Mads,

I am all set now, under a fresh Fedora 10. But it seems that the
generated command for rpm does not work.

it calls:

$ rpm -ba --define _topdir xxx --clean build/xxx/foo.spec

-ba unkown option.

(My Fedora runs rpm 4.6.0rc3)

Anything special to set under Fedora ?

This is strange because bdist_rpm will call -ba, -bs or -bb and
none of them seem to be present in this version of RPM,
while it is present on the standalone RPM I run under MacOsX (5.0)