[yocto] Selecting different kernel inside an image recipe

[Leonardo Sandoval]

On 07/08/2015 09:50 AM, Klaus Knopper wrote:
> Hello list,
>
> I'm trying to build variantions/brands of an image that only differ in
> kernel configuration and kernel modules included, but everything else stays
> the same, for the exact same board, as in the main image.
>
> Setting PREFERRED_PROVIDER_virtual/kernel = "different_kernel"
> right inside in the new image recipe does not have any effect, as that
> variable seems to be evaluated exclusively in the local.conf machine
> file, which is read by all recipes.

This variable is commonly used inside configuration metadata (machine or 
distro conf files). You may try it there.

>
> I'm confident that it is somehow possible in yocto to create an
> additional image recipe that only differs in kernel, but I'm missing the
> HOWTO for this seemingly trivial task. :-(
>
> Any hints/links?
>
> With kind regards
> -Klaus
>