The current PDL::FFTW binding uses the FFTW version 2 API.
The current FFTW API is FFTW3. It would be nice to have a
PDL::FFTW3 module so that FFTW would be built by default
on most current systems (since if FFTW is installed, it is usually
the current release 3 and not the version 2).
This was entered as a bug but it is really a feature request.
I'm moving it to this tracker as part of preparation for the
upcoming PDL-2.4.7 release. See the log from sf.net bug
#1059020, "Problem with FFTW version 3.0.1" for the