Re: Detection of hadware feature => please do not use signal

Le vendredi 1 novembre 2024, 06:16:32 UTC Tom Lane a écrit :
> I wrote:
> > Hmm. So it seems like we could do this:
> > * Linux, FreeBSD, OpenBSD: do run-time test as recommended
> > * Windows, macOS: assume that supported ARM hardware can do this
> > * anything else: assume no hardware CRC
>
> Actually, after chewing on that second point awhile longer,
> how about this modest proposal:
>
> * Drop all code for run-time determination of ARM CRC support.
> Assume it's there unless user builds with a -march option that
> says it definitely isn't.
>
> Realistically, exactly who is going to be running Postgres 18+
> on ARM hardware that lacks CRC support? I can think of lots of
> projects that are more worthy of our time than this.
>
> (Perhaps it's time to apply the same mindset to x86 CRC support
> too?)

arm64 baseline for debian is without CRC so I will prefer to keep crc32

Bastien
>
> regards, tom lane
>