In LAPACK xerbla is an error handling function. LAPACK routines print out their errors using that function. python_xerbla is a version of the function friendly with Python.

I had to make a version of lapack_lite, following the instructions present in lapack_lite inside the linalg package. I needed to do so as I use some routines not present on the current lapack_lite (notably the single precision ones and some extra).

The build configuration is inspired by the build configuration of linalg (i.e. ruthlessly copied :) ).