![](https://secure.gravatar.com/avatar/858c3d3fbb3b51fd862b0486c44e590f.jpg?s=120&d=mm&r=g)
You can also look to system_info.py file, in particular, the definition of atlas_info class and put some print commands inside the calc_info method to see at what point this method is failing. You can print out variables like lib_dirs, lapack_libs, atlas_libs, etc.
Yes, I've played a bit with those variables, ect. and managed to let scipy find the ATLAS folder, but NOT the souces. This is the outout when running system_info.py (modified to display where it's looking for sources): atlas_info: FOUND: libraries = ['lapack', 'f77blas', 'cblas', 'atlas'] library_dirs = ['/usr/lib', '/home/strbr/ATLAS/lib/Linux_P4SSE2_2'] blas_info: FOUND: libraries = ['blas'] library_dirs = ['/usr/lib'] blas_src_info: ['/usr/local/src', '/home/strbr/ATLAS/src/lapack', '/home/strbr/ATLAS/src/blas'] NOT AVAILABLE fftw_info: NOT AVAILABLE lapack_info: FOUND: libraries = ['lapack'] library_dirs = ['/usr/lib'] lapack_src_info: ['/usr/local/src', '/home/strbr/ATLAS/src/lapack', '/home/strbr/ATLAS/src/blas'] NOT AVAILABLE x11_info: FOUND: libraries = ['X11'] library_dirs = ['/usr/X11R6/lib'] include_dirs = ['/usr/X11R6/include'] I wondering whether you could tell me where to look for these sources exactly. Also, is the clapack library supposed to be in the same folder with the other ATLAS libraries? I still get the same error message when loading the scipy module, so I guess I do need to let scipy find the sources first? Thanks Giovanni