Date: Tue, 28 Apr 2026 09:09:09 -0500
From: Nathan Bossart <nathandbossart@gmail.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: John Naylor <johncnaylorls@gmail.com>,
	Peter Eisentraut <peter@eisentraut.org>,
	Zhang Mingli <zmlpostgres@gmail.com>,
	PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Subject: Re: [BUG?] macOS (Intel) build =?utf-8?Q?w?=
 =?utf-8?Q?arnings=3A_=22ranlib=3A_file_?= =?utf-8?B?4oCm?= has no symbols"
 for aarch64 objects
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On Tue, Apr 28, 2026 at 09:29:41AM -0400, Tom Lane wrote:
> If we do care, a low-tech solution could be to have a dummy symbol
> declared in each file, along the lines of
> 
> #if HAVE_X86_64_POPCNTQ
> // code for popcntq case
> #elif HAVE_FROBNITZ
> // code for frobnitz case
> ...
> #else
> /* prevent linker complaints about empty module */
> extern int pg_cpu_x86_dummy_variable;
> int	pg_cpu_x86_dummy_variable = 0;
> #endif
> 
> Actually then we'd not need to change the build systems either...

I've been trying to avoid doing that, but it's a far simpler solution, and
in theory it should fix the problem for all platforms, too.  So, it's
probably the way to go.

-- 
nathan

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