[oe] openembedded with a prebuilt external toolchain

[Joey Oravec]

On 2/10/2011 3:58 PM, Tom Rini wrote:
> We talked about this a little on IRC and I provided the example of how 
> to use the CodeSourcery recipes that exist today.  The marvell 
> toolchain however will need it's own special love.

Yes! Much appreciated!

> Now what you'll want to do is make an external-toolchain-marvell.bb 
> and set TOOLCHAIN_BRAND to "marvell" and tweak TOOLCHAIN_VENDOR such 
> that we go from what OE normally says TARGET_SYS is to what your tools 
> actually say it is.  Then it's a matter of tweaking the contents of 
> external-toolchain-marvell.bb to copy the right things out of the 
> marvell install and into where OE wants them.  In this regard, the 
> -csl recipe may be more instructive than the -generic recipe as the 
> -generic recipe (along with external-toolchain.bb) are targeted at 
> toolchains exported by OE and thus require little mangling to work.

Both the -csl.bb and -generic.bb copy a bunch of stuff to STAGING_DIR in 
do_stage(). Of course in the long-run I need for the recipe to copy C 
libraries, but for now I should be able to leave the body blank. At 
least it'll use my compiler and run to completion. Right?

That's what I did and it seems to be ok. The "bitbake nano" example 
failed, looks like it wasn't linking ncurses. Another attempt with 
"bitbake busybox" worked and I saw some packages in the output folder. 
Looks good so far!

-joey