[yocto] How to use *.bb file to select different kernel config/feature?

[Richard Zhang]

So, maybe I should take a KERNEL_CONFIG into my own kernel recipe.


Thanks


Richard

________________________________
From: Bruce Ashfield <bruce.ashfield at gmail.com>
Sent: Tuesday, March 21, 2017 8:33:09 PM
To: Richard Zhang
Cc: yocto at yoctoproject.org
Subject: Re: [yocto] How to use *.bb file to select different kernel config/feature?



On Tue, Mar 21, 2017 at 3:15 AM, Richard Zhang <richard.zhang at pica8.com<mailto:richard.zhang at pica8.com>> wrote:

Hi all


I want   to use one linux-kernel-myown.bb<http://linux-kernel-myown.bb> file to select different config for several boxes.

I think when I give MACHINE to box1\box2\box3, the kernel config and features select can be done.


Is it correct :


when use MACHINE=box1\box2\box3 and so on:


KERNEL_FEATURES_append_box1=" cfg/box1.scc"

These are variables like any other in bitbake. They can take a variety of overrides, one of which is the machine
name. So yes, you could append a kernel feature only for your $MACHINE with the line above.

But you must be using a kernel recipe that inherits kernel-yocto for the feature to be processed.

KERNEL_CONFIG_box1=" cfg/box1_defconfig.cfg"

Assuming KERNEL_CONFIG is a valid variable in your layers, this would also work. But if you are using
configuration fragments and kernel-yocto, that isn't a variable that is used.

Bruce




this instruction could work?or any suggestion.



Regards

Richard

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