It appears that math/fftw is supposed to build rfftw libraries in
addition to the fftw3 libs, even the fftw buildlink file indicates
this :

EVAL_PREFIX+=   BUILDLINK_PREFIX.fftw=fftw
BUILDLINK_PREFIX.fftw_DEFAULT=  ${LOCALBASE}
BUILDLINK_FILES.fftw+=  include/fftw3.f
BUILDLINK_FILES.fftw+=  include/fftw3.h
BUILDLINK_FILES.fftw+=  lib/libfftw3.*
BUILDLINK_FILES.fftw+=  lib/librfftw.*

But they aren't built and I don't quite see in the source *where*
they would be built. Anyone know what's up with this?

Thanks