Posted by maqifrnswa on Dec 07, 2011; 5:08pm
URL: https://forum.librecad.org/LibreCAD-license-review-tp5050874p5056345.html

On Wed, Dec 7, 2011 at 12:01 PM, Rallaz [via LibreCAD]
<[hidden email]> wrote:
> inverse response:
>
> 2) the utility program ttf2lff is a modification of ttf2cfx:
> http://www.qcad.org/rsforum/viewtopic.php?t=415
> some parts have my copyright, but unmodified parts have copyright from RS.
>
> Is posible to mix licenses in one sorce file? like:
> ** code from Rallaz license GPLv2 or greater
> ** code from RibbonSoft license GPLv2

It is possible to mix licenses, but until all the original code is
removed it is GPLv2 only. Mix licenses allows for future upgrading or
changing over to new licenses while maintaining compliance in the
short-term.

> 1) the jwwlib files do not have any license and copyright, except:
> dl_jww.h -> based in dl_dxf.h from dxflib
> dl_jww.cpp -> based in dl_dxf.cpp from dxflib
> original repository:
> http://en.sourceforge.jp/cvs/view/jw-qcad/cad-qt4/jwwlib/src/

If it's based on dxflib, it should have at least the same license as
dxflib (since it is GPL.) It would be better to add the correct
license information and copyright information.

I'd be comfortable saying it is GPLv2-only since it is a derived work
from dxflib.


Thank you.
~Scott