Mail Archives: cygwin/2003/06/19/18:53:24
> * In message <20030619221316 DOT GC7219 AT tortuga DOT etc DOT sk>
> * On the subject of "Re: Question about Cygwin License"
> * Sent on Fri, 20 Jun 2003 00:13:16 +0200
> * Honorable Marcel Telka <marcel AT telka DOT sk> writes:
>
> On Thu, Jun 19, 2003 at 05:51:44PM -0400, Cary Lewis wrote:
> > I want to use cygwin with a proprietary system.
> >
> > As I do not want to publish my source code, I know I need a "breakout"
> > license from RedHat.
> >
> > I am not changing cygwin, I am simply using the cygwin.dll to get a Unix
> > based system to run under Windows.
>
> Cite from GNU GPL <http://www.gnu.org/licenses/gpl.html>:
>
> Activities other than copying, distribution and modification are not
> covered by this License; they are outside its scope. The act of
> running the Program is not restricted, and the output from the Program
> is covered only if its contents constitute a work based on the Program
> (independent of having been made by running the Program). Whether that
> is true depends on what the Program does.
linking against a GNU GPL (not LGPL!) library makes your program GPL,
even if the library is dynamic (DLL).
<http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/*checkout*/clisp/clisp/doc/Why-CLISP-is-under-GPL?rev=HEAD>
therefore, if you distribute a program which relies on cygwin.dll
(which, IIUC, is released under the GNU GPL), you have to either
release the source code under GNU GPL, or buy a different license from
the (C) holder (RedHat).
IANAL.
--
Sam Steingold (http://www.podval.org/~sds) running RedHat9 GNU/Linux
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