Ctalk uses these licenses because it is designed to work with GNU C primarily. Although Ctalk may be ported to work with other compilers, Ctalk and its source code may be distributed under the same terms as GNU C.
You may also distribute programs written with Ctalk under the terms of the GPL and LGPL. If you do distribute programs that work with Ctalk, then you should review the GNU Project's coding standards, at www.gnu.org.
Ctalk is distributed as source code, and it is free to modify and distribute. We suggest that you include the following statement in each source code module that you distribute.
/* This file is part of <YOUR PROJECT NAME> Copyright © <YEAR(S)> <YOUR NAME> <YOUR E-MAIL ADDRESS> Permission is granted to copy this software provided that this copyright notice is included in all source code modules. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St., Fifth Floor, Boston, MA 02110-1301 USA. */If you have questions about Ctalk licensing, please contact the Ctalk authors at the locations given in the documentation on this Web site.