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Re: [PATCH 1/1] Stop using legacy -ffat-lto-objects flag
From: |
Eli Zaretskii |
Subject: |
Re: [PATCH 1/1] Stop using legacy -ffat-lto-objects flag |
Date: |
Mon, 09 Nov 2020 05:23:21 +0200 |
> From: Evan Klitzke <evan@eklitzke.org>
> Date: Sun, 08 Nov 2020 12:05:28 -0800
>
> Currently when Emacs is configured using the
> --enable-link-time-optimization configure flag, the build will use the
> -ffat-lto-objects flag if the host compiler is GCC (but not Clang).
> According to the comments in configure.ac this is to work around an
> issue with LTO builds in GCC 4.9.0. This flag makes builds take much
> longer (and produces much larger object files), so I suggest removing it
> as GCC 4.x is quite old at this point and doesn't have great LTO support
> anyway.
I think this is too soon: fencepost.gnu.org, which runs Trisquel LTS,
still has GCC 4.8.4.
Thanks.