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

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Thomas Munro <thomas(dot)munro(at)gmail(dot)com>
Cc: Heikki Linnakangas <hlinnaka(at)iki(dot)fi>, Bastien Roucariès <rouca(at)debian(dot)org>, pgsql-bugs(at)lists(dot)postgresql(dot)org
Subject: Re: Detection of hadware feature => please do not use signal
Date: 2024-11-25 00:40:29
Message-ID: 1224234.1732495229@sss.pgh.pa.us
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I wrote:
> It's very confusing, especially given this:

> $ gcc -march=armv8-a+crc+fp testarm32.c
> gcc: error: 'armv8-a' does not support feature 'fp'
> gcc: note: valid feature names are: crc simd crypto nocrypto nofp sb predres; did you mean 'nofp'?

> If they think that base armv8-a doesn't include FP, why is there a
> +nofp option?

Bug filed at

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117766

We'll see what they say, but it seems like we need a workaround
in any case.

regards, tom lane

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