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Re: Mercury front-end
On 02-Jan-2001, Jeffrey A Law <law@redhat.com> wrote:
>
> It might be appropriate. However the first thing that needs to be settled
> is the copyright status of the changes (of both your changes and the
> existing Mercury code).
The existing Mercury code is GPL'd / LGPL'd. We also use the Boehm
(et al) GC, which has a BSD-style license (without the advertising
clause).
The C side of my changes are a derivative work of Tim Josling's `toy'
GCC front-end. The Mercury side of my changes are in a few parts a
derivative work based on existing code in the Mercury compiler.
The new part of my changes are copyright by me, I believe.
I would be happy to sign the rights over to the FSF.
My employer (The University of Melbourne) might perhaps have some
claim on them. I will probably be able to persuade them to sign a
form either disclaiming ownership or assigning the rights to the FSF,
for the C side of the changes. For the Mercury side, and the existing
Mercury compiler, that won't happen, since we (the Mercury group here)
want the freedom to release the Mercury distribution under different
licenses in future. But some kind of joint ownership might be
acceptable, if that is possible.
Where can I obtain the appropriate forms?
P.S. For completeness, here's an extract from the README file in the
Mercury distribution, which states the license conditions for the
relevant parts of the Mercury distribution (I've omitted the license
conditions for the example Mercury programs that we distribute,
since that would be just "mere aggregation").
| This directory contains the source distribution for the University of
| Melbourne Mercury compiler, version DEV.
|
| The Mercury implementation is free software, but it is Copyright
| (C) 1993-2001 The University of Melbourne. It is distributed
| under the terms of the GNU General Public License. See the file
| COPYING for copying permission.
|
| The Mercury library and runtime (the files in the library and
| runtime subdirectories) are distributed under the terms of the
| GNU Library General Public License. See the file COPYING.LIB for
| copying permissions for those files.
|
| If those licencing arrangements are not satisfactory, please
| contact us! We are willing to offer alternative arrangements,
| if the need should arise.
|
| The subdirectory `boehm_gc' contains a slightly modified copy of
| version 5.0alpha3 of the conservative garbage collector distributed
| by Hans Boehm:
|
| Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers
| Copyright (c) 1991-1995 by Xerox Corporation. All rights reserved.
| Copyright (c) 1996-1999 by Silicon Graphics. All rights reserved.
| Copyright (c) 1999 by Hewlett-Packard Company. All rights reserved.
|
| THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY
| EXPRESSED OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
|
| Permission is hereby granted to use or copy this program for any
| purpose, provided the above notices are retained on all copies.
| Permission to modify the code and to distribute modified code is
| granted, provided the above notices are retained, and a notice
| that the code was modified is included with the above copyright
| notice.
|
| A few files (config.guess, config.sub) are derived from code that is
| copyright by the Free Software Foundation, Inc, and are distributed
| under the GNU General Public License version 2.
--
Fergus Henderson <fjh@cs.mu.oz.au> | "I have always known that the pursuit
| of excellence is a lethal habit"
WWW: <http://www.cs.mu.oz.au/~fjh> | -- the last words of T. S. Garp.