Hi Charles, Charles Plessy wrote: > it looks like you are discussing the file rtengine/cubic.cc in RawTherapee: > http://code.google.com/p/rawtherapee/source/browse/trunk/rtengine/cubic.cc correct > I will answer to your last question first. If the RawTherapee authors obtained > the agreement of Ken Turkowski to relicense his work, then there is no problem > to have it licensed under the GPL and the above custom license. The GPL gives I would expect some kind of notice about the re-licensing agreement, though. > the freedoms that are necessary for Debian and are not explicitely written in > the original license, and the original license does not withdraw freedoms given > by the GPL. > > If you have doubts that the relicensing was permitted, then it is better to > contact both parties before proposing a RawTherapee package to Debian. The > original license cubic.cc is vague by todays standards, and it would be > preferable to check with the original author that he really meant that he > does not want his source code to be modified. > > rtengine/cubic.cc is not very long and implements an algebra forumla > that was discovered centuries ago. If it is confirmed that there are license > issues, for instance if the original author is not reachable, then replacing > the file can be the easiest solution to the problem. True. Thanks! Best, Ludovico
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