[OE-core] slightly confused about .bbappend file and FILESPATH

[Robert P. J. Day]

On Wed, 12 Dec 2012, Martin Jansa wrote:

> On Tue, Dec 11, 2012 at 02:39:16PM -0500, Robert P. J. Day wrote:
> > On Tue, 11 Dec 2012, Martin Jansa wrote:
> >
> > > On Thu, Dec 06, 2012 at 01:19:57PM -0500, Robert P. J. Day wrote:
> > > > On Thu, 6 Dec 2012, Mark Hatle wrote:
> > > >
> > > > > On 12/6/12 12:03 PM, Robert P. J. Day wrote:
> > > > > >
> > > > > >    currently writing a tutorial page on how .bbappend files and
> > > > > > FILESPATH work, and i wanted to use a live example, but now i'm
> > > > > > confused.
> > > > >
> > > > > The way it works is the same way as PATH in the shell.  It's just a set of
> > > > > search paths.
> > > > >
> > > > > >    using meta-ti layer, i chose to build core-image-minimal for a
> > > > > > beagleboard, for which the meta-ti layer has the following under
> > > > > > recipes-core/netbase/ that i want to use as an example:
> > > > > >
> > > > > > $ find
> > > > > > .
> > > > > > ./netbase_5.0.bbappend
> > > > > > ./netbase-5.0
> > > > > > ./netbase-5.0/beagleboard
> > > > > > ./netbase-5.0/beagleboard/interfaces
> > > > > > $
> > > > > >
> > > > > > where the .bbappend file contains only:
> > > > > >
> > > > > > THISDIR := "${@os.path.dirname(bb.data.getVar('FILE', d, True))}"
> > > > >
> > > > > I believe this is the default value of 'THISDIR' already, so there is no
> > > > > reason to specify it in the .bbappend itself.
> > > > >
> > > > > > FILESPATH =. "${@base_set_filespath(["${THISDIR}/${PN}"], d)}:"
> > > > >
> > > > > In this example, it's incorrect.  As you have a directory named
> > > > > "netbase-5.0", so your FILESPATH should be: ${THISDIR}/${PN}-${PV}
> > > >
> > > >   ok, so that's just a bug in the setting of FILESPATH in that one
> > > > example?  whew.  i was seriously wondering how badly i misunderstood
> > > > how this feature worked.
> > > >
> > > >   as soon as my beagle core-image-minimal finishes building, i should
> > > > be able to trivially check that the interfaces file used to populate
> > > > the rootfs image is the one from oe-core and not the one that should
> > > > have come from meta-ti.
> > >
> > > See FILESEXTRAPATHS in other bbappends and
> > >
> > > meta/classes/base.bbclass:FILESPATH = "${@base_set_filespath(["${FILE_DIRNAME}/${BP}","${FILE_DIRNAME}/${BPN}", "${FILE_DIRNAME}/files"], d)}"
> > >
> > > + definition of fce base_set_filespath:
> > > meta/classes/utils.bbclass:def base_set_filespath(path, d):
> >
> >   i'm still not sure what your point is here.
>
> That all you need is 1 line:
> FILESEXTRAPATHS_prepend := "${THISDIR}/${BP}:"

  right, i believe that was the point i was circling around all this
time. :-)

rday

-- 

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Robert P. J. Day                                 Ottawa, Ontario, CANADA
                        http://crashcourse.ca

Twitter:                                       http://twitter.com/rpjday
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