|
|
|
GNU GENERAL PUBLIC LICENSE
|
|
|
|
|
|
|
|
Version 1, February 1989
|
|
|
|
|
|
|
|
Copyright (C) 1989 Free Software Foundation, Inc. 51 Franklin St, Fifth Floor,
|
|
|
|
Boston, MA 02110-1301 USA
|
|
|
|
|
|
|
|
Everyone is permitted to copy and distribute verbatim copies of this license
|
|
|
|
document, but changing it is not allowed.
|
|
|
|
|
|
|
|
Preamble
|
|
|
|
|
|
|
|
The license agreements of most software companies try to keep users at the
|
|
|
|
mercy of those companies. By contrast, our General Public License is intended
|
|
|
|
to guarantee your freedom to share and change free software--to make sure
|
|
|
|
the software is free for all its users. The General Public License applies
|
|
|
|
to the Free Software Foundation's software and to any other program whose
|
|
|
|
authors commit to using it. You can use it for your programs, too.
|
|
|
|
|
|
|
|
When we speak of free software, we are referring to freedom, not price. Specifically,
|
|
|
|
the General Public License is designed to make sure that you have the freedom
|
|
|
|
to give away or sell copies of free software, that you receive source code
|
|
|
|
or can get it if you want it, that you can change the software or use pieces
|
|
|
|
of it in new free programs; and that you know you can do these things.
|
|
|
|
|
|
|
|
To protect your rights, we need to make restrictions that forbid anyone to
|
|
|
|
deny you these rights or to ask you to surrender the rights. These restrictions
|
|
|
|
translate to certain responsibilities for you if you distribute copies of
|
|
|
|
the software, or if you modify it.
|
|
|
|
|
|
|
|
For example, if you distribute copies of a such a program, whether gratis
|
|
|
|
or for a fee, you must give the recipients all the rights that you have. You
|
|
|
|
must make sure that they, too, receive or can get the source code. And you
|
|
|
|
must tell them their rights.
|
|
|
|
|
|
|
|
We protect your rights with two steps: (1) copyright the software, and (2)
|
|
|
|
offer you this license which gives you legal permission to copy, distribute
|
|
|
|
and/or modify the software.
|
|
|
|
|
|
|
|
Also, for each author's protection and ours, we want to make certain that
|
|
|
|
everyone understands that there is no warranty for this free software. If
|
|
|
|
the software is modified by someone else and passed on, we want its recipients
|
|
|
|
to know that what they have is not the original, so that any problems introduced
|
|
|
|
by others will not reflect on the original authors' reputations.
|
|
|
|
|
|
|
|
The precise terms and conditions for copying, distribution and modification
|
|
|
|
follow.
|
|
|
|
|
|
|
|
GNU GENERAL PUBLIC LICENSE TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION
|
|
|
|
AND MODIFICATION
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0. This License Agreement applies to any program or other work which contains
|
|
|
|
a notice placed by the copyright holder saying it may be distributed under
|
|
|
|
the terms of this General Public License. The "Program", below, refers to
|
|
|
|
any such program or work, and a "work based on the Program" means either the
|
|
|
|
Program or any work containing the Program or a portion of it, either verbatim
|
|
|
|
or with modifications. Each licensee is addressed as "you".
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1. You may copy and distribute verbatim copies of the Program's source code
|
|
|
|
as you receive it, in any medium, provided that you conspicuously and appropriately
|
|
|
|
publish on each copy an appropriate copyright notice and disclaimer of warranty;
|
|
|
|
keep intact all the notices that refer to this General Public License and
|
|
|
|
to the absence of any warranty; and give any other recipients of the Program
|
|
|
|
a copy of this General Public License along with the Program. You may charge
|
|
|
|
a fee for the physical act of transferring a copy.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2. You may modify your copy or copies of the Program or any portion of it,
|
|
|
|
and copy and distribute such modifications under the terms of Paragraph 1
|
|
|
|
above, provided that you also do the following:
|
|
|
|
|
|
|
|
a) cause the modified files to carry prominent notices stating that you changed
|
|
|
|
the files and the date of any change; and
|
|
|
|
|
|
|
|
b) cause the whole of any work that you distribute or publish, that in whole
|
|
|
|
or in part contains the Program or any part thereof, either with or without
|
|
|
|
modifications, to be licensed at no charge to all third parties under the
|
|
|
|
terms of this General Public License (except that you may choose to grant
|
|
|
|
warranty protection to some or all third parties, at your option).
