gpl(7)

NAME

gpl - GNU General Public License

DESCRIPTION

GNU GENERAL PUBLIC LICENSE

Version 2, June 1991

Copyright (c) 1989, 1991 Free Software Foundation,

Inc.
51 Franklin Street, Fifth Floor, Boston, MA

02110-1301, USA

Everyone is permitted to copy and distribute ver

batim copies
of this license document, but changing it is not

allowed.

Preamble

The licenses for most software are designed to take away

your

freedom to share and change it. By contrast, the GNU Gen

eral 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. This
General Public License applies to most of the Free Soft

ware
Foundation's software and to any other program whose au

thors commit to
using it. (Some other Free Software Foundation software

is covered by
the GNU Library General Public License instead.) You can

apply it to
your programs, too.

When we speak of free software, we are referring to

freedom, not

price. Our General Public Licenses are designed to make

sure that you
have the freedom to distribute copies of free software

(and charge for
this service if you wish), 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 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 show them these terms so they

know their
rights.

We protect your rights with two steps: (1) copyright the

software, and

(2) offer you this license which gives you legal permis

sion 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.

Finally, any free program is threatened constantly by

software

patents. We wish to avoid the danger that redistributors

of a free
program will individually obtain patent licenses, in ef

fect making the
program proprietary. To prevent this, we have made it

clear that any
patent must be licensed for everyone's free use or not li

censed at all.

The precise terms and conditions for copying, distribu

tion and

modification follow.

TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND

MODIFICATION

0. This License 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 Li

cense. The "Program", below, refers to any such program or work,

and a "work based on the Program" means either the Program or any

derivative work under copyright law: that is to say, a work con

taining the Program or a portion of it, either verbatim or with

modifications and/or translated into another language. (Here

inafter, translation is included without limitation in the term

"modification".) Each licensee is addressed as "you".

Activities other than copying, distribution and modi

fication are not covered by this License; they are outside its

scope. The act of running the Program is not restricted, and the

output from the Program is covered only if its contents consti

tute a work based on the Program (independent of having been made

by running the Program). Whether that is true depends on what

the Program does.

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 in

tact all the notices that refer to this License and to the ab

sence of any warranty; and give any other recipients of the Pro

gram a copy of this License along with the Program.

You may charge a fee for the physical act of transfer

ring a copy, and you may at your option offer warranty protection

in exchange for a fee.

2. You may modify your copy or copies of the Program or

any portion of it, thus forming a work based on the Program, and

copy and distribute such modifications or work under the terms of

Section 1 above, provided that you also meet all of these condi

tions:

a. You must cause the modified files to carry promi

nent notices stating that you changed the files and the date of

any change.

b. You must cause any work that you distribute or

publish, that in whole or in part contains or is derived from the

Program or any part thereof, to be licensed as a whole at no

charge to all third parties under the terms of this License.

c. If the modified program normally reads commands

interactively when run, you must cause it, when started running

for such interactive use in the most ordinary 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 License. (Exception: if the Program itself is interac

tive but does not normally print such an announcement, your work

based on the Program is not required to print an announcement.)

These requirements apply to the modified work as a

whole. If identifiable sections of that work are not derived

from the Program, and can be reasonably considered independent

and separate works in themselves, then this License, and its

terms, do not apply to those sections when you distribute them as

separate works. But when you distribute the same sections as

part of a whole which is a work based on the Program, the distri

bution of the whole must be on the terms of this License, whose

permissions for other licensees extend to the entire whole, and

thus to each and every part regardless of who wrote it.

Thus, it is not the intent of this section to claim

rights or contest your rights to work written entirely by you;

rather, the intent is to exercise the right to control the dis

tribution of derivative or collective works based on the Program.

In addition, mere aggregation of another work not

based on the Program with the Program (or with a work based on

the Program) on a volume of a storage or distribution medium does

not bring the other work under the scope of this License.

3. You may copy and distribute the Program (or a work

based on it, under Section 2) in object code or executable form

under the terms of Sections 1 and 2 above provided that you also

do one of the following:

a. Accompany it with the complete corresponding ma

chine-readable source code, which must be distributed under the

terms of Sections 1 and 2 above on a medium customarily used for

software interchange; or,

b. Accompany it with a written offer, valid for at

least three years, to give any third party, for a charge no more

than your cost of physically performing source distribution, a

complete machine-readable copy of the corresponding source code,

to be distributed under the terms of Sections 1 and 2 above on a

medium customarily used for software interchange; or,

c. Accompany it with the information you received as

to the offer to distribute corresponding source code. (This al

ternative is allowed only for noncommercial distribution and only

if you received the program in object code or executable form

with such an offer, in accord with Subsection b above.)

