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From:   Masahiro Yamada <yamada.masahiro@socionext.com>
Date:   Tue, 8 Oct 2019 17:14:51 +0900
Message-ID: <CAK7LNASwrKohUUY22Ru06DcG5nUpqRJW3ZjZR+2BZYsX8hfvJw@mail.gmail.com>
Subject: Re: [PATCH v2] kheaders: making headers archive reproducible
To:     Dmitry Goldin <dgoldin@protonmail.ch>
Cc:     Andreas Schwab <schwab@linux-m68k.org>,
        Greg KH <gregkh@linuxfoundation.org>,
        "linux-kernel\\@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "joel\\@joelfernandes.org" <joel@joelfernandes.org>,
        Ben Hutchings <ben@decadent.org.uk>
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On Tue, Oct 8, 2019 at 5:07 PM Dmitry Goldin <dgoldin@protonmail.ch> wrote:
>
> Hi,
>
> =E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90 Original =
Message =E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90
> On Monday, October 7, 2019 2:26 PM, Andreas Schwab <schwab@linux-m68k.org=
> wrote:
>
> > On Okt 07 2019, Greg KH gregkh@linuxfoundation.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=3Dname'
> > > > 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 mor=
e
> > > 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://git=
hub.com/torvalds/linux/blob/master/Documentation/process/changes.rst with t=
he minimal version we decide on.
>
>
> Dmitry


--=20
Best Regards
Masahiro Yamada