Re: expected baseline changes for forky

Le jeudi 13 août 2026, 13:00:41 heure d’été d’Europe centrale John Paul Adrian Glaubitz a écrit :
> Hi Bastien,
> 
> On Thu, 2026-08-13 at 12:53 +0200, Bastien Roucaries wrote:
> > In order to ease the user/devel experience I want for isa-support to create test for forky baseline

I forget to add my goal, the goal is to create a forky package forky-isa-support and backport it as last PU before release.

Therefore user could do apt install forky-isa-support and it will fail if upgrade is not supported.

Better user experience

> > 
> > For now I test for armhf:
> > 
> > armv8-support
> >     CPU feature checking - require ARMv8
> > 
> > neon-support
> 
> Not sure I understand this. You want to raise armhf to ARMv8? Why would
> anyone then install a 32-bit port when they could just use the 64-bit
> port in the first place?

Some packages need it, I agree with you about arm7 it is only for completeness. If you want to raise baseline ask for more test


> 
> > For armhf/arm64 (will like to know if it exist supported cpu without crc)
> > 
> > armv8crc-support
> >     CPU feature checking - require ARMv8CRC
> 
> What's the advantage of requiring ARMv8CRC?

Some package need it to me best knownelge for arm64 except one card every cpu has crc.

> 
> > For amd64/i386 (i will like to only use psABI defintion so 
> > 
> > sse3-support
> >     vérification de caractéristique de CPU – besoin de SSE3
> > sse4.1-support
> >     CPU feature checking - require SSE4.1
> > sse4.2-support
> >     SSE4.2
> > x86-64-v2-support
> >     CPU feature checking - require x86-64-v2
> > x86-64-v3-support
> >     CPU feature checking - require x86-64-v3
> 
> Isn't that something that should be done using hwcaps support?

Yes but some upstream are require sse3

> > for ppc/ppc64
> > 
> > altivec-support
> 
> POWER8 already has AltiVec.

So I could drop for ppc ?

> For powerpc and ppc64, AltiVec is not
> required in the baseline because there are some embedded systems
> that people use that don't support AltiVec despite being more recent
> than some of the first AltiVec CPUs.
> 
> Adrian

Thanks

rouca
> 
>

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