>On Mar 12, 2007, at 5:20 PM, Bob Delaney wrote:
>
>>>> It is freeware, but it's based on NTL which is GPL. From Bob's
>>>> page
>>>> for the Extended plugin:
>>>>
>>>> "NTL is free software, and may be used according to the terms of
>>>> the
>>>> GNU General Public License. A copy of the required license is
>>>> included with Extended Plugin."
>>>>
>>>> And, unfortunately the GPL prevents us from including it in a
>>>> commercial app unless we also GPL the commercial app.
>>>
>>> In clarification, if it was released as LGPL (Lesser GPL for
>>> Libraries), we could include it so long as we provided the source for
>>> the plugin on request and provided any modification we make back into
>>> the original code.
>
>HI Bob,
>
>Thanks for checking in on this!
>
> > I'm not at all an expert in interpreting the GPL. But do note this
>> excerpt from "NTL Copyright.txt":
>>
>> "However, NTL should not be linked in a commercial program
>> (although using data in a commercial
>> product produced by a program that used NTL is fine)."
>>
>> So is my plugin counted as a program that uses NTL?
>
>Yes, because you appear to be using Victor's NTL code directly within
>your plugin (I assume from your inclusion of Victor's license info).
>Therefore, your plugin becomes GPL by direct reference
>unfortunately. As to your giving your plugin away, you are not
>directly affected by the GPL restrictions, but for commercial
>entities, the GPL prohibits our use within a non-GPL'd application;
>even if we were publishing the source of our app and wanted to
>release it under a different license such as the BSD or Mozilla
>licenses, we couldn't include GPL'd code.
>
>Of course, I could have simply kept my mouth shut and most probably
>no one would have known, but ...
>
>Tim
>--
>Tim Jones
>[EMAIL PROTECTED]
Tim,
I guess I'm interpreting this statement wrongly:
"... (although using data in a commercial
product produced by a program that used NTL is fine)."
My plugin produces data generated by NTL. The
statement seems to say it's OK for a commercial
product to use this data. NTL is not directly
connected as a new class to REALbasic through my
plugin. Only a small part of NTL is available. It
took considerable effort to devise new classes
for RB which conveyed RR (ExtFloat) and ZZ
(ExtInteger) types via my plugin back and forth
between RB and NTL. I had to put in many
overflow, etc. tests so that no invalid data was
presented to NTL. Else NTL would ExitToShell, and
any application made with my Extended Plugin
might quit without warning. No one has yet
complained of this, so I guess I did a good job
there.
But I repeat that I'm not at all an expert in
interpreting the GPL. Now I'm not sure I should
have included that NTL Copyright.
Bob
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