From: Tom Lane <tgl@sss.pgh.pa.us>
To: pgsql-committers@lists.postgresql.org
Subject: pgsql: Fix pg_crc32c_armv8_choose.c to build with ancient glibc release
Date: Mon, 17 Nov 2025 20:24:48 +0000
Message-ID: <E1vL5mK-0002qa-1D@gemulon.postgresql.org> (raw)
Fix pg_crc32c_armv8_choose.c to build with ancient glibc releases.
If you go back as far as the RHEL7 era, <sys/auxv.h> does not provide
the HWCAPxxx macros needed with elf_aux_info or getauxval, so you need
to get those from the kernel header <asm/hwcap.h> instead. We knew
that for the 32-bit case but failed to extrapolate to the 64-bit case.
Oversight in commit aac831caf.
Reported-by: GaoZengqi <pgf00a@gmail.com>
Author: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/CAFmBtr3Av62-jBzdhFkDHXJF9vQmNtSnH2upwODjnRcsgdTytw@mail.gmail.com
Backpatch-through: 18
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/6d969ca687b4b2d4387d318c3fbcf3fc606ea55b
Modified Files
--------------
src/port/pg_crc32c_armv8_choose.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
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To: pgsql-committers@postgresql.org
Cc: tgl@sss.pgh.pa.us, pgsql-committers@lists.postgresql.org
Subject: Re: pgsql: Fix pg_crc32c_armv8_choose.c to build with ancient glibc release
In-Reply-To: <E1vL5mK-0002qa-1D@gemulon.postgresql.org>
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