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From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: GCC bootstrap failure on ARM
Date: Mon, 12 Sep 2016 23:17:12 +0200
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In-Reply-To: <8760q3opyl.fsf@gnu.org> ("Ludovic
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To: Mark H Weaver <mhw@netris.org>
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ludo@gnu.org (Ludovic Court=C3=A8s) skribis:

> ludo@gnu.org (Ludovic Court=C3=A8s) skribis:

[...]

>> For the record, this is how far I got with GCC 5:
>>
>>   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D71399
>
> I=E2=80=99ve made some progress on this, as reported on bugzilla.  I=E2=
=80=99m now
> trying to bisect the issue; however, since the bootstrapping failure of
> gcc-final is due to a problem that manifests in gcc-boot0, that=E2=80=99s=
 a lot
> of rebuild, and the machine I=E2=80=99m using (redhill) is slow.
>
> Anyway, we=E2=80=99ll have a patch reverting a few 4.9.3-to-4.9.4 commits=
, and
> that=E2=80=99ll allow us to proceed.  I=E2=80=99d like to reduce that pat=
ch as much as
> possible, but I=E2=80=99d like to stop researching by the end of next wee=
k so we
> can then freeze core-updates.

=E2=80=98core-updates=E2=80=99 is now building with a tiny patch on gcc-4.9=
 (in fact
it=E2=80=99s enough to apply it to gcc-cross-boot0, which is interesting):

  https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D71399#c12

Ludo=E2=80=99.