Can a kernel rpm be built for i686 on x86_64?

[William F. Acker WB2FLW +1 303 722 7209]

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?

           TIA.


-- 
           Bill in Denver