bug#79491: coreutils build failure with -mno-pclmul

On 22/09/2025 21:43, Paul Eggert wrote:
> On 2025-09-22 12:49, Pádraig Brady wrote:
>> Actually the attached is probably better.
>> It would keep the --debug accurate,
>> while addressing the build failure.
> 
> Although that looks like a win,

I'll push that to fix the build failure at least.

> I keep coming back to the question, why
> should Gnulib have pclmul enabled while coreutils does not? More
> generally, why does coreutils bother to check for whether pclmul is
> enabled? Can't it rely on Gnulib's determination?
> 
> Gnulib and coreutils check for pclmul slightly differently, but I don't
> see why there should be a difference.

I agree. I admit I didn't look too much at
gnulib's build/runtime hardware detection,
but it would be good to consolidate/ make consistent.

cheers,
Padraig