From: Fangrui Song <maskray@google.com>
To: "H.J. Lu" <hjl.tools@gmail.com>
Cc: GNU C Library <libc-alpha@sourceware.org>
Subject: Re: [PATCH 0/3] Make glibc build with LLD
Date: Mon, 28 Dec 2020 13:45:41 -0800 [thread overview]
Message-ID: <20201228214541.phbfjgv2ft3mgikj@google.com> (raw)
In-Reply-To: <CAMe9rOo36MT95J5YBoOvaoa+2BS6--V9P4OHR9gU24rvm-0Edw@mail.gmail.com>
On 2020-12-28, H.J. Lu wrote:
>On Mon, Dec 28, 2020 at 11:49 AM Fangrui Song via Libc-alpha
><libc-alpha@sourceware.org> 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.
>
>I tried your branch with "LLD 11.0.0 (compatible with GNU linkers)" on
>Fedora 33/x86-64,
>"make check" generated:
>
>make[4]: *** [../Makerules:767:
>/export/users/hjl/build/gnu/tools-build/glibc-gitlab-lld/build-x86_64-linux/elf/tst-tlsmod2.so]
>Error 1
>make[4]: *** [../Makerules:767:
>/export/users/hjl/build/gnu/tools-build/glibc-gitlab-lld/build-x86_64-linux/elf/tst-tlsmod4.so]
>Error 1
>make[4]: *** [../Makerules:767:
>/export/users/hjl/build/gnu/tools-build/glibc-gitlab-lld/build-x86_64-linux/elf/tst-absolute-sym-lib.so]
>Error 1
>make[4]: *** [../Makerules:767:
>/export/users/hjl/build/gnu/tools-build/glibc-gitlab-lld/build-x86_64-linux/elf/tst-absolute-zero-lib.so]
>Error 1
>make[4]: *** [../Makerules:767:
>/export/users/hjl/build/gnu/tools-build/glibc-gitlab-lld/build-x86_64-linux/elf/tst-tlsmod6.so]
>Error 1
>make[4]: *** [../Makerules:767:
>/export/users/hjl/build/gnu/tools-build/glibc-gitlab-lld/build-x86_64-linux/elf/tst-tlsmod5.so]
>Error 1
>make[4]: *** [../Rules:226:
>/export/users/hjl/build/gnu/tools-build/glibc-gitlab-lld/build-x86_64-linux/elf/tst-audit16]
>Error 1
>make[4]: *** [../Rules:226:
>/export/users/hjl/build/gnu/tools-build/glibc-gitlab-lld/build-x86_64-linux/elf/tst-audit14]
>Error 1
>make[4]: *** [../Rules:226:
>/export/users/hjl/build/gnu/tools-build/glibc-gitlab-lld/build-x86_64-linux/elf/tst-audit15]
>Error 1
>make[4]: *** [../Rules:226:
>/export/users/hjl/build/gnu/tools-build/glibc-gitlab-lld/build-x86_64-linux/elf/tst-tls1]
>Error 1
>make[4]: *** [../Rules:226:
>/export/users/hjl/build/gnu/tools-build/glibc-gitlab-lld/build-x86_64-linux/elf/ifuncmain5]
>Error 1
>make[4]: *** [../Rules:226:
>/export/users/hjl/build/gnu/tools-build/glibc-gitlab-lld/build-x86_64-linux/elf/ifuncmain1]
>Error 1
>make[3]: *** [Makefile:479: elf/tests] Error 2
>
>with error messages, like
>
>ld: error: /export/users/hjl/build/gnu/tools-build/glibc-gitlab-lld/build-x86_64-linux/elf/tst-tlsmod2.os
>has an STT_TLS symbol but doesn't have an SHF_TLS section
>ld: error: /export/users/hjl/build/gnu/tools-build/glibc-gitlab-lld/build-x86_64-linux/elf/tst-tlsmod4.os
>has an STT_TLS symbol but doesn't have an SHF_TLS section
tst-tls* tests appear to be similar to .tls_common which looks very
obsoleted and not supported by Clang. I don't think ifuncmain* or
tst-audit* matters for typical usage (most users) but I can take a look.
>When glibc is configured with --enable-static-pie, I got
>
>[hjl@gnu-skx-1 build-x86_64-linux]$ ./elf/ldconfig
>Segmentation fault (core dumped)
>[hjl@gnu-skx-1 build-x86_64-linux]$
>
>You need to fix lld first and give the working lld a proper version so that
>configure can check it.
I cherry picked "Make _dl_relocate_static_pie return an int indicating whether it applied relocs."
in google/grte/v5-2.27/master, which has fixed the issue.
next prev parent reply other threads:[~2020-12-28 21:45 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 [this message]
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
2021-01-08 17:09 ` H.J. Lu
2021-01-08 18:04 ` Fāng-ruì Sòng
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