Bug#842203: seabios: please make the build reproducible

[Chris Lamb]

Source: seabios
Version: 1.9.3-2
Severity: wishlist
Tags: patch
User: reproducible-builds at lists.alioth.debian.org
Usertags: timestamps hostname
X-Debbugs-Cc: reproducible-builds at lists.alioth.debian.org

Hi,

Whilst working on the Reproducible Builds effort [0], we noticed
that seabios could not be built reproducibly.

Patch attached.

 [0] https://reproducible-builds.org/


Regards,

-- 
      ,''`.
     : :'  :     Chris Lamb
     `. `'`      lamby at debian.org / chris-lamb.co.uk
       `-
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--- a/debian/patches/reproducible_build.patch	1970-01-01 01:00:00.000000000 +0100
--- b/debian/patches/reproducible_build.patch	2016-10-26 21:53:14.214327793 +0100
@@ -0,0 +1,29 @@
+Description: Make the build reproducible
+Author: Chris Lamb <lamby at debian.org>
+Last-Update: 2016-10-26
+
+--- seabios-1.9.3.orig/scripts/buildversion.py
++++ seabios-1.9.3/scripts/buildversion.py
+@@ -4,7 +4,7 @@
+ # Copyright (C) 2015  Kevin O'Connor <kevin at koconnor.net>
+ #
+ # This file may be distributed under the terms of the GNU GPLv3 license.
+-import sys, os, subprocess, shlex, time, socket, optparse, logging, traceback
++import sys, os, subprocess, shlex, time, socket, optparse, logging, traceback, datetime
+ 
+ VERSION_FORMAT = """
+ /* DO NOT EDIT!  This is an autogenerated file.  See scripts/buildversion.py. */
+@@ -127,6 +127,13 @@ def main():
+     if not cleanbuild:
+         btime = time.strftime("%Y%m%d_%H%M%S")
+         hostname = socket.gethostname()
++        try:
++            btime = datetime.datetime.utcfromtimestamp(
++                int(os.environ['SOURCE_DATE_EPOCH']),
++            ).strftime("%Y%m%d_%H%M%S")
++            hostname = 'generic'
++        except KeyError:
++            pass
+         ver = "%s-%s-%s" % (ver, btime, hostname)
+     write_version(outfile, ver + options.extra, toolstr)
+ 
--- a/debian/patches/series	2016-10-26 21:43:46.718654197 +0100
--- b/debian/patches/series	2016-10-26 21:52:27.932775431 +0100
@@ -1 +1,2 @@
 build-add-fno-pie-to-the-gcc-flags-when-available.patch
+reproducible_build.patch