Target i386 unknown

[Jean-Eric Cuendet]

Hi,
I'm trying to build a kernel from SRPMS (2.6.6-1.435 from FC2) and I'm 
unable to build the i386 target. It's needed at leats to get the Source 
package...
Running
    [root at testbed SPECS]# rpmbuild -ba --target i686 kernel-2.6.spec
    Building target platforms: i686
    Building for target i686
    Executing(%prep): /bin/sh -e /var/tmp/rpm-tmp.9481
which is fine, but running
    [root at testbed SPECS]# rpmbuild -ba --target i386 kernel-2.6.spec
    Building target platforms: i386
    Building for target i386
    error: Architecture is not included: i386
Which is bad...

Any idea? I run it on a P3 machine.
Thanks.
-jec