On Tue, 2021-08-31 at 11:53 +0200, Andrey Zhizhikin wrote:
> Hello Bruce,
> 
> On Mon, Aug 30, 2021 at 11:12 PM Bruce Ashfield
> <[email protected]> wrote:
> > 
> > On Mon, Aug 30, 2021 at 4:55 PM Andrey Zhizhikin <[email protected]> wrote:
> > > 
> > > Hello Richard,
> > > 
> > > On Mon, Aug 30, 2021 at 10:30 PM Richard Purdie
> > > <[email protected]> wrote:
> > > > 
> > > > On Mon, 2021-08-30 at 20:05 +0000, Andrey Zhizhikin wrote:
> > > > > Kernel commit 12dd461ebd19 ("crypto: arm64 - generate *.S by Perl at
> > > > > build time instead of shipping them") uses perl to generate assembler
> > > > > files for crypto functionality, which relies on the integer.pm module 
> > > > > to
> > > > > be provided.
> > > > > 
> > > > > Add this module to FILES and export it for build system.
> > > > > 
> > > > > Signed-off-by: Andrey Zhizhikin <[email protected]>
> > > > > Cc: Bruce Ashfield <[email protected]>
> > > > > Cc: Alexander Kanavin <[email protected]>
> > > > > ---
> > > > >  meta/recipes-devtools/perl/perl_5.34.0.bb | 1 +
> > > > >  1 file changed, 1 insertion(+)
> > > > > 
> > > > > diff --git a/meta/recipes-devtools/perl/perl_5.34.0.bb 
> > > > > b/meta/recipes-devtools/perl/perl_5.34.0.bb
> > > > > index ab19a8d0be0..7a07b3f4911 100644
> > > > > --- a/meta/recipes-devtools/perl/perl_5.34.0.bb
> > > > > +++ b/meta/recipes-devtools/perl/perl_5.34.0.bb
> > > > > @@ -248,6 +248,7 @@ FILES:${PN} = "${bindir}/perl ${bindir}/perl.real 
> > > > > ${bindir}/perl${PV} ${libdir}/
> > > > >                 ${libdir}/perl5/${PV}/strict.pm \
> > > > >                 ${libdir}/perl5/${PV}/warnings.pm \
> > > > >                 ${libdir}/perl5/${PV}/warnings \
> > > > > +               ${libdir}/perl5/${PV}/integer.pm \
> > > > >                 ${libdir}/perl5/${PV}/vars.pm \
> > > > >                 ${libdir}/perl5/site_perl \
> > > > >                 ${libdir}/perl5/${PV}/ExtUtils/MANIFEST.SKIP \
> > > > 
> > > > Doesn't that mean something is missing an RDEPENDS on 
> > > > perl-module-integer rather
> > > > than adding to the main perl package?
> > > 
> > > Good point! Now that I look at it - this does look a bit too intrusive
> > > (even though it did serve the purpose).
> > > 
> > > I'm just not sure if I can craft it to RDEPENDS in kernel class instead...
> > > 
> > > This is definitely required by newer kernel builds (>= 5.14), but I'm
> > > no expert in how those dependencies are set in kernel class. Would
> > > need to look a bit deeper there.
> > 
> > Doing it consistently is the challenge, so we tend to not set them in
> > the classes themselves.
> 
> Understood. Now I see the reason why I didn't observe any of those
> dependencies in the kernel classes themselves.
> 
> > 
> > You have to check both the architecture and the version for many of
> > the depends/rdepends.
> > 
> > Which is why I tend to carry dependencies like this in the individual
> > recipes, since the version is known and the arch is an easy check.
> 
> This is not a problem for me, as I can add it to the layer kernel
> recipe. What I believe the problem might be is that after kernel
> migration, eventually all BSP layers would have the same RDEPENDS
> defined in their respective kernel recipes. This does call for some
> unification imho, but I'm not sure how this can be properly done.
> 
> The other thing here is: the same Perl module would be required in the
> SDK in order to build Kernels >= 5.14 standalone.
> I was planning to include it into RDEPENDS of
> nativesdk-packagegroup-sdk-host, but contemplating now if this is a
> proper way of doing it. I see that the package group contains flex and
> bison for kernel builds, so adding perl integer module there seems
> quite logical to me. Unless there are good reasons not to do it this
> way.

Isn't the kernel-devsrc recipe the place this should be added? You'd need that
to be building the kernel on target?

Cheers,

Richard

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