From: Brad Smith <brad@comstyle.com>
Subject: Re: Missing ARM SVE header
To: tech@openbsd.org, kettenis@openbsd.org
Date: Sun, 30 Mar 2025 02:09:48 -0400

On 2025-03-29 8:25 a.m., Jeremie Courreges-Anglas wrote:
> On Fri, Mar 28, 2025 at 07:24:07PM -0400, Brad Smith wrote:
>> ping.
>>
>> On 2025-03-09 5:59 p.m., Brad Smith wrote:
>>> I have not run this through a build yet but I believe this is what is necessary.
>>>
>>> I was wondering why a projects compiler checks were failing for SVE but the
>>> commit message gave me a clue and sure enough our local build bits were
>>> missing installing the header once we jumped past the 14 release. Copying
>>> the header from the port resolved the issue.
> Using codesearch.debian.net I found the following users:
>
> multimedia/aom
> multimedia/libvpx
> multimedia/svt-av1
> multimedia/x265
>
> and a bunch of embedded copies of these, mainly in chromium and
> firefox.  libvpx and x265 build, aom shows some warnings at build
> time, and svt-av1 fails to build:
>
> https://wxcvbn.org/~jca/tmp/aom.log
> https://wxcvbn.org/~jca/tmp/svt-av1.log
>
> Tested on an m2 with the missing header installed.

I just ran into the issue with SVT-AV1updating it to to 3.0.x thinking 
it was an issue with the newer releases but as you pointed out its 
already an issue with 2.3.0. I am going to disable the SVE support for 
now. I had also ran into this issue and tested the SVE support in my 
VVenC port. As well as x265, aom and libvpx.