begin Chris D. Sloan quotation: > That can only be done if the all of the relevent copyright holders can > be found and their permissions obtained, right?
I believe the gentleman's hypothetical concerned specifically software available to recipients under GPL v. 2 "or any later version". So, the answer to your question is "No, they've already given that permission in advance." > Assume there is a program called foo which is licensed under GPL v. 2 > or, at your option any later version. Can I make a change to that > program and release [my] version of foo under only GPL v. 2? You can make any (lawful) terms you wish apply to your own additions.[1] You have no power to change other people's terms, pertaining to their code. [1] If those terms are compatible with those of the codebase you're modifying, then you and others might even be able to lawfully distribute the result. -- This message falsely claims to have been scanned for viruses with F-Secure Anti-Virus for Microsoft Exchange and to have been found clean. -- license-discuss archive is at http://crynwr.com/cgi-bin/ezmlm-cgi?3