# Configure Problems

## Error message

Deprecated function: The each() function is deprecated. This message will be suppressed on further calls in node_privacy_byrole_nodeapi_prepare() (line 216 of /var/www/exc/sites/all/modules/node_privacy_byrole/node_privacy_byrole.module).
• blas (or lapack) not found (or not linked)

The blas library, as well as the lapack, is a mandatory library for the EXC code. If the library is not in a standard directory, the ./configure will not find it. Use the option

--with-blas="/dir/where/the/blas/are/installed/"

However there's an important thing to know:
when linking libraries to fortran code is MUCH RECOMMENDED to compile all libraries with the same compiler (and version) you use to compile EXC.

 Body: The new version of EXC is available. In particular the finite momentum transfer has been implemented. Body: A new version of the code has been released: v3.1. Few changes and some bug corrections for this intermediate release. Body: A new version of the code has been released: v3.0. Body: Electronic excitations are probed by experimental techniques such as optical absorption, EELS and photo-emission (direct or inverse). Body: Theoretical Spectroscopy Lectures: Theory and Codes