Thanks for your response...

Leon Woestenberg wrote:

  - is binary compatible with the PPC405. 440, and Freescale 85xx cores.

    
binary compatible? You mean it can build binaries for those cores?
  
What I meant (but said poorly) was that it has pre-compiled binaries.  But its fine if I can build it under cygwin.  And I am thinking that I may drop the cygwin requirement, because its painful to do linux builds under it.
  
My preference is to use OpenEmbedded and do so under a Linux host
system (any will do).
As I don't want to be tied to a certain host OS, Emdebian or
Gentoo-Embedded are no-go for me.

I have used tools and rootfs systems like crosstool, buildroot, LFS before.

There is also LTIB by Freescale, tried that?
  
I need to look closer at LITB - but I was guessing it didn't have PPC4xx support.

Thanks!
-- 
Brian Silverman
Concept X, LLC