[oe] slight different confirurations for a package

[Denys Dmytriyenko]

On Wed, Sep 16, 2009 at 10:25:17AM -0700, C Michael Sundius wrote:
> I'd like to be able to build several different configurations of the same
> package and I'm wondering if the community might have some good input on the
> best way to organize this. My project has several images that are built for
> various products and customers and hardware. Generally all of the software
> is the same save a few key packages. (really even the kernel is constant
> across all platforms). and right now I have a different disto.conf file that
> corresponds to an image recipe for each platform.
> 
> I want to be able to build all of the platforms together within the same out
> dir. (so I don't have to rebuild the bulk of the software wasting disk space
> and time).
> 
> I've thought about defining separate recipes:
>      (foo-config1.bb, foo-config2.bb)

Quick and dirty: If you use the same distro, but have separate recipes 
(foo-config1.bb and foo-config2.bb), you can place them under separate 
tasks/images (image1.bb and image2.bb) and build both images. All the 
packages, except foo-* and image1/2 will be shared and built only once, so no 
wasting of disk space and time.

> or simply using a variable to define ${PN} from within the recipe:
> 
>     PN = ${DISTRO_CONFIG}
> 
>  I suppose these could work, but I'm wondering if I can create a whole new
> directory under work and staging like when I set PACKAGE_ARCH =
> ${MACHINE_ARCH} for the kernel and drivers.
> 
> as I said, right now I have a separate distro/*.conf file for each image
> (and thus configuration) I build, really the difference between these is the
> configuration of just a few packages all other software is built w/ the same
> recipe and configs. Is there a way anyone can think of to consolidate these
> so I can build everything without
> changing the local.conf (DISTRO variable).
> 
> I realize this is a nebulous question, but if anyone has an experience
> similar where they have had to organize various builds and found a clean or
> better way to build them all for both development and production or you have
> some opinions about how you made your decisions to do things one way or
> another , I'd love to hear your comments.
> 
> Thank you
> Mike
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