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Re: [PATCH x86_64][BZ #20139] Don't allow configure with not supporting AVX512 assembler w/o --disable-avx512.
- From: Andrew Senkevich <andrew dot n dot senkevich at gmail dot com>
- To: Joseph Myers <joseph at codesourcery dot com>
- Cc: libc-alpha <libc-alpha at sourceware dot org>
- Date: Mon, 27 Jun 2016 21:36:06 +0300
- Subject: Re: [PATCH x86_64][BZ #20139] Don't allow configure with not supporting AVX512 assembler w/o --disable-avx512.
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- References: <CAMXFM3tJkhW78PPe4=FUhbm=8HoOY4iouSqXxLObA0GEMTxoZA at mail dot gmail dot com> <alpine dot DEB dot 2 dot 20 dot 1606271751470 dot 7438 at digraph dot polyomino dot org dot uk>
2016-06-27 20:53 GMT+03:00 Joseph Myers <joseph@codesourcery.com>:
> On Mon, 27 Jun 2016, Andrew Senkevich wrote:
>
>> Hi,
>>
>> this patch adds new configure option --enable-avx512 and defaults it for
>> x86_64.
>>
>> To fix BZ #20139 we need don't let to configure with not supporting
>> AVX512 assembler w/o --disable-avx512.
>
> What assembler version is required to support AVX512, and when was that
> version released? It might be better to increase the minimum binutils
> version for building glibc (generally, or for x86_64).
May be it will be the best way. Needed version is 2.25 and it was
released at Mon, 5 Jan 2015.
--
WBR,
Andrew