|
|
|
|
|
|
|
|
c) If the modified program normally reads commands interactively when run,
|
|
|
|
you must cause it, when started running for such interactive use in the simplest
|
|
|
|
and most usual way, to print or display an announcement including an appropriate
|
|
|
|
copyright notice and a notice that there is no warranty (or else, saying that
|
|
|
|
you provide a warranty) and that users may redistribute the program under
|
|
|
|
these conditions, and telling the user how to view a copy of this General
|
|
|
|
Public License.
|
|
|
|
|
|
|
|
d) You may charge a fee for the physical act of transferring a copy, and you
|
|
|
|
may at your option offer warranty protection in exchange for a fee.
|
|
|
|
|
|
|
|
Mere aggregation of another independent work with the Program (or its derivative)
|
|
|
|
on a volume of a storage or distribution medium does not bring the other work
|
|
|
|
under the scope of these terms.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3. You may copy and distribute the Program (or a portion or derivative of
|
|
|
|
it, under Paragraph 2) in object code or executable form under the terms of
|
|
|
|
Paragraphs 1 and 2 above provided that you also do one of the following:
|
|
|
|
|
|
|
|
a) accompany it with the complete corresponding machine-readable source code,
|
|
|
|
which must be distributed under the terms of Paragraphs 1 and 2 above; or,
|
|
|
|
|
|
|
|
b) accompany it with a written offer, valid for at least three years, to give
|
|
|
|
any third party free (except for a nominal charge for the cost of distribution)
|
|
|
|
a complete machine-readable copy of the corresponding source code, to be distributed
|
|
|
|
under the terms of Paragraphs 1 and 2 above; or,
|
|
|
|
|
|
|
|
c) accompany it with the information you received as to where the corresponding
|
|
|
|
source code may be obtained. (This alternative is allowed only for noncommercial
|
|
|
|
distribution and only if you received the program in object code or executable
|
|
|
|
form alone.)
|
|
|
|
|
|
|
|
Source code for a work means the preferred form of the work for making modifications
|
|
|
|
to it. For an executable file, complete source code means all the source code
|
|
|
|
for all modules it contains; but, as a special exception, it need not include
|
|
|
|
source code for modules which are standard libraries that accompany the operating
|
|
|
|
system on which the executable file runs, or for standard header files or
|
|
|
|
definitions files that accompany that operating system.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
4. You may not copy, modify, sublicense, distribute or transfer the Program
|
|
|
|
except as expressly provided under this General Public License. Any attempt
|
|
|
|
otherwise to copy, modify, sublicense, distribute or transfer the Program
|
|
|
|
is void, and will automatically terminate your rights to use the Program under
|
|
|
|
this License. However, parties who have received copies, or rights to use
|
|
|
|
copies, from you under this General Public License will not have their licenses
|
|
|
|
terminated so long as such parties remain in full compliance.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
5. By copying, distributing or modifying the Program (or any work based on
|
|
|
|
the Program) you indicate your acceptance of this license to do so, and all
|
|
|
|
its terms and conditions.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
6. Each time you redistribute the Program (or any work based on the Program),
|
|
|
|
the recipient automatically receives a license from the original licensor
|
|
|
|
to copy, distribute or modify the Program subject to these terms and conditions.
|
|
|
|
You may not impose any further restrictions on the recipients' exercise of
|
|
|
|
the rights granted herein.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
7. The Free Software Foundation may publish revised and/or new versions of
|
|
|
|
the General Public License from time to time. Such new versions will be similar
|
|
|
|
in spirit to the present version, but may differ in detail to address new
|
|
|
|
problems or concerns.
