The libraries which are part of this package are licensed under the terms of the GNU Lesser General Public License, version 3. Libraries are located under the subdirectory libs/ of the source package. A copy of the license is available in the file lgpl-3.0.txt which can be found in the source archive. You can read it here: GNU Lesser General Public License, version 3 or on the GNU site.

Applications which are part of this package are licensed under the terms of the GNU General Public License, version 3. Applications are located under the apps/ subdirectory of the source package. A copy of the license can be found in the file gpl-3.0.txt which can be found in the source archive. You can read it here: GNU General Public License, version 3 or on the GNU site.

Test programs and tools are put into public domain, unless explicitly specified otherwise in the header of the source files. Test programs are located under the tests/ subdirectory, and tools are located in tools/.

The lens database is licensed under the Creative Commons Attribution-Share Alike 3.0 license. The database is located under the data/ subdirectory of the source package. You can read it here: Creative Commons Attribution-Share Alike 3.0 Unported or on the Creative Commons Web site.