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Date: Thu, 9 Sep 2004 09:55:02 -0400
From: Christopher Faylor <cgf-no-personal-reply-please AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: Is it free to use
Message-ID: <20040909135502.GC27325@trixie.casa.cgf.cx>
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References: <OF6CBC2D37 DOT 10E924C4-ON48256F0A DOT 00203BCE AT TMHK> <414007D6 DOT 7DB36622 AT dessent DOT net>
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On Thu, Sep 09, 2004 at 12:35:50AM -0700, Brian Dessent wrote:
>Alain_SK_Yip AT btm DOT com DOT hk wrote:
>
>> We are using Linux and UNIX environment to develop our own applications.
>> By installing the Cygwin/X X Server, Xlib and Xclients etc., our developers
>> can
>> 1. use our own Windows base PC to emulate a UNIX-like environment to do the
>> development;
>> 2. use the X server to connect to X windows of Linux and AIX;
>> 3. use the Secure Shell (ssh) to connect to AIX servers;
>> 4. use powerful scripts of Unix to automate Windows workstation.
>> 
>> We shall use the cygwin in around thirty Window based PC.
>> 
>> Would like to clarify that will be free of charge.
>
>Have your company's lawyers read the GNU Public License and answer that
>for you.  It's quite well explained exactly what the GPL allows and
>doesn't allow on <http://www.gnu.org/copyleft/gpl.html> and
><http://www.gnu.org/licenses/gpl-faq.html>.  This is not a legal advice
>mailing list, and answering legal questions is not the purpose of this
>list.

Actually, the licensing information is here:

http://cygwin.com/license.html

That is the place to start.

The bottom line is that if you develop using cygwin's gcc your applications
are GPLed when you release them.  This means that if you are developing software
for eventual release, you must also make the source code available when you
make binaries available.

If you want other arranagements then you do have to pay for that.

But, the lawyer advice is still sound.  You really should check this out
thoroughly if you are going to be releasing software eventually.

cgf

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