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

Thomas Munro <thomas.munro@gmail.com>

From: Thomas Munro <thomas.munro@gmail.com>

To: Tom Lane <tgl@sss.pgh.pa.us>

Cc: Heikki Linnakangas <hlinnaka@iki.fi>, Bastien Roucariès <rouca@debian.org>, pgsql-bugs@lists.postgresql.org

Date: 2024-11-23T23:50:09Z

Lists: pgsql-bugs

On Sun, Nov 24, 2024 at 11:02 AM Tom Lane <tgl@sss.pgh.pa.us> wrote:
> cc1: error: '-mfloat-abi=hard': selected processor lacks an FPU

Interesting.  Happens also on Linux starting with GCC 11, apparently.
Here's one with some clues:

https://github.com/checkpoint-restore/criu/issues/1653#issuecomment-986034428

We have a few Linux armv7 animals in the farm, but using GCC 10 and
older so not seeing it yet.

Commits

Update configure probes for CFLAGS needed for ARM CRC instructions.
- e266a0ed67d2 17.3 landed
- 851c6ff18fd3 15.11 landed
- 5980f1884fc9 18.0 landed
- 32057a0f791e 13.19 landed
- 2fc0199a5015 14.16 landed
- 1f4aadec41b8 16.7 landed
Support runtime CRC feature probing on NetBSD/ARM using sysctl().
- 4570b22666dd 18.0 landed
Use auxv to check for CRC32 instructions on ARM.
- aac831cafa6f 18.0 landed
Improve our method for probing the availability of ARM CRC instructions.
- 1c72ec6f4989 11.0 cited