Cygwin is used only for building Windows binaries.  The resulting binaries
are native Windows and neither use nor distribute the Cygwin DLL.  

(The Visual Studio VC++ tool chain is run from within the CygWin shell, and
that is what provides the completely-native Windows binary for Apache
OpenOffice.  If you use the same build process, that will be the case for
your builds with respect to Cygwin.)

If your built binaries incorporate essential dependencies on third-party
libraries, you must respect the license requirements on those libraries, as
well as the Apache License version 2.0 (and other licenses) on the Apache
OpenOffice source code.

 - Dennis


> -----Original Message-----
> From: Roman Kuksin [mailto:[email protected]]
> Sent: Monday, October 26, 2015 01:47
> To: [email protected]
> Subject: Does GPL apply when building AOO under CygWin?
> 
> Hello,
> 
> I am currently building AOO sources with CygWin under Windows XP x86
> using this instruction:
> https://wiki.openoffice.org/wiki/Documentation/Building_Guide_AOO/Step_b
> y_step#Windows_7
> 
> According to the link below I must distribute executables under the
> terms of GPL3+ if the Cygwin DLL is linked:
> https://cygwin.com/licensing.html
> 
> Is it the case?
> Is the Cygwin DLL linked when building AOO?
> Is it legal to distribute the AOO executables under the Apache license
> when CygWin is used?
> 
> Regards,
> Roman.
> 
> P.S.:
> I also posted this question here:
> https://forum.openoffice.org/en/forum/viewtopic.php?f=6&t=79966


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