.1/debian/control	2015-05-03 18:16:13.000000000 +0000
@@ -8,8 +8,10 @@
 Build-Depends-Indep:
 # To deduplicate examples in rules.
  rdfind, symlinks,
+# Called in rules for deterministic PDF timestamps.
+ faketime,
  texinfo, texlive-latex-base
-Standards-Version: 3.9.5
+Standards-Version: 3.9.6
 Homepage: http://libre.adacore.com/libre/
 Vcs-Mtn: www.ada-france.org org.debian.libaunit
 Vcs-Browser: http://www.ada-france.org:8081/branch/changes/org.debian.libaunit
diff -Nru libaunit-3.7.1/debian/copyright libaunit-3.7.1/debian/copyright
--- libaunit-3.7.1/debian/copyright	2014-08-18 22:01:48.000000000 +0000
+++ libaunit-3.7.1/debian/copyright	2015-05-03 17:55:26.000000000 +0000
@@ -17,7 +17,7 @@
 
 Files: debian/*
 Copyright: 2006-2012 Stephen Leake <stephen_leake@stephe-leake.org>
-         : 2013-2014 Nicolas Boulenguez <nicolas@debian.org>
+         : 2013-2015 Nicolas Boulenguez <nicolas@debian.org>
 License: GPL-3+
 
 License: GPL-3+
diff -Nru libaunit-3.7.1/debian/rules libaunit-3.7.1/debian/rules
--- libaunit-3.7.1/debian/rules	2014-08-19 03:42:01.000000000 +0000
+++ libaunit-3.7.1/debian/rules	2015-05-03 17:55:26.000000000 +0000
@@ -3,7 +3,7 @@
 # Debian Makefile for AUnit
 # Copyright (c) 2009      Stephen Leake <stephen_leake@stephe-leake.org>
 # Copyright (c) 2004-2006 Ludovic Brenta <ludovic@ludovic-brenta.org>
-# Copyright (c) 2013-2014 Nicolas Boulenguez <nicolas@debian.org>
+# Copyright (c) 2013-2015 Nicolas Boulenguez <nicolas@debian.org>
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -21,6 +21,9 @@
 include /usr/share/dpkg/default.mk
 include /usr/share/ada/debian_packaging.mk
 
+DEB_DATE_RFC_2822 := $(shell dpkg-parsechangelog -S date)
+DEB_DATE_RFC_3339 := $(shell date "+%F %T" -d "$(DEB_DATE_RFC_2822)")
+
 ADAFLAGS += -gnatfno -gnatwa -gnatVa
 
 LIB_NAME := $(patsubst lib%,%,$(DEB_SOURCE))
@@ -44,12 +47,17 @@
 
 PROJECT := lib/gnat/aunit_build.gpr
 override_dh_auto_build-arch:
+ # Touch generated sources for deterministic ALI files and tar headers.
+	find . -depth -newermt '$(DEB_DATE_RFC_3339)' -print0 | \
+	  xargs -0r touch --no-dereference --date='$(DEB_DATE_RFC_3339)'
 	$(MAKE) INSTALL=false \
 	  GPRBUILD='gnatmake $(BUILDER_OPTIONS) -XLIBRARY_KIND=static $(foreach var,ADAFLAGS,"-X$(var)=$($(var))")'
 	$(MAKE) INSTALL=false \
 	  GPRBUILD='gnatmake $(BUILDER_OPTIONS) -XLIBRARY_KIND=dynamic $(foreach var,ADAFLAGS LDFLAGS SOVERSION,"-X$(var)=$($(var))")'
 
 override_dh_auto_build-indep: version_information.backup
+ # Freeze the clock for deterministic PDF timestamps.
+	faketime -f "$(DEB_DATE_RFC_3339)" \
 	$(MAKE) -C docs
 version_information.backup: %.backup: %
 	mv $* $@