The source code for a work means the preferred form of

the work for making modifications to it. For an executable work,

complete source code means all the source code for all modules it

contains, plus any associated interface definition files, plus

the scripts used to control compilation and installation of the

executable. However, as a special exception, the source code

distributed need not include anything that is normally distribut

ed (in either source or binary form) with the major components

(compiler, kernel, and so on) of the operating system on which

the executable runs, unless that component itself accompanies the

executable.

If distribution of executable or object code is made

by offering access to copy from a designated place, then offering

equivalent access to copy the source code from the same place

counts as distribution of the source code, even though third par

ties are not compelled to copy the source along with the object

code.

4. You may not copy, modify, sublicense, or distribute

the Program except as expressly provided under this License. Any

attempt otherwise to copy, modify, sublicense or distribute the

Program is void, and will automatically terminate your rights un

der this License. However, parties who have received copies, or

rights, from you under this License will not have their licenses

terminated so long as such parties remain in full compliance.

5. You are not required to accept this License, since you

have not signed it. However, nothing else grants you permission

to modify or distribute the Program or its derivative works.

These actions are prohibited by law if you do not accept this Li

cense. Therefore, by modifying or distributing 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 for copy

ing, distributing or modifying the Program or works based on it.

6. Each time you redistribute the Program (or any work

based on the Program), the recipient automatically receives a li

cense 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. You are not responsible for enforcing

compliance by third parties to this License.

7. If, as a consequence of a court judgment or allegation

of patent infringement or for any other reason (not limited to

patent issues), conditions are imposed on you (whether by court

order, agreement or otherwise) that contradict the conditions of

this License, they do not excuse you from the conditions of this

License. If you cannot distribute so as to satisfy simultaneous

ly your obligations under this License and any other pertinent

obligations, then as a consequence you may not distribute the

Program at all. For example, if a patent license would not per

mit royalty-free redistribution of the Program by all those who

receive copies directly or indirectly through you, then the only

way you could satisfy both it and this License would be to re

frain entirely from distribution of the Program.

If any portion of this section is held invalid or un

enforceable under any particular circumstance, the balance of the

section is intended to apply and the section as a whole is in

tended to apply in other circumstances.

It is not the purpose of this section to induce you to

infringe any patents or other property right claims or to contest

validity of any such claims; this section has the sole purpose of

protecting the integrity of the free software distribution sys

tem, which is implemented by public license practices. Many peo

ple have made generous contributions to the wide range of soft

ware distributed through that system in reliance on consistent

application of that system; it is up to the author/donor to de

cide if he or she is willing to distribute software through any

other system and a licensee cannot impose that choice.

This section is intended to make thoroughly clear what

is believed to be a consequence of the rest of this License.

8. If the distribution and/or use of the Program is re

stricted in certain countries either by patents or by copyrighted

interfaces, the original copyright holder who places the Program

under this License may add an explicit geographical distribution

limitation excluding those countries, so that distribution is

permitted only in or among countries not thus excluded. In such

case, this License incorporates the limitation as if written in

the body of this License.

9. 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 con

cerns.

Each version is given a distinguishing version number.

If the Program specifies a version number of this 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 this License,

you may choose any version ever published by the Free Software

Foundation.

10. 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

11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE

IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLI

CABLE 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.

12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR

AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PAR

TY WHO MAY MODIFY AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED

ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPE

CIAL, 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 SUS

TAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OP

ERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PAR

TY 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 the public, 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 no

tice is found.

<one line to give the program's name and a brief

idea of what it does.>
Copyright (C) <year> <name of author>

This program is free software; you can redis

tribute it and/or modify
it under the terms of the GNU General Public Li

cense as published by
the Free Software Foundation; either version 2 of

the License, 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 PUR

POSE. 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., 51 Franklin Street, Fifth Floor,

Boston, MA 02110-1301, USA

Also add information on how to contact you by electronic

and paper mail.

If the program is interactive, make it output a short no

tice like this when it starts in an interactive mode:

Gnomovision version 69, Copyright (C) <year> <name

of author>
Gnomovision comes with ABSOLUTELY NO WARRANTY; for

details
type `show w'.
This is free software, and you are welcome to re

distribute it
under certain conditions; type `show c' for de

tails.

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---what

ever suits your program.

You should also get your employer (if you work as a pro

grammer) or your school, if any, to sign a "copyright disclaimer"

for the program, if necessary. Here is a sample; alter the

names:

Yoyodyne, Inc., hereby disclaims all copyright in

terest in the program
`Gnomovision' (which makes passes at compilers)

written by James Hacker.

<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice

This General Public License does not permit incorporating

your program into proprietary programs. If your program is a

subroutine library, you may consider it more useful to permit

linking proprietary applications with the library. If this is

what you want to do, use the GNU Library General Public License

instead of this License.

SEE ALSO

gfdl(7), fsf-funding(7).

COPYRIGHT

Copyright (c) 1989, 1991 Free Software Foundation, Inc.

51 Franklin Street, 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.

gcc-4.1.1 2006-05-24

GPL(7)