Am Dienstag, den 21.06.2011, 10:56 -0300 schrieb Otavio Salvador:
> On Tue, Jun 21, 2011 at 07:13, Jürgen Lüters
> <[email protected]> wrote:
> > Copyright law does protect implementations only, not ideas nor
> > algorithms. Implementations do manifest itself in terms of sourcecode.
> > As long a the sourcecode (the implementation) is different everything is
> > ok. The implementation is not different if you change minor topics
> > (variable names ) only. In this case the newer work is based on the old
> > implementation and considered a derived work.
> > The technical examination and judgement is based on sourcecode
> > investigations only. The person who has written the code is from minor
> > interest.
>
> I have some friends that are from GNU and it does matter if the code
> has been changed using a previous code as reference. It is a difficult
> stuff to be discussed in jury but it can happen.
>
> The only safe way to avoid this is to reconstruct the code without
> this previous version as base. It doesn't seems as a valid option for
> FreeRDP case since we have based the code on a fork from RDesktop
> (like it or not) and thus most of basis (not the new code) is
> derivated work.
>
My post was a reaction toward Peters post. He claimed that a clean room
implementation is the only way to replace the gpl based software parts.
The law does not require this. The law, and the technical experts
reviewing this, expecting a different/distinct implementation. This
means an implemantion which is _not_ based on a former work.
> It seems that the only way to solve this is Cendio and their people
> allowing us to change license.
That is the best solution.
Kind regards
--
Jürgen Lüters
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