[Reproducible-builds] Bug#792993: cgoban: please make the build reproducible

[Maria Valentina Marin]

Source: cgoban
Version: 1.9.14-17
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 cgoban 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. Once applied, cgoban can be
built reproducibly in our current experimental framework.


Cheers,
akira

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



-------------- next part --------------
diff -Nru cgoban-1.9.14/debian/changelog cgoban-1.9.14/debian/changelog
--- cgoban-1.9.14/debian/changelog	2012-05-06 20:31:51.000000000 +0200
+++ cgoban-1.9.14/debian/changelog	2015-07-14 11:33:04.000000000 +0200
@@ -1,3 +1,11 @@
+cgoban (1.9.14-17.1) UNRELEASED; urgency=medium
+
+  * Non-maintainer upload.
+  * Fix mtimes before building binary packages to produce reproducible
+    output
+
+ -- akira <marivalenm at gmail.com>  Tue, 14 Jul 2015 11:32:08 +0200
+
 cgoban (1.9.14-17) unstable; urgency=low
 
   * Fixed crash on maximization, closes: #387209.
diff -Nru cgoban-1.9.14/debian/rules cgoban-1.9.14/debian/rules
--- cgoban-1.9.14/debian/rules	2012-05-06 20:31:30.000000000 +0200
+++ cgoban-1.9.14/debian/rules	2015-07-14 14:34:19.000000000 +0200
@@ -3,6 +3,8 @@
 testdir  = test -f src/goBoard.c && test -f debian/rules
 testroot = test x`whoami` = xroot
 
+BUILD_DATE := $(shell dpkg-parsechangelog --show-field Date)
+
 # FOR AUTOCONF 2.52 AND NEWER ONLY
 ifeq ($(DEB_BUILD_GNU_TYPE), $(DEB_HOST_GNU_TYPE))
 	CONFFLAGS += --build $(DEB_HOST_GNU_TYPE)
@@ -72,6 +74,8 @@
 	dpkg-shlibdeps debian/cgoban/usr/games/cgoban
 	dpkg-gencontrol -isp -pcgoban -Pdebian/cgoban
 	chmod -R u+w,go=u-w debian/cgoban
+	find debian/cgoban -newermt '$(BUILD_DATE)' -print0 | \
+		xargs -0r touch --no-dereference --date='$(BUILD_DATE)'
 	dpkg --build debian/cgoban ..
 
 .PHONY: clean binary binary-arch binary-indep