| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | John Naylor <johncnaylorls(at)gmail(dot)com> |
| Cc: | Tobias Bussmann <t(dot)bussmann(at)gmx(dot)net>, Lukas Fittl <lukas(at)fittl(dot)com>, Jakob Egger <jakob(at)eggerapps(dot)at>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>, Andres Freund <andres(at)anarazel(dot)de> |
| Subject: | Re: Broken build on macOS (Universal / Intel): cpuid instruction not available |
| Date: | 2026-05-08 13:54:55 |
| Message-ID: | 961464.1778248495@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
John Naylor <johncnaylorls(at)gmail(dot)com> writes:
> On Fri, May 8, 2026 at 3:26 PM Tobias Bussmann <t(dot)bussmann(at)gmx(dot)net> wrote:
>> analysed how useful these universal builds are given the lack of
>> optimisations for one of the architectures, but at least they are possible
>> again, as they were previously.
> Taking a quick look at the configure output you provided, certain
> optimizations will be lacking on both architectures:
Yeah. I think the main practical problem will be the
lowest-common-denominator CRC code. However, AFAICS a universal build
would have been selecting that from day one, so if the performance has
been acceptable so far it won't be any worse in v19.
regards, tom lane
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