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Re^2: Perl modules and the GPL

by zwon (Abbot)
on Feb 01, 2010 at 21:56 UTC ( #820848=note: print w/replies, xml ) Need Help??

in reply to Re: Perl modules and the GPL
in thread Perl modules and the GPL

Any XS wrapper (statically) linking to a GPLed library

As far as I understand dynamic linking of GPL libraries with proprietary programs are not allowed either. There was a famous email conversation between RMS and Bruno Haible where they discussed this question.

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Re^3: Perl modules and the GPL
by Corion (Pope) on Feb 01, 2010 at 22:34 UTC

    There is no fact, mere "discussions with a lawyer" regarding dynamic linking, and I don't see the linking that Perl does (dynamically loading object code) as "creating a derivative work" in the same sense that linking to a C header creates a "derivative work", because to use the API from Perl does not involve the C headers.

    Building the XS component involves the C headers and thus makes the XS component a derivative work, but that cannot infect the Perl program, no matter how much RMS wants this to.

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