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Date: Mon, 18 Jul 2011 08:05:25 -0600
From: Gary Thomas <gary@mlbassoc.com>
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To: Chris Larson <clarson@kergoth.com>
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Cc: Poky Project <poky@yoctoproject.org>
Subject: Re: Order of .conf processing?
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On 07/18/2011 07:59 AM, Chris Larson wrote:
> On Mon, Jul 18, 2011 at 6:51 AM, Gary Thomas<gary@mlbassoc.com>  wrote:
>> What's the order of processing of the various .conf files?
>>
>> It seems to me that bitbake.conf must be first as it seems
>> impossible to override settings in that file using a soft
>> assignment.  In particular, local.conf often has soft settings
>> but these dont' seem to change what's in bitbake.conf
>
> BitBake only parses one global configuration file, bitbake.conf. It's
> bitbake.conf that includes/requires all the other configuration files.
> You can see the order by reading those inclusions in bitbake.conf.
> Historically, the intention was for the configuration file load order
> to be relatively parallel to the overrides order -- two different
> mechanisms for implementing what is essentially a layered architecture
> for the metadata, allowing, generally, more specific information to
> override more general information. The configuration file order
> differs slightly from that, however, as it's not possible to load the
> distro or machine config files after local.conf, as local.conf is
> generally where DISTRO and MACHINE are defined.

In that case, isn't using ?= assignments in bitbake.conf a bit misleading?

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