On Thu, Jul 31, 2014 at 10:59:47AM -0400, Steve Stallings wrote:
> Will the s-o-b enforcement mechanism insist on GPL or will
> it also allow "compatible" or partially compatible submissions
> such as LGPL (like the original HAL) or totally unrestricted
> code (perhaps BSD)?

Any author is free to write code and release it under the license or
licenses of her choice, Signed-off-by or not.

Signed-off-by is simply a declaration that at least one of the licenses
is compatible with the specific file's license (if one is given; we'd
still prefer to see a license declaration in every source file), and with
the project's overall license, GNU GPL version 2 with "or later" clause
for new contributions.

So, for instance, if you write some code, you can release it under the
BSD license, add your S-O-B and contribute it to LinuxCNC; BSD, in the
"modified, 3-clause BSD license" form[1], is widely recognized to be
compatible with GPL (that is, you can put the two together and treat the
result as all being GPL'd), and with your S-O-B you affirm that you
accept this interpretation.

Jeff
[1] https://www.gnu.org/licenses/license-list.html#ModifiedBSD

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