[PATCH 2/N, MPX, x86_64] Intel MPX support in glibc for x86_64

[Carlos O'Donell]

On 04/25/2014 10:30 AM, Joseph S. Myers wrote:
> On Fri, 25 Apr 2014, Carlos O'Donell wrote:
> 
>> You should test for __int128, set HAVE_INT128, and make this
>> support conditional on the compiler feature being present
>> (avoid hard-coding the compiler version). I believe Ondrej
>> posted a patch for this?
> 
> bits/link.h is an installed header so can't contain conditionals on 
> configure test results like that.
> 
> However, the __int128_t built-in typedef is much older than the __int128 
> keyword (dating back to GCC 3.0, i.e. predating x86_64 support which was 
> added in 3.1), so that can be used instead.

Agreed. Thanks for catching the fact that this is an installed header.

Cheers,
Carlos.