bug#41669: Cross-compiled powerpc64-linux bootstrap-tarballs not reproducible

[Efraim Flashner <efraim@flashner.co.il>]

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On Mon, Jan 04, 2021 at 10:37:20AM +0100, Ludovic Courtès wrote:
> Hi,
> 
> Leo Le Bouter <lle-bout@zaclys.net> skribis:
> 
> > On Sat, 2020-12-19 at 23:28 -0800, Chris Marusich wrote:
> >> Now that we have decided to use these powerpc64 bootstrap tarballs,
> >> what
> >> are the next steps for uploading them to the GNU FTP server?  I've
> >> never
> >> done that before, and I don't think I have access.  For now I've put
> >> a
> >> signed copy of the powerpc64-linux (big endian) bootstrap tarballs,
> >> with
> >> a SHA-512 hash, here:
> >> 
> >> https://media.marusich.info/guix-ppc64-bootstrap/bootstrap-tarballs-from-guix-1ced8379c7.tar.xz
> >> https://media.marusich.info/guix-ppc64-bootstrap/bootstrap-tarballs-from-guix-1ced8379c7.tar.xz.asc
> >> https://media.marusich.info/guix-ppc64-bootstrap/bootstrap-tarballs-from-guix-1ced8379c7.tar.xz.sha512sum
> 
> [...]
> 
> > Can you do it? Upload the binaries on GNU FTP server? Little endian
> > binaries will come along shortly as well.
> 
> Sure.  IIUC, the tarballs at the URL above are for PPC64 (system type:
> ‘powerpc64-linux’); is this also going to work on PPC64LE hardware?
> 
> (As you know, we use i386 binaries for both i686-linux and x86_64-linux.
> Likewise, if we can have a single set of binaries instead of having
> PPC32, PPC64, and PPC64LE, that’s better.)

Last I checked the PPC32 binaries aren't working. Even cbmuser from
Debian thinks there may be a glibc bug with glibc-2.32 so I can't test
that much ATM¹.

Rather than effectively needing to wait to add ppc32 and ppc64 at the
same time it'd be better to add them individually and then do any
rebasing necessary to make them both work with ppc32 binaries later.

¹ If my patch fixes it I'll add glibc hacker to my résumé.

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Efraim Flashner   <efraim@flashner.co.il>   אפרים פלשנר
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