[Reproducible-builds] Bug#793717: rungetty: please make the mtimes reproducible

[Maria Valentina Marin]

Source: rungetty
Version: 1.2-15
Severity: wishlist
Tags: patch
User: reproducible-builds at lists.alioth.debian.org
Usertags: timestamps
X-Debbugs-Cc: reproducible-builds at lists.alioth.debian.org

Hi!

While working on the “reproducible builds” effort [1], we have noticed
that rungetty could not be built reproducibly.

The attached patch sets the mtimes of all files which are modified
during the built to the date of the last changelog entry in order to
produce files with reproducible metadata. Please also consider this
other bug from the reproducible builds team:
https://bugs.debian.org/777447

Cheers,
akira

[1]: https://wiki.debian.org/ReproducibleBuilds

-------------- next part --------------
diff -u rungetty-1.2/debian/rules rungetty-1.2/debian/rules
--- rungetty-1.2/debian/rules
+++ rungetty-1.2/debian/rules
@@ -25,6 +25,7 @@
 	STRIP = true
 endif
 
+export SOURCE_DATE_EPOCH = $(shell date -d "$$(dpkg-parsechangelog --count 1 -SDate)" +%s)
 
 include /usr/share/quilt/quilt.make
 
@@ -84,6 +85,8 @@
 		-p$(PKG) -P$(TMP)
 	cd $(TMP) && find * -type f ! -regex '^DEBIAN/.*' -print0 | \
 		xargs -r0 md5sum > DEBIAN/md5sums
+	find $(TMP) -newermt "@$$SOURCE_DATE_EPOCH" -print0 | \
+		xargs -0r touch --no-dereference --date="@$$SOURCE_DATE_EPOCH"
 	dpkg --build $(TMP) ..
 
 
diff -u rungetty-1.2/debian/changelog rungetty-1.2/debian/changelog
--- rungetty-1.2/debian/changelog
+++ rungetty-1.2/debian/changelog
@@ -1,3 +1,10 @@
+rungetty (1.2-15.1) UNRELEASED; urgency=medium
+
+  * Non-maintainer upload.
+  * Fix mtimes before building binary packages to produce reproducible output
+
+ -- akira <marivalenm at gmail.com>  Sat, 25 Jul 2015 15:15:25 +0200
+
 rungetty (1.2-15) unstable; urgency=high
 
   * Using patch in the proper place to make sure building does happen after
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 819 bytes
Desc: OpenPGP digital signature
URL: <http://lists.alioth.debian.org/pipermail/reproducible-builds/attachments/20150726/2550f287/attachment.sig>