Theano fails due to NumPy Fortran mixup under Ubuntu

Question

I installed Theano on my machine, but the nosetests break with a Numpy/Fortran related error message. For me it looks like Numpy was compiled with a different Fortran versio

Answer 1

I had the same problem, and after reviewing the source code, user212658's answer seemed like it would work (I have not tried it). I then looked for a way to deploy user212658's hack without modifying the source code.

Put these lines in your theanorc file:

[blas]
ldflags = -lblas -lgfortran

This worked for me.