[PATCH x86_64][BZ #20139] Don't allow configure with not supporting AVX512 assembler w/o --disable-avx512.

[H.J. Lu]

On Mon, Jun 27, 2016 at 11:16 AM, Mike Frysinger <vapier@gentoo.org> wrote:
> On 27 Jun 2016 20:40, Andrew Senkevich wrote:
>> +'--disable-avx512'
>> +     By default for x86_64, the GNU C Library is built with
>> +     '--enable-avx512'.  Configure with '--disable-avx512' if assembler
>> +     doesn't support AVX512.
>
> people shouldn't have to pass configure flags like this to get a
> successful build.  we have all the info in order to figure out a
> sane default.  specifying enable/disable flags is purely to not
> use the default autodetection.
> -mike

We want to make sure that x86-64 glibc supports AVX512.  Any
suggestions are welcome.


-- 
H.J.