Dependencies: The following shared libraries or equivalents are required (version numbers are those used for testing this module.) liblapack.so.3 libblas.so.3 libg2c.so.0 Linking against these shared libaries requires, for instance under debian, that the following development packages be installed. lapack3-dev library of linear algebra routines 3 - static library refblas3-dev Basic Linear Algebra Subroutines 3, static library # The following is a dependency of lapack3-dev, and refblas3-dev (libg2c0-dev GNU Fortran 77 library development) These libraries are used in building upstream levmar library. There are other options for providing the lapack and blas routines. If you use these other libraries, you have to edit Makefile.PL