How to cross compile custom kernel?

[Paul Howarth]

David Wolinski wrote:
> I have a fast x86_64 machine and a slow x86 machine.  I'd like to use
> the fast x86_64 machine to build a custom kernel for the x86 machine.
> 
> On the x86_64 machine:
> 
>   -  In the kernel build tree, I copy configs/kernel-XXX-i686.config to
> my working .config file since I want the kernel built for that
> architecture
>   -  "make gconfig" to customize some kernel options
>   -  But while configuring I notice that all of the architecture options
> have been set to x86_64 choices (and x86 choices are unavailable)
> 
> Clearly "make gconfig" has adjusted the original .config options to suit
> my build machine's x86_64 architecture.
> 
> I still want to use "make gconfig" to customize kernel options, but how
> can I prevent it from changing the architecture automatically?
> 
> Thanks for any help.

It might be worth trying:

setarch i386 make gconfig

Paul.