public inbox for libc-alpha@sourceware.org
 help / color / mirror / Atom feed
From: "Fāng-ruì Sòng" <maskray@google.com>
To: GNU C Library <libc-alpha@sourceware.org>
Subject: Re: [PATCH 0/3] Make glibc build with LLD
Date: Thu, 7 Jan 2021 21:04:37 -0800	[thread overview]
Message-ID: <CAFP8O3LeMpKpEPow52pEvBkU4R=sH5QG8sAu_qSYixES-rdTng@mail.gmail.com> (raw)
In-Reply-To: <20201228194855.510315-1-maskray@google.com>

On Mon, Dec 28, 2020 at 11:48 AM Fangrui Song <maskray@google.com> wrote:
>
> I sent the first two in April. Resending in a patch series to be
> clearer.
>
>   install: Replace scripts/output-format.sed with objdump -f
>
> replaced https://sourceware.org/pipermail/libc-alpha/2020-April/112733.html
> by leveraging objdump -f.
>
> With this patch series (available in https://sourceware.org/git/?p=glibc.git;a=shortlog;h=refs/heads/maskray/lld),
> `make` with ld pointing to ld.lld (LLVM linker) works.
>
> Fangrui Song (3):
>   configure: Allow LD to be a linker other than GNU ld and gold
>   elf: Replace a --defsym trick with an object file to be compatible
>     with lld
>   install: Replace scripts/output-format.sed with objdump -f
>
>  Makerules                                     | 13 ++-----
>  .../strcoll-inputs/filelist#en_US.UTF-8       |  1 -
>  config.make.in                                |  1 -
>  configure                                     | 32 +++++------------
>  configure.ac                                  | 24 +++++--------
>  elf/Makefile                                  | 11 +++---
>  scripts/output-format.sed                     | 35 -------------------
>  7 files changed, 23 insertions(+), 94 deletions(-)
>  delete mode 100644 scripts/output-format.sed
>
> --
> 2.29.2.729.g45daf8777d-goog
>

Hope "elf:" and "install:" can be reviewed (they are nice
simplification on their own), even if you don't want to take
"configure:" for now.

For __rela_iplt_start, I gave a fair assessment on
https://bugs.llvm.org/show_bug.cgi?id=48674#c4 . I feel bad that an
improvable binutils issue caused the block of a static-pie relocation
improvement
"Make _dl_relocate_static_pie return an int indicating whether it
applied relocs." The other few failures (e.g. not supporting ld.lld
--audit / tls common) are not really usability affecting issues.

  parent reply	other threads:[~2021-01-08  5:04 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-28 19:48 Fangrui Song
2020-12-28 19:48 ` [PATCH 1/3] configure: Allow LD to be a linker other than GNU ld and gold Fangrui Song
2020-12-28 20:46   ` H.J. Lu
2020-12-28 21:15     ` [PATCH 1/3] configure: Allow LD to be LLD 9.0.0 or above " Fangrui Song
2020-12-28 19:48 ` [PATCH 2/3] elf: Replace a --defsym trick with an object file to be compatible with lld Fangrui Song
2021-01-11 20:06   ` Fāng-ruì Sòng
2021-01-18 22:08     ` Fāng-ruì Sòng
2021-01-19  0:03   ` H.J. Lu
2021-01-19  8:50     ` Fāng-ruì Sòng
2021-01-19 12:30       ` H.J. Lu
2021-01-20 18:51         ` Fāng-ruì Sòng
2021-01-28  1:03           ` Fāng-ruì Sòng
2021-01-29 14:38             ` Adhemerval Zanella
2021-01-29 15:29               ` H.J. Lu
2021-01-29 18:04                 ` Adhemerval Zanella
2021-01-29 19:28                   ` [PATCH v2] elf: Replace a --defsym trick with an object file to be compatible with LLD Fangrui Song
2021-02-01 13:19                     ` Adhemerval Zanella
2021-02-01 13:45                       ` H.J. Lu
2021-02-01 13:43                     ` Florian Weimer
2020-12-28 19:48 ` [PATCH 3/3] install: Replace scripts/output-format.sed with objdump -f [BZ #26559] Fangrui Song
2021-01-08 19:38   ` Adhemerval Zanella
2021-01-12 11:20     ` Florian Weimer
2021-01-12 12:00       ` Adhemerval Zanella
2021-01-12 17:46         ` Fāng-ruì Sòng
2021-01-12 11:32   ` Andreas Schwab
2021-01-12 11:58     ` Florian Weimer
2020-12-28 21:11 ` [PATCH 0/3] Make glibc build with LLD H.J. Lu
2020-12-28 21:45   ` Fangrui Song
2020-12-28 21:49     ` H.J. Lu
2020-12-28 22:54       ` H.J. Lu
2021-01-05 23:03         ` Fāng-ruì Sòng
2021-01-05 23:33           ` H.J. Lu
2021-01-05 23:41             ` Fāng-ruì Sòng
2021-01-05 23:51               ` H.J. Lu
2021-01-06  0:50                 ` Fāng-ruì Sòng
2021-01-06  1:43                   ` H.J. Lu
2021-01-06  2:00                     ` Fāng-ruì Sòng
2021-01-06  2:14                       ` H.J. Lu
2021-01-05 22:57       ` Fāng-ruì Sòng
2021-01-08  5:04 ` Fāng-ruì Sòng [this message]
2021-01-08 17:09   ` H.J. Lu
2021-01-08 18:04     ` Fāng-ruì Sòng

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to='CAFP8O3LeMpKpEPow52pEvBkU4R=sH5QG8sAu_qSYixES-rdTng@mail.gmail.com' \
    --to=maskray@google.com \
    --cc=libc-alpha@sourceware.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).