[Reproducible-builds] Bug#792995: abook: please make the build reproducible

[Maria Valentina Marin]

Source: abook
Version: 0.6.0~pre2-4
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 abook 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



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diff -Nru abook-0.6.0~pre2/debian/changelog abook-0.6.0~pre2/debian/changelog
--- abook-0.6.0~pre2/debian/changelog	2015-07-07 17:39:52.000000000 +0200
+++ abook-0.6.0~pre2/debian/changelog	2015-07-15 20:06:33.000000000 +0200
@@ -1,3 +1,10 @@
+abook (0.6.0~pre2-4.1) UNRELEASED; urgency=medium
+
+  * Non-maintainer upload.
+  * Fix mtimes before building binary packages to produce reproducible output
+
+ -- akira <marivalenm at gmail.com>  Wed, 15 Jul 2015 20:06:12 +0200
+
 abook (0.6.0~pre2-4) unstable; urgency=medium
 
   [ Rhonda D'Vine ]
diff -Nru abook-0.6.0~pre2/debian/rules abook-0.6.0~pre2/debian/rules
--- abook-0.6.0~pre2/debian/rules	2015-07-06 18:34:40.000000000 +0200
+++ abook-0.6.0~pre2/debian/rules	2015-07-15 20:06:07.000000000 +0200
@@ -13,6 +13,8 @@
 QUILT_STAMPFN = patch-stamp
 include /usr/share/quilt/quilt.make
 
+BUILD_DATE := $(shell dpkg-parsechangelog --show-field Date)
+
 CFLAGS = -g -Wall -std=gnu89
 INSTALL = install
 INSTALL_FILE    = $(INSTALL) -p    -oroot -groot -m644
@@ -101,6 +103,8 @@
 		-p$(PKG) -P$(TMP)
 	cd $(TMP) && find * -type f ! -regex '^DEBIAN/.*' -print0 | \
 		xargs -r0 md5sum > DEBIAN/md5sums
+	find $(TMP) -newermt '$(BUILD_DATE)' -print0 | \
+		xargs -0r touch --no-dereference --date='$(BUILD_DATE)'
 	dpkg --build $(TMP) ..