[Bf-committers] Blender, CSG and Carve.

Cyril Brulebois cyril.brulebois at enst-bretagne.fr
Wed Feb 13 03:14:40 CET 2008


(I'm no Blender developer, I'm just passing by.)

On 13/02/2008, Tobias Sargeant wrote:
> I guess the question, fundamentally, is: is the Qt license free
> enough that it could be used in Blender? If it is, then I think
> that's fine. I certainly didn't intend to suggest that I wanted to
> place any restrictions on how Blender could be used.

Just to clarify: If you mean QPL (only) by “Qt license”, it's not
“free enough”. As you can read from various places [1,2], QPL and GPL
are incompatible.

 1. http://en.wikipedia.org/wiki/QPL#Opposition_to_the_license
 2. http://www.gnu.org/licenses/license-list.html#GPLIncompatibleLicenses

However, if you mean the current license of the Qt components, i.e. a
triple license[3]: QPL (as far as I can tell, although the link just
refers to “commercial”), GPLv2, and GPLv3, that would be fine for
inclusion into Blender.

 3. http://labs.trolltech.com/blogs/2008/01/19/qt-3-and-4-licensed-under-gplv3/

I guess that QPL+GPL dual-licensing might suit your needs as well as
Blender's. As far as I can tell, Blender is GPLv2+ (literally: “either
version 2 of the License, or (at your option) any later version”), so
you might want to specify the same version(s), so as to make it as
smooth as possible.


Cyril Brulebois
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