From: Fangrui Song <i@maskray.me>
To: Luca Boccassi <luca.boccassi@gmail.com>
Cc: Florian Weimer <fweimer@redhat.com>, binutils@sourceware.org
Subject: Re: [PATCH] ld: add --package-metadata
Date: Tue, 24 May 2022 23:56:58 -0700 [thread overview]
Message-ID: <20220525065658.mxvpugjgnh3dt7de@gmail.com> (raw)
In-Reply-To: <CAMw=ZnS=CXHXxnd2_dQ8uJ=u4gpT36QjyvxhC7s-aquoUHaEQw@mail.gmail.com>
On 2022-05-17, Luca Boccassi via Binutils wrote:
>On Tue, 17 May 2022 at 07:03, Florian Weimer <fweimer@redhat.com> wrote:
>>
>> * Fangrui Song:
>>
>> > Both the "FDO" and the json dependency make me concerned -
>> > if a linker script approach works quite well, why bother with a new
>> > linker option with a very specific application?
>>
>> The linker script does not work all that well because it requires that
>> the script is materialized to disk somewhere, and that path needs to
>> show up in the build flags. If the build flags are stored beyond the
>> build for future use, this makes them invalid because the path will
>> typically be gone by the time the stored flags are used.
>>
>> Thanks,
>> Florian
Do you mean that a user may need to re-link the executable/shared
object? The note content must be preserved somewhere, I don't see how
as ... -o meta.o
ld.bfd ... meta.o
is more inconvenient than
ld.bfd --package-meta='content' ...
The "FDO" owner also makes me concerned. It seems a bit arbitrary.
https://src.fedoraproject.org/rpms/package-notes/pull-request/2#comment-98855 (tstellar)
says
"Given, that I'm the maintainer of lld in Fedora, if I volunteer to deal
with issues that stem from this assembler based implementation would you
be more likely to accept this patch?"
It would be nice to have a list of packages and fix them (perhaps issues like not honor LDFLAGS).
I left a comment on
https://github.com/rui314/mold/issues/505#issuecomment-1136277017 as
well.
>Indeed, it was working fine as an initial step to get the ball rolling and
>the spec adopted, but having to generate and reference an
>intermediate, temporary asset is not great and has drawbacks. Now
>that the spec is live and proven in production in Fedora 36 it seemed
>to me like a good time to introduce a first-class option, to make further
>usage and adoption as trivial as it can be.
>
>Kind regards,
>Luca Boccassi
next prev parent reply other threads:[~2022-05-25 6:57 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-15 19:18 luca.boccassi
2022-05-16 16:40 ` Fangrui Song
2022-05-17 6:03 ` Florian Weimer
2022-05-17 14:44 ` Luca Boccassi
2022-05-25 6:56 ` Fangrui Song [this message]
2022-05-25 7:53 ` Florian Weimer
2022-05-23 11:26 ` Luca Boccassi
2022-05-24 9:34 ` Jose E. Marchesi
2022-05-24 11:26 ` Luca Boccassi
2022-05-24 16:23 ` Nick Clifton
2022-05-24 18:38 ` Luca Boccassi
2022-05-25 8:45 ` Florian Weimer
2022-05-25 13:53 ` Luca Boccassi
2022-05-30 14:08 ` Florian Weimer
2022-05-24 16:28 ` Nick Clifton
2022-05-24 21:15 ` [PATCH v2] " luca.boccassi
2022-05-25 4:30 ` Alan Modra
2022-05-25 6:02 ` Alan Modra
2022-05-25 13:42 ` Luca Boccassi
2022-05-25 13:41 ` [PATCH v3] " luca.boccassi
2022-05-26 3:55 ` Alan Modra
2022-05-26 10:46 ` Luca Boccassi
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