running Build... how to run parallel?

In the pod for Module::Build, it says:

     I don't like the core idea of "MakeMaker", namely that "make"
     should be involved in the build process.  ...

But the benefit of using makefiles is readily apparent for those
Perl modules that use MakeMaker... they can automatically make
use of parallel build abilities present on today's computers.

Module::Build, in re-inventing the dependency and process
handling of Make seems to have made how to do the equivalent
of "make -j" obtuse or opaque.

Is there a hidden switch for this?  I don't see anything documented
in Module::Build.  Certainly is a good reason for re-use of standard
components...  as they are improved, build procedures can usually,
automatically benefit...

Am I missing a feature somewhere?

Thanks,
linda