Bug#826036: python3-pyfftw: importing pyfftw fails with ImportError/undefined symbol fftwl_plan_with_nthreads

[Henry Gomersall]

As per the bug report on ubuntuforums.org
(http://ubuntuforums.org/showthread.php?t=2326008)

There is also an issue open on github for this:
https://github.com/pyFFTW/pyFFTW/issues/112

Are you able to give more information on this.

Does the relevant FFTW lib file exist - probably something like:
/usr/lib/x86_64-linux-gnu/libfftw3l_threads.so.3.4.4

If so, is the fftwl_plan_with_nthreads symbol shown with:

nm -D /usr/lib/x86_64-linux-gnu/libfftw3l_threads.so.3.4.4

Finally, if those both look fine, what does the following report:

ldd /usr/lib/python2.7/dist-packages/pyfftw/pyfftw.x86_64-linux-gnu.so

(specifically, the reference to libfftw3l_threads.so)