[Reproducible-builds] Bug#834735: filepp: please make the output (and build) reproducible

[Chris Lamb]

Source: filepp
Version: 1.8.0-4
Severity: wishlist
Tags: patch
User: reproducible-builds at lists.alioth.debian.org
Usertags: timestamps toolchain
X-Debbugs-Cc: reproducible-builds at lists.alioth.debian.org

Hi,

Whilst working on the Reproducible Builds effort [0], I noticed
that filepp generates unreproducible output.

Patch attached that uses SOURCE_DATE_EPOCH[1] when set. This also makes
the build of filepp itself reproducible.


 [0] https://reproducible-builds.org/
 [1] https://reproducible-builds.org/specs/source-date-epoch/


Regards,

-- 
      ,''`.
     : :'  :     Chris Lamb
     `. `'`      lamby at debian.org / chris-lamb.co.uk
       `-
-------------- next part --------------
--- a/debian/patches/02-reproducible-output-and-build.patch	1970-01-01 01:00:00.000000000 +0100
--- b/debian/patches/02-reproducible-output-and-build.patch	2016-08-18 13:55:58.353514045 +0100
@@ -0,0 +1,15 @@
+Description: Make the build reproducible
+Author: Chris Lamb <lamby at debian.org>
+Last-Update: 2016-08-18
+
+--- filepp-1.8.0.orig/filepp.in
++++ filepp-1.8.0/filepp.in
+@@ -222,7 +222,7 @@ GenerateDefinesKeys();
+ 		      'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec');    
+     #prepare standard defines
+     my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isbst) = 
+-	localtime(time());
++    	defined($ENV{SOURCE_DATE_EPOCH}) ? gmtime($ENV{SOURCE_DATE_EPOCH}) : localtime(time());
+     $year += 1900;
+     $sec  = sprintf("%02d", $sec);
+     $min  = sprintf("%02d", $min);
--- a/debian/patches/series	2016-08-18 13:47:56.517074297 +0100
--- b/debian/patches/series	2016-08-18 13:53:36.740219216 +0100
@@ -1 +1,2 @@
 01-manpage-fixup.patch
+02-reproducible-output-and-build.patch