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fp-fix-timestamps(1)


NAME

   fp-fix-timestamps - helper script for the Free Pascal stack in Debian

SYNOPSIS

   fp-fix-timestamps check|update|touch

DESCRIPTION

   fp-fix-timestamps  is meant to be used by Debian source packages in the
   Free Pascal stack. The primary location for  use  is  the  debian/rules
   file.  The aim of this script is to fix the timestamps of patched files
   (with respect to upstream) that would otherwise  end  up  changing  the
   timestamp stored in ppu files.

   This timestamp in ppu files has two issues:

   1.  It deteriorates reproducible builds.

   2.  Reverse  dependent  packages  that also build ppu files may believe
       that the source has changed and either require recompilation of the
       source or at least require recalculation all the time.

   Currently this script supports three operations.

   1.  touch:  The main operation is to touch the files that are listed in
       debian/source/timestamps to the associated timestamps (in that same
       file).

   2.  check:  When  the  situation  is simple and the only changes in the
       package to the source come from patches, the check  option  can  be
       used  to  verify that the list in debian/source/timestamps is still
       up-to-date in the sense that  all  files  touched  by  patches  are
       listed and that all files listed are touched by patches.

   3.  update:     Similar    to    check,    but    also    update    the
       debian/source/timestamps file.

   When the maintainer  scripts  modify  a  source  file  outside  of  the
   patches,  the  maintainer  is  free  to add those files manually to the
   timestamps file, but then the check and update options  don't  work  as
   expected anymore.

SEE ALSO

   https://wiki.debian.org/ReproducibleBuilds/TimestampsInPPUGeneratedByFPC

AUTHOR

   Paul Gevers <elbrus@debian.org>

                           12 December 2016                    untitled(1)



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