Re: does a meta-intel (sub)layer require adding the meta-intel layer to bblayers.conf?

[Tom Zanussi <tom.zanussi@intel.com>]

On Sun, 2012-03-25 at 13:46 -0400, Robert P. J. Day wrote:
> On Sun, 25 Mar 2012, Tom Zanussi wrote:
> 
> > On Sun, 2012-03-25 at 13:23 -0400, Robert P. J. Day wrote:
> > > again, a discrepancy between the docs and the source files.  i
> > > checked out the entire meta-intel layer, and below that the file
> > > meta-crownbay/README clearly states:
> > >
> > > "Having done that, and assuming you extracted the BSP tarball contents
> > > at the top-level of your yocto build tree, you can build a crownbay
> > > image by adding the location of the meta-crownbay layer to
> > > bblayers.conf, along with the meta-intel layer itself (to access
> > > common metadata shared between BSPs) e.g.:
> > >
> > >   yocto/meta-intel \
> > >   yocto/meta-intel/meta-crownbay \"
> > >
> > >   however, the ref manual, Section 4.1, "BSP Layers", suggests only:
> > >
> > >      BBLAYERS = " \
> > >         /usr/local/src/yocto/meta \
> > >         /usr/local/src/yocto/meta-yocto \
> > >         /usr/local/src/yocto/meta-<bsp_name> \
> > >         "
> > >
> > > note no mention of including "meta-intel" layer.  clarification?
> > >
> >
> > Yes, I think that's as it should be - the general-purpose documentation
> > shouldn't mention specific layers.  meta-intel has its own layering
> > requirements as mentioned in the READMEs for those BSPs.  Also I think
> > the text mentions it's an example, but I guess I'm a bit confused since
> > I'm finding that in section 5.1. Example Filesystem Layout here:
> >
> > http://www.yoctoproject.org/docs/current/poky-ref-manual/poky-ref-manual.html
> >
> > Am I looking at the wrong thing?
> >
> > In either case, possibly a note that this is just an example and that a
> > given layer may have its own requirements?
> 
>   hang on ... i can see that meta-intel is a valid layer, under which
> you can find conf/machine/include/ia32-base.inc.  and in all of the
> *specific* intel-related BSPs, well:
> 
> $ grep -r ia32-base.inc *
> meta-cedartrail/conf/machine/cedartrail.conf:require conf/machine/include/ia32-base.inc
> meta-crownbay/conf/machine/crownbay.conf:require conf/machine/include/ia32-base.inc
> meta-crownbay/conf/machine/crownbay-noemgd.conf:require conf/machine/include/ia32-base.inc
> meta-emenlow/conf/machine/emenlow.conf:require conf/machine/include/ia32-base.inc
> meta-fishriver/conf/machine/fishriver.conf:require conf/machine/include/ia32-base.inc
> meta-fri2/conf/machine/fri2-noemgd.conf:require conf/machine/include/ia32-base.inc
> meta-fri2/conf/machine/fri2.conf:require conf/machine/include/ia32-base.inc
> meta-jasperforest/conf/machine/jasperforest.conf:require conf/machine/include/ia32-base.inc
> meta-n450/conf/machine/n450.conf:require conf/machine/include/ia32-base.inc
> meta-romley/conf/machine/romley.conf:require conf/machine/include/ia32-base.inc
> meta-sugarbay/conf/machine/sugarbay.conf:require conf/machine/include/ia32-base.inc
> meta-sys940x/conf/machine/sys940x-noemgd.conf:require conf/machine/include/ia32-base.inc
> meta-sys940x/conf/machine/sys940x.conf:require conf/machine/include/ia32-base.inc
> $
> 
>   that *would* seem to require adding meta-intel to your layers file,
> no?  or am i misunderstanding something?
> 

Yes, if you're using one of the meta-intel BSPs (and as you point out
that's mentioned as a requirement in each of those BSPs).  But the
meta-intel BSPs shouldn't be mentioned in the generic Yocto
documentation (and aren't in the snippet you mention, unless I'm looking
in the wrong place?).

Tom

> rday
>