From: David Edelsohn <dje.gcc@gmail.com>
To: Toon Moene <toon@moene.org>
Cc: Jakub Jelinek <jakub@redhat.com>,
Thomas Koenig <tkoenig@netcologne.de>,
gcc mailing list <gcc@gcc.gnu.org>,
gfortran <fortran@gcc.gnu.org>
Subject: Re: Test with an lto-build of libgfortran.
Date: Thu, 28 Sep 2023 16:02:30 -0400 [thread overview]
Message-ID: <CAGWvny=gTOEUrTDSOr5pBvn+Vium5Hfgdxcnf5fbA70ofsKxuA@mail.gmail.com> (raw)
In-Reply-To: <682f49c9-03d1-45fb-ba4b-ebd3cc92cb1a@moene.org>
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On Thu, Sep 28, 2023 at 4:00 PM Toon Moene <toon@moene.org> wrote:
> On 9/28/23 21:26, Jakub Jelinek wrote:
>
> > It is worse than that, usually the LTO format changes e.g. any time any
> > option or parameter is added on a release branch (several times a year)
> and
> > at other times as well.
> > Though, admittedly GCC is the single package that actually could get away
> > with LTO in lib*.a libraries, at least in some packagings (if the static
> > libraries are in gcc specific subdirectories rather than say
> /usr/lib{,64}
> > or similar and if the packaging of gcc updates both the compiler and
> > corresponding static libraries in a lock-step. Because in that case LTO
> > in there will be always used only by the same snapshot from the release
> > branch and so should be compatible with the LTO in it.
> This might be an argument to make it a configure option, e.g.
> --enable-lto-runtime.
>
> Note that not all targets support LTO, so the option cannot be added
unilaterally.
David
next prev parent reply other threads:[~2023-09-28 20:02 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-27 18:21 Toon Moene
2023-09-27 21:48 ` Jeff Law
2023-09-28 6:25 ` Richard Biener
2023-09-28 6:29 ` Andrew Pinski
2023-09-28 7:29 ` Tobias Burnus
2023-09-28 9:51 ` Jakub Jelinek
2023-09-28 11:00 ` Tobias Burnus
2023-09-28 11:02 ` Jakub Jelinek
2023-09-28 5:33 ` Thomas Koenig
2023-09-28 19:03 ` Toon Moene
2023-09-28 19:26 ` Jakub Jelinek
2023-09-28 19:59 ` Toon Moene
2023-09-28 20:02 ` David Edelsohn [this message]
2023-09-29 10:26 ` Andrew Stubbs
2023-09-29 6:03 ` Thomas Koenig
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