[oe] A new bitbake extension: .bbappend files

[Chris Larson]

On Tue, Jul 20, 2010 at 8:52 AM, Michael Smith <msmith at cbnco.com> wrote:

> Tom Rini wrote:
>
>> It's also needed, in some cases, to lock down your changes via OVERRIDES
>> that will only match what you want to work on.  For example, we're using a
>> snapshot with an older python, so amend.inc in our python directory looks
>> like:
>>
>> SRC_URI_append_pn-python-native =
>> "file://python-2.6-r73342.patch;patch=1;pnum=0"
>> PARALLEL_MAKE_pn-python-native = ""
>> PR_append_pn-python-native .= ".1"
>>
>> So that we only change python-native and not all of the other python
>> recipes.
>>
>
> I think you could get the same effect by putting your amend.inc in a
> python-native subdirectory under your overlay recipes/python directory.
>
> Maybe there's some native magic going on that would break that. (I've never
> amended a -native package but I use the same trick for other recipes where
> there are multiple .bb files are in the same OE directory.)


Well, that works for -native or -cross, but there's no -target, so you have
to use a pn- override to modify the target recipe but *not* native and
cross.  If you put it in python/, it applies to all of them.
-- 
Christopher Larson
clarson at kergoth dot com
Founder - BitBake, OpenEmbedded, OpenZaurus
Maintainer - Tslib
Senior Software Engineer, Mentor Graphics