From: Tom Lane <tgl@sss.pgh.pa.us>
To: John Naylor <johncnaylorls@gmail.com>
cc: Tobias Bussmann <t.bussmann@gmx.net>, Lukas Fittl <lukas@fittl.com>,
        Jakob Egger <jakob@eggerapps.at>,
        pgsql-hackers <pgsql-hackers@postgresql.org>,
        Andres Freund <andres@anarazel.de>
Subject: Re: Broken build on macOS (Universal / Intel): cpuid instruction not
 available
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Comments: In-reply-to John Naylor <johncnaylorls@gmail.com>
	message dated "Fri, 08 May 2026 17:04:15 +0700"
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Date: Fri, 08 May 2026 09:54:55 -0400
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John Naylor <johncnaylorls@gmail.com> writes:
> On Fri, May 8, 2026 at 3:26 PM Tobias Bussmann <t.bussmann@gmx.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