[Reproducible-builds] Bug#788752: analog: please make the build reproducible

[Dhole]

Source: analog
Version: 2:6.0-20
Severity: wishlist
Tags: patch
User: reproducible-builds at lists.alioth.debian.org
Usertags: timestamps

Hi!

While working on the “reproducible builds” effort [1], we have noticed
that analog could not be built reproducibly.

The attached patch removes extra timestamps from the build system.
Specifically, the patch avoids the the usage of the __DATE__ and
__TIME__ C macro which embed timestamps during the compilation and make
the package build unreproducible.
Once applied, analog can be built reproducibly in our current
experimental framework.

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

-- 
Dhole
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diff -u analog-6.0/debian/changelog analog-6.0/debian/changelog
--- analog-6.0/debian/changelog
+++ analog-6.0/debian/changelog
@@ -1,3 +1,10 @@
+analog (2:6.0-22) UNRELEASED; urgency=medium
+
+  * Non-maintainer upload.
+  * Remove timestamp from outxml.c to make package build reproducibly
+
+ -- Dhole <dhole at openmailbox.org>  Sat, 13 Jun 2015 21:05:32 +0200
+
 analog (2:6.0-20) unstable; urgency=low
 
   * QA upload.
only in patch2:
unchanged:
--- analog-6.0.orig/src/outxml.c
+++ analog-6.0/src/outxml.c
@@ -54,7 +54,6 @@
 	extern timecode_t starttimec;
 
         unsigned int year, month, day, i;
-	struct tm temptime;
 
         char *xmlversion = "1.0";
         char *encoding = "UTF-8";
@@ -85,15 +84,10 @@
 	xml_defaults( opts );
 
 	// extract a build timestamp from __DATE__ and __TIME__ -- locale dependent?! need to force "C" locale ?
-	strptime( __DATE__" "__TIME__, "%b%n%d%n%Y%n%T", &temptime );
-
-	sprintf( buffer, "%04d%02d%02d%02d%02d",
-	temptime.tm_year+1900, temptime.tm_mon+1, temptime.tm_mday, temptime.tm_hour, temptime.tm_min );
 
         code2date( starttimec/1440, &day, &month, &year);
-	
+
 	XML_OUT( XMLDBG "<property name=\"version\" content=\"%s\"/>", VERSION );
-	XML_OUT( XMLDBG "<property name=\"built\" content=\"%s\"/>", buffer );
 	XML_OUT( XMLDBG "<property name=\"starttime\" content=\"%04d%02d%02d%02d%02d\"/> ",
                 year, month+1, day, (int)((starttimec%1440)/60), (int)(starttimec%60) );
 
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