|
|
|
|
|
|
|
|
Each version is given a distinguishing version number. If the Program specifies
|
|
|
|
a version number of the license which applies to it and "any later version",
|
|
|
|
you have the option of following the terms and conditions either of that version
|
|
|
|
or of any later version published by the Free Software Foundation. If the
|
|
|
|
Program does not specify a version number of the license, you may choose any
|
|
|
|
version ever published by the Free Software Foundation.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
8. If you wish to incorporate parts of the Program into other free programs
|
|
|
|
whose distribution conditions are different, write to the author to ask for
|
|
|
|
permission. For software which is copyrighted by the Free Software Foundation,
|
|
|
|
write to the Free Software Foundation; we sometimes make exceptions for this.
|
|
|
|
Our decision will be guided by the two goals of preserving the free status
|
|
|
|
of all derivatives of our free software and of promoting the sharing and reuse
|
|
|
|
of software generally.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
NO WARRANTY
|
|
|
|
|
|
|
|
9. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR
|
|
|
|
THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE
|
|
|
|
STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM
|
|
|
|
"AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
|
|
|
|
BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
|
|
FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE
|
|
|
|
OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME
|
|
|
|
THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
10. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
|
|
|
|
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE
|
|
|
|
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
|
|
|
|
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE
|
|
|
|
OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA
|
|
|
|
OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES
|
|
|
|
OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH
|
|
|
|
HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
|
|
|
|
END OF TERMS AND CONDITIONS
|
|
|
|
|
|
|
|
Appendix: How to Apply These Terms to Your New Programs
|
|
|
|
|
|
|
|
If you develop a new program, and you want it to be of the greatest possible
|
|
|
|
use to humanity, the best way to achieve this is to make it free software
|
|
|
|
which everyone can redistribute and change under these terms.
|
|
|
|
|
|
|
|
To do so, attach the following notices to the program. It is safest to attach
|
|
|
|
them to the start of each source file to most effectively convey the exclusion
|
|
|
|
of warranty; and each file should have at least the "copyright" line and a
|
|
|
|
pointer to where the full notice is found.
|
|
|
|
|
|
|
|
<one line to give the program's name and a brief idea of what it does.> Copyright
|
|
|
|
(C) 19yy <name of author>
|
|
|
|
|
|
|
|
This program is free software; you can redistribute it and/or modify it under
|
|
|
|
the terms of the GNU General Public License as published by the Free Software
|
|
|
|
Foundation; either version 1, or (at your option) any later version.
|
|
|
|
|
|
|
|
This program is distributed in the hope that it will be useful, but WITHOUT
|
|
|
|
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
|
|
|
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
|
|
|
|
|
|
|
|
You should have received a copy of the GNU General Public License along with
|
|
|
|
this program; if not, write to the Free Software Foundation, Inc., 675 Mass
|
|
|
|
Ave, Cambridge, MA 02139, USA.
|
|
|
|
|
|
|
|
Also add information on how to contact you by electronic and paper mail.
|
|
|
|
|
|
|
|
If the program is interactive, make it output a short notice like this when
|
|
|
|
it starts in an interactive mode:
|
|
|
|
|
|
|
|
Gnomovision version 69, Copyright (C) 19xx name of author Gnomovision comes
|
|
|
|
with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software,
|
|
|
|
and you are welcome to redistribute it under certain conditions; type `show
|
|
|
|
c' for details.
|
|
|
|
|
|
|
|
The hypothetical commands `show w' and `show c' should show the appropriate
|
|
|
|
parts of the General Public License. Of course, the commands you use may be
|
|
|
|
called something other than `show w' and `show c'; they could even be mouse-clicks
|
|
|
|
or menu items--whatever suits your program.
|
|
|
|
|
|
|
|
You should also get your employer (if you work as a programmer) or your school,
|
|
|
|
if any, to sign a "copyright disclaimer" for the program, if necessary. Here
|
|
|
|
a sample; alter the names:
|
|
|
|
|
|
|
|
Yoyodyne, Inc., hereby disclaims all copyright interest in the program `Gnomovision'
|
|
|
|
(a program to direct compilers to make passes at assemblers) written by James
|
|
|
|
Hacker.
|
|
|
|
|
|
|
|
<signature of Ty Coon>, 1 April 1989 Ty Coon, President of Vice
|
|
|
|
|
|
|
|
That's all there is to it!
|