Re: [ANNOUNCE] XML/Ada 0.5 released

[Thierry Lelegard <thierry.lelegard@canal-plus.fr>]

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tmoran@acm.org a �crit :
> 
> >1) You say that referencing the symbol "foo" from libfoo.so and linking
> >   against libfoo.so makes your application fall under GPL. Right?
>   Your *application* isn't GPLed, but the executable file produced by
> the linker is GPLed.
> 
> >     handle = dlopen ("libfoo.so", ...);
> >     foo_p = dlsym (handle, "foo");
> >     (*foo_p) (....);
> >
> >   You no longer *link* against libfoo.so. There is no stronger interaction
> >   between your application and libfoo.so than you have with "ls" when you
> >   use system().
> >
> >   However, the result is technically identical to point 1.
>   No it isn't.  In (1) you are distributing a file that contains
> material copyrighted (GPL) by someone else, while in (2) you are
> distributing a program whose documentation says "to run this you
> will need to have a copy of ... on your system."
>   It's not a question of strength of interaction.  It's a question
> of what's in the file(s) you are distributing copies of.

No, I don't agree. When you link against a shared library (.so), you
don't include anything from the .so file. You just mark a reference
and you need the .so file on the target system. So, in both cases you
don't redistribute anything that is GPL'ed.

-- Thierry
____________________________________________________________________________

Thierry Lelegard, "The Jazzing Troll", Email: thierry.lelegard@canal-plus.fr
CANAL+ Technologies, 34 place Raoul Dautry, 75906 Paris Cedex 15, France
Tel: +33 1 71 71 54 30   Fax: +33 1 71 71 52 08   Mobile: +33 6 03 00 65 75
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