Re: [PATCH v4] config: Allow kernel installation packaging to override pkg-config

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Tue, Mar 08, 2022 at 01:01:45PM +0900, Masahiro Yamada wrote:
> On Tue, Mar 8, 2022 at 7:50 AM Chun-Tse Shao <ctshao@xxxxxxxxxx> wrote:
> >
> > On Mon, Mar 07, 2022 at 10:17:17AM -0800, Nick Desaulniers wrote:
> > > On Sun, Mar 6, 2022 at 2:39 PM Chun-Tse Shao <ctshao@xxxxxxxxxx> wrote:
> > > >
> > > > Add HOSTPKG_CONFIG to allow tooling that builds the kernel to override
> > > > what pkg-config and parameters are used.
> > >
> > > Sorry, kind a late thought here for v4, but we don't seem to prefix
> > > many other host side tools with HOST_, i.e. LEX, YACC, AWK, PERL,
> > > PYTHON3, etc.  Maybe just having the variable identifier be simply
> > > PKGCONFIG rather than HOSTPKG_CONFIG then put it at the end of the
> > > list in the top level Makefile after ZSTD (i.e. the list of host
> > > tools)?  There's HOST_ prefixes when there's more than one tool
> > > involved (i.e. host compiler vs target compiler), but I suspect
> > > there's no such distinction for the existing uses of pkg-config?
> > >
> > Thanks for your suggestion, Nick! Yes I think it makes sense with PKGCONFIG
> > instead of HOSTPKG_CONFIG since there is only one tool involved. I will
> > work on it and submit a new patch.
> >
>
> Please hold on.
>
> I was also wondering what to do with the "HOST" prefix.
>
> Libraries are usually arch-dependent.
> (in other words, pkg-config should return different library paths
> for $(CC) and $(HOSTCC) )
>
> You already understood this, so you added "HOST" prefix.
>
>
> Please let me take time for further discussion.
> I will come back to this when I get some time.
>
>

Hi Mashiro,

I was wondering if you were able to look more into this.

Thank you!

-CT

> In the meantime,
>   a8a5cd8b472ca20e5b8fa649c43b3756867322f8
> as reference info if you have not seen it.
>
>
> How many distros support something like
> "aarch64-linux-gnu-pkg-config"  ?
>
> Ubuntu 18.04 and 20.04 seem to support it.
> I do not know for others.
>
>
>
>
>
> --
> Best Regards
>
> Masahiro Yamada



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