OpenCM, as a whole, may be copied under the terms of the GNU GENERAL
PUBLIC LICENSE, version 2.0. A copy of this license can be found in
the top of the distribution source tree in the file licenses/GPL-2.0.


Most individual files in OpenCM are covered by the modified BSD
copyright. Regrettably, the libgdiff library is derived from GNU Diff,
which is licensed under the GNU General Public License (GPL). As a
result, OpenCM as a whole is contaminated by GPL.

As soon as we can remove our current dependency on libgdiff, we plan to
switch to the Common Public License (CPL) to ensure that users of
OpenCM receive adequate patent rights to use the tool. The absence of
such protection is a serious flaw in GPL. CPL is an open source
license.
