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Subject: [Bug target/97865] libtool needs to be updated for Darwin20.
Date: Tue, 17 Nov 2020 22:09:17 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D97865

--- Comment #13 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to joseph@codesourcery.com from comment #12)
> config.sub and config.guess are imported, unmodified, from upstream=20
> config.git.

thanks I will try to do that and test it over the next days (I've been usin=
g a
newish version on arm64-darwin20 for a few months so don't anticipate probl=
ems
- but who knows).

> libtool has lots of local changes, hopefully all of them submitted=20
> upstream but maybe not and maybe some not committed upstream (libtool has=
=20
> very few commits in recent years, but lots since the 2009 version used in=
=20
> GCC).  As well as checking all the local changes (relative to libtool=20
> commit 2c9c38d8a12eb0a2ce7fe9c3862523026c3d5622, apparently) and applying=
=20
> them to a new version as needed, updating libtool would also require=20
> reverting libtool commit 3334f7ed5851ef1e96b052f2984c4acdbf39e20c to deal=
=20
> with a mismatch of --with-sysroot interpretations.

The patch I have here is a additional local change (and specific to Darwin),
unfortunately, I don't have resources to address the scope of work you
describe.=