On Fri, Jan 20, 2017 at 01:51:18PM +0100, Ladislav Slezak wrote:
> Dne 19.1.2017 v 14:20 Ludwig Nussel napsal(a):
> [...]
> > No idea :-) You'd have to try to see if the result is identical.
>
> I have tried that tar command manually and it works, the recreated
> tarball has the same SHA1 sum.
>
> But it is be a bit tricky to incorporate this into the rake task.
>
> We use the standard Rake::PackageTask class for this, it allows
> to optionally specify the "tar" command, but it does not allow
> to pass additional parameters :-(
>
> I tried a trick with tar_command = "tar --mtime=@0 --owner=0 ..."
> but that does not work as the options must be placed after the
> "jcfv" command otherwise it fails with an argument error.
>
>
> So my PoC solution [1] simply creates the target directory
> and builds the tarball with Rake::PackageTask and then repackages the
> directory again using the extra tar options.
>
> The only drawback is that the files in the tarball have zero timestamps
> (01-01-1970), which IMO is not nice as sometimes they are useful :-(
Set the file timestamps to the last file modification in
git. That should give useful timestamps and identical tars.
ciao Arvin
PS: In general setting the timestamps is considered "stupid"
since it breaks 'make'.
--
Arvin Schnell, <[email protected]>
Senior Software Engineer, Research & Development
SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284
(AG Nürnberg)
Maxfeldstraße 5
90409 Nürnberg
Germany
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