Re: GPL compatible ?

Monday, April 14, 2008, 1:13:40 AM, Rahul Garg wrote:

> Hi.
> 1. Thanks for all your replies. I am a bit confused by now. Will look
> at slightly more permissive licenses than the GPL : either a GPL with
> some exceptions or MPL or CDDL. This way licensing will be clear to
> everyone. But will need to check with univ since this compiler is part
> of thesis work. Never thought that I will need to spend so much time  
> on licensing issues.
>
> 2. Under what license should I put the template files?

Whatever license you want to... What could be the problem with that?
Templates are not even the output of FreeMarker.

> Compiler output is used by end-users and I do not want the output
> text to come under any kind of restricted license. Perhaps I will
> just put the template file in public domain.
>
> thanks,
> rahul
>
> Quoting Daniel Lopez <[email protected]>:
>
>> One should check with the GNU guys themselves to be sure but, AFAIK,
>> you would not be able to distribute FreeMarker along with a GPL
>> product because the GPL license implies everything you distribute as
>> "the product" has to be GPLed.
>>
>> So, if I understood correctly what they told me the last time I
>> checked with them for another project, it depends on the licenses used
>> because if you distribute them together, they could be considered a
>> "combined work".
>> In that case: the original BSD license and GPL are known to be
>> incompatible, whereas the revised BSD and GLP v2 are considered
>> compatible:
>> http://www.gnu.org/licenses/gpl-faq.html#WhatIsCompatible
>> http://www.gnu.org/licenses/gpl-faq.html#OrigBSD
>>
>> It seems the problem lies in that the original BSD imposed some extra
>> restrictions and GLP prohibits that. It seems FreeMarker's license
>> also imposes the advertistments clause, so it might be considered
>> incompatible.
>>
>> In any case, you might want to check with them following these instructions:
>> http://www.gnu.org/licenses/gpl-faq.html#ManyDifferentLicenses
>>
>> It's simply sooooo confusing.
>> D.
>>
>> S'està citant Attila Szegedi <[email protected]>:
>>
>>>
>>> On 2008.04.13., at 6:51, Rahul Garg wrote:
>>>> Hi.
>>>> I am writing a compiler (written in Java) which I want to release
>>>> under the GPL. I am considering Freemarker for generating output
>>>> instead of the adhoc mechanism I have currently implemented.
>>>>
>>>> Is freemarker a good choice in such a case? Will I need to distribute
>>>> Freemarker sources and do I have to mark them as under the GPL?
>>>
>>> As far as I understand it:
>>>
>>> You can incorporate FreeMarker into a GPL licensed product, no
>>> problems with that. You can't relicense the FreeMarker codebase itself
>>> under GPL[*], meaning that someone can extract FreeMarker (either its
>>> binary or its source) from your product distribution, and then use the
>>> extracted artifact compliant to BSD license, without observing GPL.
>>> You'll need to clarify in your product's license that various parts of
>>> it fall under different licenses - namely, that FreeMarker bits are
>>> BSD licensed, and your original work is GPL licensed.
>>>
>>> BSD license doesn't require source distribution, so you needn't
>>> distribute the sources (but you can do it). By choosing GPL, you'll
>>> force whoever incorporates your compiler into their product to also
>>> ship their (and yours) source code with the product. But by willingly
>>> choosing to create a dependency on FreeMarker, you won't automatically
>>> extend these GPL restrictions to FreeMarker artifacts that you ship;
>>> they remain BSD licensed.
>>>
>>> In essence, by choosing GPL for your original work you'll force other
>>> products that rely on your original work to use GPL, but those people
>>> can still use FreeMarker binary or sources - even when they take them
>>> out of your distribution - without being subjected to GPL, only BSD.
>>> You can not represent that a bundled FreeMarker artifact is GPL
>>> licensed, as that'd be falsity, you must be clear that your product is
>>> built out from several different components with varying licenses.
>>>
>>> [*] Alternatively, you can take FreeMarker source code and relicense
>>> them under GPL. BSD license allows you to do that as long as you also
>>> observe the BSD requirements. You can no longer use the name
>>> "FreeMarker" in conjunction with it then though, in any way, including
>>> the Java package names. You're then essentially creating a GPL fork of
>>> the project, which is permitted, but you break any continuity with the
>>> name "FreeMarker" in that case. I don't think that's too sensible,
>>> though, as you'd need to keep your fork in sync with our future
>>> bugfixes etc on your own.
>>>
>>>> Does
>>>> Freemarker itself have any dependencies which again need to be
>>>> distributed under the GPL?
>>>
>>> FreeMarker can run without external dependencies. All its dependencies
>>> are optional.
>>>
>>> Attila.
>>>
>>>>
>>>>
>>>> thanks,
>>>> rahul
>>>
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>>
>>
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>>
>>
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>
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-- 
Best regards,
 Daniel Dekany


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