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Re: lto-plugin: mismatch between ld's architecture and GCC's configure --host

From: Nathanael Nerode <ncn_login at fastmail dot fm>
To: Thomas Schwinge <thomas at codesourcery dot com>
Cc: gcc-patches at gcc dot gnu dot org dot
Date: Tue, 27 May 2014 00:35:36 -0400
Subject: Re: lto-plugin: mismatch between ld's architecture and GCC's configure --host
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References: <87k3hioknw dot fsf at kepler dot schwinge dot homeip dot net> <87a9icno3o dot fsf at kepler dot schwinge dot homeip dot net> <87k3h1g6fn dot fsf at kepler dot schwinge dot homeip dot net> <87habubdma dot fsf at kepler dot schwinge dot homeip dot net> <CAHACq4oH5M9F3C_=-UhNmBiOA3pU60fdc81tJJ-ij4ovsFcyCg at mail dot gmail dot com> <878uwtu3q2 dot fsf at kepler dot schwinge dot homeip dot net> <87y53nr5qr dot fsf at kepler dot schwinge dot homeip dot net> <87zjn4f3nt dot fsf at kepler dot schwinge dot homeip dot net> <87txct5qkn dot fsf at kepler dot schwinge dot homeip dot net> <87mweaw079 dot fsf at kepler dot schwinge dot homeip dot net>

On 05/22/2014 06:56 AM, Thomas Schwinge wrote:

Hi!

Now that GCC again is in development stage, and with fresh hope to have
someone review this patch submission, after having let the issue rest for
several months: I just re-tested the current versions.  Still there are
no changes for a "regular" build (not using the new configure options).
On the other hand, configuring GCC as described in the documentation
update, it is possible to use the 32-bit x86 linker for/with a x86_64
build, and get the very same GCC test results as when using a x86_64
linker.  See
<http://news.gmane.org/find-root.php?message_id=%3C87k3hioknw.fsf%40kepler.schwinge.homeip.net%3E>
for the whole story.

The patches looked fine to Cary, but he says they need approval by a
global maintainer or build machinery maintainer.

The module_srcdir patch is fine (assuming you've tested it on a Canadiancross).

The "Non-host system configuration for linker plugins" patch is OK ifyou test it on a Canadian cross (unexpected bugs can pop up withCanadian crosses, so you need to test it with build != host != target,preferably with all three incompatible).

I don't feel that I understand the lto-plugin code well enough toapprove that patch.

References:
- Re: lto-plugin: mismatch between ld's architecture and GCC's configure --host
  - From: Thomas Schwinge

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