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Re: using GPL api to be used in a properietary software

From: Isaac
Subject: Re: using GPL api to be used in a properietary software
Date: Thu, 17 Mar 2005 18:07:05 -0600
User-agent: slrn/ (Linux)

On Thu, 17 Mar 2005 13:02:36 +0100, Martin Dickopp 
<> wrote:
> Isaac <> writes:
>> On Wed, 16 Mar 2005 17:39:11 +0100, Martin Dickopp 
>> <> wrote:
>>> You can read about the position of the FSF here:
>>> In particular, if the separate GPL'ed executable has no purpose on its
>>> own, but is created solely to circumvent the license of the library,
>>> then it is *not* okay.
>> The quoted link seems to suggest that using pipes as IPC and execing a
>> GPLed binary is a satisfactory work around.
> Not at all:
>| By contrast, pipes, sockets and command-line arguments are
>| communication mechanisms *normally* used between two separate
>| programs.
> (Emphasis mine.)
> That suggests to me that the /mechanism/ of communication provides
> some hints...
>| But if the semantics of the communication are intimate enough,
>| exchanging complex internal data structures, that too could be
>| a basis to consider the two parts as combined into a larger
>| program.
> ...but that the /semantics/ of communication is really decisive.

That might be a fair interpretation except that dynamic linking is
pretty much rules out even without taking semantics into account.  IMO
that plus the willingness to accept pipes and command-line arguments
as normally ok adds up to an unjustified reliance on the mechanism
of communication. 


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