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Raise minimum Binutils version? Was: [PATCH] powerpc: Cleanup: use actual power8 assembly mnemonics
- From: Tulio Magno Quites Machado Filho <tuliom at ascii dot art dot br>
- To: Adhemerval Zanella <adhemerval dot zanella at linaro dot org>, libc-alpha at sourceware dot org
- Cc: Raoni Fassina Firmino <raoni at linux dot ibm dot com>
- Date: Mon, 01 Jul 2019 17:07:11 -0300
- Subject: Raise minimum Binutils version? Was: [PATCH] powerpc: Cleanup: use actual power8 assembly mnemonics
- References: <20190627184417.4118-1-raoni@linux.ibm.com> <5d670a77-fbb1-56b8-396a-89cdf56d87a3@linaro.org>
Adhemerval Zanella <adhemerval.zanella@linaro.org> writes:
> On 27/06/2019 15:44, Raoni Fassina Firmino wrote:
>>
>> Also with binutils 2.25 glibc already does not build for power because
>> the use of "xssqrtqp" which is a power9 instruction (assuming
>> --enable-multi-arch, which is the default). So 2.26 is already the "the
>> facto" minimum binutils on power.
>
> In this case I think it better to add an assembler check similar to the
> compiler one on sysdeps/powerpc/powerpc64/le/configure.ac for the required
> instructions.
I have no problem with that, but looking at the logs, GNU Binutils >= 2.25
started to be required in June 2017, immediately before glibc release 2.26.
That is commit 073e8fa7739e.
Should glibc start to require a newer Binutils?
For the record:
GNU Binutils 2.25 was tagged in Dec. 2014
GNU Binutils 2.26 was tagged in Jan. 2016
It could also remove a test from sysdeps/arm/configure.ac.
--
Tulio Magno