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From: David Marchand <david.marchand@redhat.com>
Date: Fri, 14 Mar 2025 18:39:54 +0100
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Subject: Re: [RFC v3 6/8] build: mark exported symbols
To: Bruce Richardson <bruce.richardson@intel.com>
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On Fri, Mar 14, 2025 at 6:29=E2=80=AFPM Bruce Richardson
<bruce.richardson@intel.com> wrote:
> > > What I'd actually like more, but never have had time to actually try =
out is
> > > to generalise the instruction-set-specific build stuff into the highe=
r level
> > > drivers/meson.build code. After all, much of the code for doing so is=
 just
> > > duplicated - check for AVX512 or AVX2 and if present build these file=
s with
> > > the extra flags for that instruction set.
> > >
> > > Something similar with the base code. Most base code builds follow pr=
etty
> > > much the exact same routine.
> >
> > Having those separate libraries require special cases every time, so
> > yes, it would be great if those could be factored in some shared
> > mechanism in drivers/meson.build.
> >
> > Putting the AVX stuff aside, and back to why we need those separate
> > libraries for base drivers... I think the main use is to waive some
> > build warnings, is there something else?
> > If so.. I think some drivers could already be cleaned (like net/e1000,
> > net/ngbe, net/octeontx, net/thunderx, net/txgbe, raw/ifpga at a first
> > glance).
> >
> > The AVX stuff seems a bit more complex, as there are multiple combinati=
ons...
> >
>
> First attempt seems to go surprisingly smoothly[1]. It still builds, whic=
h is
> a start, though obviously some testing will be needed to check nothing el=
se
> is broken.

If it builds.. what more to ask for? :-)

> It really helped that most code just seemed to have been copy-pasted arou=
nd
> the place.

I had a quick look, it lgtm on the principle.

Could this be applied to lib/ ? (I see some complications with AVX512
special instructions in lib/net..).


--=20
David Marchand