Can a kernel rpm be built for i686 on x86_64?

[Alan Cox]

On Fri, 6 Nov 2009 03:15:59 -0700 (MST)
"William F. Acker WB2FLW +1 303 722 7209" <wacker at octothorp.org> wrote:

> Hi all,
> 
>       Years ago, I successfully built an i686 kernel using a machine running 
> the x86_64 distro.  The kernel seemed to run fine.  The only trouble I 
> found was when I tried to build an external module, the build failed.  It 
> turned out that the kernel-devel package had a binary called genksyms. 
> That was still being built as an elf64 binary.  I can no longer find that 
> binary, so I believe it's now OK to build all my packages for i686 and 
> x86_64 at once on an x86_64 machine.  Is this recommended?  If not, why 
> not?

It should work fine. It does with the base kernel from kernel.org and I
do this all the time.

Alan