[poky] Can't share build trees?

[Gary Thomas]

On 05/03/2011 07:25 AM, Richard Purdie wrote:
> On Tue, 2011-05-03 at 05:35 -0600, Gary Thomas wrote:
>> I have a system which has both PowerPC and ARM/OMAP components.
>> They share a common Poky/Yocto layer, so I thought I'd be able
>> to also share a build tree.  So, I tried something like this:
>>     % . /opt/poky/oe-init-build-env my_target
>>     % MACHINE=MY_OMAP bitbake omap-image
>>     % MACHINE=MY_PPC bitbake ppc-image
>>
>> All seemed fine the first time through.  The images were built
>> as expected and worked well.
>>
>> Sadly, when I tried to build something else, e.g.
>>     % MACHINE=MY_OMAP bitbake some-package
>> it set off rebuilding the entire cross tool chain :-(
>>
>> Should this work?  or should I just be aware it does not (and mostly
>> tell my customers not to expect it to work)?
>
> It should work and its the way I use Poky. Did you update the metadata
> between these builds changing the toolchain version for example (e.g.
> gcc 4.6.0 testing)?

No changes, just changed the MACHINE

-- 
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Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
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