linux-kernel - Re: [PATCH v2] kheaders: making headers archive reproducible

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Message-ID: <CAK7LNASwrKohUUY22Ru06DcG5nUpqRJW3ZjZR+2BZYsX8hfvJw@mail.gmail.com>
Date:   Tue, 8 Oct 2019 17:14:51 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     Dmitry Goldin <dgoldin@...tonmail.ch>
Cc:     Andreas Schwab <schwab@...ux-m68k.org>,
        Greg KH <gregkh@...uxfoundation.org>,
        "linux-kernel\\@vger.kernel.org" <linux-kernel@...r.kernel.org>,
        "joel\\@joelfernandes.org" <joel@...lfernandes.org>,
        Ben Hutchings <ben@...adent.org.uk>
Subject: Re: [PATCH v2] kheaders: making headers archive reproducible

On Tue, Oct 8, 2019 at 5:07 PM Dmitry Goldin <dgoldin@...tonmail.ch> wrote:
>
> Hi,
>
> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
> On Monday, October 7, 2019 2:26 PM, Andreas Schwab <schwab@...ux-m68k.org> wrote:
>
> > On Okt 07 2019, Greg KH gregkh@...uxfoundation.org wrote:
> >
> > > On Mon, Oct 07, 2019 at 01:49:47PM +0200, Andreas Schwab wrote:
> > >
> > > > GEN kernel/kheaders_data.tar.xz
> > > > tar: unrecognized option '--sort=name'
> > > > Try `tar --help' or`tar --usage' for more information.
> > > > make[2]: *** [kernel/kheaders_data.tar.xz] Error 64
> > > > make[1]: *** [kernel] Error 2
> > > > make: *** [sub-make] Error 2
> > > > $ tar --version
> > > > tar (GNU tar) 1.26
> > > > Copyright (C) 2011 Free Software Foundation, Inc.
> > >
> > > Wow that's an old version of tar. 2011? What happens if you use a more
> > > modern one?
> >
> > That's the most modern I have available on that machine.
>
> Hmm. --sort was introduced in 1.28 in 2014. Do you think it would warrant some sort of version check and fallback or is this something we can expect the user to handle if their distribution happens to not ship anything more recent? A few sensible workarounds come to mind.

I think the former.

The release in 2014 is quite new, so
we can not always expect it on the users' system.




>
> In any case, likely it would make sense to at least update to https://github.com/torvalds/linux/blob/master/Documentation/process/changes.rst with the minimal version we decide on.
>
>
> Dmitry



-- 
Best Regards
Masahiro Yamada