This package was downloaded from http://sbcl.sf.net/ SBCL is derived from CMU CL, which was released into the public domain, subject only to the BSD-style "free, but credit must be given and copyright notices must be retained" licenses in the LOOP macro (from MIT and Symbolics) and in the PCL implementation of CLOS (from Xerox). After CMU CL was was released into the public domain, it was maintained by volunteers, who continued the tradition of releasing their work into the public domain. All changes to SBCL since the fork from CMU CL have been released into the public domain in jurisdictions where this is possible, or under the FreeBSD licence where not. Exceptions are: - src/runtime/ld-script.alpha-linux: GPL v2 (from binutils package) Thus, there are no known obstacles to copying, using, and modifying SBCL freely, as long as copyright notices of MIT, Symbolics, Xerox and Gerd Moellmann are retained.