Yes, it is BSD 3-clause license. Added a link in front-page. As of GSL, I am not a guru on licensing, AFAIK, dynamic linking is a gray area and you can compile

Yes, it is BSD 3-clause license. Added a link in front-page. As of GSL, I am not a guru on licensing, AFAIK, dynamic linking is a gray area and you can compile ccv without GSL dependency.