[yocto] How to build 32-bit x86 host 32-bit powerpc target cross compiler, on a 64-bit x86 host

[Elvis Dowson]

Hi,
      I am running Ubuntu 12.04 LTS 64-bit. I have a colleague who doesn't have a 64-bit linux installation. What I'd like to be able to do is to build a 32-bit host 32-bit powerpc target cross compiler, on my 64-bit machine. 

How can I configure Yocto to do this? 

At the moment, I've already generated a meta-toolchain SDK, which installs into :

/opt/poky/1.2+snapshot/sysroots/x86_64-pokysdk-linux/usr/bin/ppc440-poky-linux/

How can I generate a the 32-bit hosted cross compiler on my 64-bit yocto build machine? I really didn't quite understand the term canadian-cross compiler, until now!! ;-) Now I know!! 

Best regards,

Elvis Dowson
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