[OE-core] [PATCH 1/7] allarch: Always inhibit default dependencies and set empty TARGET_PREFIX

[Martin Jansa]

On Mon, Nov 18, 2013 at 04:54:42PM +0100, Martin Jansa wrote:
> On Mon, Nov 18, 2013 at 12:31:15PM +0000, Richard Purdie wrote:
> > On Sun, 2013-11-17 at 14:52 +0100, Martin Jansa wrote:
> > > * typical case where we inherit allarch and override PACKAGE_ARCH
> > >   are packagegroup recipes, but those need default dependencies
> > >   inhibited even when they are MACHINE_ARCH or TUNE_PKGARCH.
> > >   I don't know about any recipe which inherits allarch and needs
> > >   default dependencies.
> > 
> > The code there was added to allow the allarch class to be enabled or
> > disabled. I don't remember exactly why we needed to do that however it
> > was added for a reason and making part of it unconditional again will
> > probably break whyever we made it optional :(.
> 
> I think that use case was MACHINE_ARCH packagegroups loosing -gnueabi
> suffix, so that everything except packagegroups (or other MACHINE_ARCH
> allarch recipes) was built in workdir:
> MACHINE-oe-linux-gnueabi
> and packagegroups in
> MACHINE-oe-linux
> 
> I don't think we had the use case where we needed to conditionally keep
> default deps (but of course my memory isn't perfect and I can be wrong).
>  
> > I can understand how you came to this conclusion though. Which cases is
> > this causing problems for?
> > 
> > > * set empty TARGET_PREFIX
> > >   This has a bit weird reason caused by unsupported setup where
> > >   external-toolchain is used in some DISTRO only for some MACHINEs
> > >   and internal is used for other MACHINEs.
> > >   Because external-toolchain usually comes with different TARGET_PREFIX
> > >   it was causing allarch recipes to have different signatures even
> > >   when they don't use toolchain at all.
> > >   Empty TARGET_PREFIX also helps to find allarch recipes which still
> > >   have default dependency on e.g. virtual/${TARGET_PREFIX}gcc.
> > 
> > This seems ok, I'd have taken it if it was a separate patch.
> 
> It's related to above, because "thanks" to empty TARGET_PREFIX I've
> found few MACHINE_ARCH+allarch recipes in meta-webos which weren't using
> toolchain, but default deps had nonexistent "virtual/gcc".

Ah sorry this wasn't very accurate, I've found it with earlier version
of this patch which was unconditionally inhibiting default deps only for
packagegroup.bbclass not allarch.bbclass where it should be.

-- 
Martin 'JaMa' Jansa     jabber: Martin.Jansa at gmail.com
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