General Public License Version 3: A Legal View

The GPLv3
and LGPLv3
have been finally published and anybody working on open source should
be familiar with them.

Mark Radcliffe has made a
very good comparison of the version 2 and 3 of the GPL
. One thing
he doesn’t mention though is the or any later version clause,
which means that you could already redistribute a good amount of GPL2
software under the GPL3 license if the authors included the default
boilerplate text in the file headers that says either version 2 of
the License, or (at your option) any later version
..

Each version [of the GPL license] is given a distinguishing version number. If the Program specifies a version number of this License which applies to it and "any later version", you have the option of following the terms and conditions either of that version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of this License, you may choose any version ever published by the Free Software Foundation.

For instance the Linux Kernel (by omission) or the JDK
classes
(explicitly) are licensed only with GPL2.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s