[oe] [Bitbake-dev] A new bitbake extension: .bbappend files

[Richard Purdie]

On Sun, 2010-07-18 at 21:24 +0200, Detlef Vollmann wrote:
> On 07/18/10 18:06, Chris Larson wrote:
> > On Sun, Jul 18, 2010 at 9:01 AM, Detlef Vollmann <dv at vollmann.ch> wrote:
> > 
> >> On 07/18/10 17:13, Chris Larson wrote:
> >>
> >>> On Sun, Jul 18, 2010 at 3:06 AM, Detlef Vollmann <dv at vollmann.ch> wrote:
> >>>
> >>>  On 07/16/10 16:25, Richard Purdie wrote:
> >>>>  For the specific case of paths, I have wondered if there would be a way
> >>>>> to leverage help from bitbake in creating a sane set of search paths but
> >>>>> I'm still thinking about that. This extension is good enough in its own
> >>>>> right in my opinion to be worthwhile.
> >>>>>
> >>>>>  This might be true, but solving the general path problem would be
> >>>> much more useful.
> >>>> If you want to add a new version of e.g. gcc in your ovlerlay,
> >>>> you have to pull over the whole gcc directory with all its .inc classes.
> >>>> This can't be solved by .bbapend, or am I missing something?
> >>>>
> >>>
> >>> You can handle that today by adding to FILESPATHBASE.  All file:// files
> >>> from SRC_URI are located using FILESPATH, which is constructed from
> >>> FILESPATHBASE, FILESPATHPKG, and OVERRIDES.
> >>>
> >> AFAIK this doen't work for include/require :-(
> > 
> > 
> > Don't copy the recipe at all, use .bbappend instead, and you won't need to
> > have the .inc in a different collection from the recipe itself.
> In that case I didn't understand .bbappend.
> If I have a recipe gcc_4.3.2.bb in e.g. oe-stable/recipes/gcc, but in
> that directory is no gcc_4.4.4.bb,  and I put gcc_4.4.4.bbappend into
> myproject/recipes/gcc, that would probably given an error like
> 'no .bb file to append'.
> At least that's how I understood .bbappend.
> 
> > Alternatively, you can adjust BBPATH to also include the other collection
> > based paths + os.path.dirname('${FILE_DIRNAME}') or so.
> I'd be very interested to find a way so that a 'require gcc.inc' in
> myproject/recipes/gcc_4.4.4.bb would find oe-stable/recipes/gcc/gcc.inc.
> So far I failed.

Does something like "require recipes/gcc/gcc.inc" not just work already
as it will search BBPATH...

Cheers,

Richard