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From: Gary Thomas <gary@mlbassoc.com>
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Subject: Re: Linux kernel recipe override question
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On 2014-02-24 12:51, John Weber wrote:
> Here is a question someone might be able to quickly answer.
> 
> I want to be able to override the SRCREV, SRCBRANCH, and the git repository for
> the kernel recipe in local.conf.  I like to do this so that I can do local
> hacking on a kernel without having to edit the recipe files themselves, and I
> find that managing local.conf is easier when I'm changing SRCREVs a lot.
> 
> I've been able to override SRCBRANCH by doing this:
> 
> In recipes-kernel/linux/linux-wandboard.inc:
> 
> SRCBRANCH ??= "master"
> 
> The default is set in recipes-kernel/linux/linux-wandboard_3.10.17.bb:
> 
> SRCBRANCH ?= "<the-default-branch>"
> 
> Then, in local.conf, I can override it:
> 
> SRCBRANCH_linux-wandboard = "<my-local-hacking-branch>"
> 
> This works fine for SRCBRANCH. If I do the same thing with SRCREV, it doesn't
> seem to work.  I've done this:
> 
> In linux-wandboard_3.10.17.bb:
> 
> SRCREV ??= "<default big long commit id>"
> 
> In local.conf:
> 
> SRCREV_linux-wandboard = "<my local branch commit id>"
> 
> I always get the checkout of the SRCREV assignment done in the recipe file, not
> the one I set in local.conf.
> 
> Any idea why?  The only thing I can think of is that SRCREV is evaluated completely before
> local.conf settings are evaluated.

You can't do this in local.conf

The best way is to have another layer with a .bbappend for that recipe.  You can
then override these variables in that file.

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