in sci-libs/scipy-0.6.0 fftw support is broken, this affects all archs and platforms. the offending file is scipy-0.6.0/scipy/fftpack/src/zfftnd_fftw.c with the offending function being miss named (hence a trivial patch), this is fixed in svn trunk but the release (scipy-0.6.0) is broken with regards to fft functionality (signal processing, etc). Reproducible: Always Steps to Reproduce: 1. USE=fftw emerge =sci-libs/scipy-0.6.0 2. in a python shell run, >>> import scipy >>> from scipy import signal Actual Results: see nasty output like, Traceback (most recent call last): File "filtfilt.py", line 2, in ? from scipy.signal import lfilter File "/usr/lib64/python2.4/site-packages/scipy/signal/__init__.py", line 12, in ? from signaltools import * File "/usr/lib64/python2.4/site-packages/scipy/signal/signaltools.py", line 7, in ? from scipy.fftpack import fft, ifft, ifftshift, fft2, ifft2 File "/usr/lib64/python2.4/site-packages/scipy/fftpack/__init__.py", line 10, in ? from basic import * File "/usr/lib64/python2.4/site-packages/scipy/fftpack/basic.py", line 13, in ? import _fftpack as fftpack ImportError: /usr/lib64/python2.4/site-packages/scipy/fftpack/_fftpack.so: undefined symbol: zfftnd_fftw Expected Results: to see a prompt to then be able to run my signal processing code. either apply a change like http://projects.scipy.org/scipy/scipy/changeset/3306#file0 to scipy-0.6.0/scipy/fftpack/src/zfftnd_fftw.c or compile without fftw support.
Created attachment 132560 [details, diff] renames function zfftnd_mkl to zfftnd_fftw this is fixed upstream in the development svn, see, http://projects.scipy.org/scipy/scipy/changeset/3306#file0
Thank you very much for pointing this out and your patch. I've fixed the issue in scipy-0.6.0-r1. cheers, Markus
