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Subject:	RE: Is it free to use
Date:	Thu, 9 Sep 2004 10:10:06 -0400
Message-ID:	<64AE3D5B518E3648ACC823FBCB0B737502767FF6@sr002-2kexc.ateb.com>
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From:	"Reid Thompson" <Reid DOT Thompson AT ateb DOT com>
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that's a dead url -- http://cygwin.com/licensing.html
Christopher Faylor wrote:
> 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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reid

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