[SciPy-User] ... numpy/linalg/lapack_lite.so: undefined symbol: zungqr_

[David Cournapeau]

On Wed, May 2, 2012 at 9:45 PM, Kliment <otrov at hush.ai> wrote:

> Hi,
>
> I compiled lapack, atlas, umfpack, fftw in local folder, in similar
> way as described here: http://www.scipy.org/Installing_SciPy/Linux
> on 32bit Ubuntu Precise
>
> In ~/.local/lib I have:
> ========================================
> libamd.2.2.3.a
> libamd.a -> libamd.2.2.3.a
> libatlas.a
> libcblas.a
> libf77blas.a
> libfftw3.a
> libfftw3.la*
> liblapack.a
> librefblas.a
> libsatlas.so*
> libtmglib.a
> libumfpack.5.5.2.a
> libumfpack.a -> libumfpack.5.5.2.a
> ========================================
>
> In ~/.local/include I have:
> ========================================
> amd.h
> atlas/
> cblas.h
> clapack.h
> fftw3.f
> fftw3.f03
> fftw3.h
> fftw3l.f03
> fftw3q.f03
> UFconfig.h
> umfpack.h
> <various umfpack_[...].h files>
> ========================================
>
> My site.cfg looks like this:
> ========================================
> [DEFAULT]
> library_dirs = $HOME/.local/lib
> include_dirs = $HOME/.local/include
>
> [atlas]
> atlas_libs = lapack, f77blas, cblas, atlas
>
> [amd]
> amd_libs = amd
>
> [umfpack]
> umfpack_libs = umfpack, gfortran
>
> [fftw]
> libraries = fftw3
> ========================================
>
> I extracted numpy and run:
>
> python setup.py build --fcompiler=gnu95
> python setup.py install --prefix=$HOME/.local
>
> I then run python interpreter and try to import numpy, when I
> receive import error:
>
> ImportError: /home/vlad/.local/lib/python2.7/site-
> packages/numpy/linalg/lapack_lite.so: undefined symbol: zungqr_
>

Most likely you did not build atlas and/or lapack correctly.

Unless you are familiar with debugging those kind of issues, I strongly
recommend you to build numpy against atlas as given by ubuntu (something
like apt-get install libatlas-base-dev should do the trick).

David
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