From: Florian Weimer <fweimer@redhat.com>
To: Fangrui Song via Libc-alpha <libc-alpha@sourceware.org>
Cc: Adhemerval Zanella <adhemerval.zanella@linaro.org>,
Fangrui Song <maskray@google.com>
Subject: Re: [PATCH v2] elf: Replace a --defsym trick with an object file to be compatible with LLD
Date: Mon, 01 Feb 2021 14:43:14 +0100 [thread overview]
Message-ID: <874kivrjil.fsf@oldenburg.str.redhat.com> (raw)
In-Reply-To: <20210129192824.804615-1-maskray@google.com> (Fangrui Song via Libc-alpha's message of "Fri, 29 Jan 2021 11:28:24 -0800")
* Fangrui Song via Libc-alpha:
> $(objpfx)librtld.map: $(objpfx)dl-allobjs.os $(common-objpfx)libc_pic.a
> @-rm -f $@T
> - $(reloc-link) -o $@.o $(rtld-stubbed-symbols-args) \
> - '-Wl,-(' $^ -lgcc '-Wl,-)' -Wl,-Map,$@T
> - rm -f $@.o
> + printf '$(patsubst %,.globl %\n,$(rtld-stubbed-symbols)) $(patsubst %,%:\n,$(rtld-stubbed-symbols))' | \
> + $(CC) -o $@T.o $(ASFLAGS) -c -x assembler -
> + $(reloc-link) -o $@.o $@T.o '-Wl,-(' $^ -lgcc '-Wl,-)' -Wl,-Map,$@T
> + rm -f %@T.o $@.o
> mv -f $@T $@
It may be a little bit cleaner to replace the shell/make mix with just
shell, like (untested):
for symbol in $(rtld-stubbed-symbols) ; do \
echo ".globl $$symbol" ; \
echo "$$symbol:" ; \
done | $(CC) -o $@T.o $(ASFLAGS) -c -x assembler -
Thanks,
Florian
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next prev parent reply other threads:[~2021-02-01 13:43 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-28 19:48 [PATCH 0/3] Make glibc build " 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 [this message]
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
2021-01-08 17:09 ` H.J. Lu
2021-01-08 18:04 ` Fāng-ruì Sòng
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