[yocto] RFC: Rapid iterative development

[Tian, Kevin]

>From: Darren Hart
>Sent: Saturday, November 20, 2010 7:14 AM
>
>While working on a single package, I need to be able to tweak a variable
>in the new recipe, change the MACHINE in local.conf, etc. I'd like to be
>able to rapidly test my changes, but some of these changes trigger a
>long list of dependencies for various commands. While working on a new
>linux kernel recipe, I found it rebuilding a number of things that were
>either -native (can I force it to use the system version rather than
>building one) or seemed unrelated to the process at hand.

That's interesting. Did you build from scratch or incrementally? Ideally only
recipes being changed will be rebuilt in incremental way.

>
>Are there some best practices for iterative recipe development that
>speed things along?
>

"bitbake -k" is one method if you're sure the dependency doesn't change.
But if you change MACHINE, I think a whole rebuild except -native will
be required as it's the fundamental bit for target recipes.

Thanks
Kevin