[Reproducible-builds] Bug#792989: freecdb: please make the build reproducible

[Maria Valentina Marin]

Source: freecdb
Version: 0.75
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 freecdb 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


-------------- next part --------------
diff -Nru freecdb-0.75/debian/changelog freecdb-0.75+nmu1/debian/changelog
--- freecdb-0.75/debian/changelog	2006-01-13 22:12:00.000000000 +0100
+++ freecdb-0.75+nmu1/debian/changelog	2015-07-19 13:45:25.000000000 +0200
@@ -1,3 +1,10 @@
+freecdb (0.75+nmu1) UNRELEASED; urgency=medium
+
+  * Non-maintainer upload.
+  * Fix mtimes before building binary packages to produce reproducible output 
+
+ -- akira <marivalenm at gmail.com>  Sun, 19 Jul 2015 13:45:01 +0200
+
 freecdb (0.75) unstable; urgency=low
 
   * take over upstream (closes: #272127).
diff -Nru freecdb-0.75/debian/rules freecdb-0.75+nmu1/debian/rules
--- freecdb-0.75/debian/rules	2006-01-13 22:12:00.000000000 +0100
+++ freecdb-0.75+nmu1/debian/rules	2015-07-19 13:44:58.000000000 +0200
@@ -12,6 +12,8 @@
 
 DIR =$(shell pwd)/debian/freecdb
 
+BUILD_DATE := $(shell dpkg-parsechangelog --show-field Date)
+
 build: deb-checkdir build-stamp
 build-stamp: 
 	$(MAKE) CC='$(CC)'
@@ -40,6 +42,8 @@
 binary-arch: install freecdb.deb
 	test '$(CC)' != 'gcc' || dpkg-shlibdeps '$(DIR)'/usr/bin/*
 	dpkg-gencontrol -isp -pfreecdb -P'$(DIR)'
+	find '$(DIR)' -newermt '$(BUILD_DATE)' -print0 | \
+		xargs -0r touch --no-dereference --date='$(BUILD_DATE)'
 	dpkg -b '$(DIR)' ..
 
 binary: binary-indep binary-arch