Source: elida
Version: 0.4+nmu1
Severity: wishlist
Tags: patch
User: reproducible-builds@lists.alioth.debian.org
Usertags: timestamps
X-Debbugs-Cc: reproducible-builds@lists.alioth.debian.org

Hi!

While working on the “reproducible builds” effort [1], we have noticed
that elida 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.

Cheers,
akira

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


diff -Nru elida-0.4+nmu1/debian/changelog elida-0.4+nmu2/debian/changelog
--- elida-0.4+nmu1/debian/changelog     2010-03-19 09:55:42.000000000 +0100
+++ elida-0.4+nmu2/debian/changelog     2015-07-17 17:58:58.000000000 +0200
@@ -1,3 +1,10 @@
+elida (0.4+nmu2) UNRELEASED; urgency=medium
+
+  * Non-maintainer upload.
+  * Fix mtimes before building binary packages to produce reproducible output 
+
+ -- akira <marival...@gmail.com>  Fri, 17 Jul 2015 17:58:37 +0200
+
 elida (0.4+nmu1) unstable; urgency=low
 
   * Non-maintainer upload to fix release goal.
diff -Nru elida-0.4+nmu1/debian/rules elida-0.4+nmu2/debian/rules
--- elida-0.4+nmu1/debian/rules 2009-07-05 05:11:47.000000000 +0200
+++ elida-0.4+nmu2/debian/rules 2015-07-17 17:58:30.000000000 +0200
@@ -3,6 +3,8 @@
 P = elida
 T = debian/tmp
 
+BUILD_DATE := $(shell dpkg-parsechangelog --show-field Date)
+
 build:
 
 binary: binary-arch binary-indep
@@ -34,6 +36,8 @@
        dpkg-gencontrol -isp
        chown -R root.root $T
        chmod -R o-s,go=u,go-ws $T
+       find debian/tmp -newermt '$(BUILD_DATE)' -print0 | \
+               xargs -0r touch --no-dereference --date='$(BUILD_DATE)'
        dpkg --build $T ..
 
 binary-arch:
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