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

[Detlef Vollmann]

On 07/18/10 22:25, Richard Purdie wrote:
> 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...
Thanks, that actually works. Great :-)

Thanks again,
   Detlef