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407 lines
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407 lines
19 KiB
The GNU General Public License (GPL) Version 2, June 1991
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Copyright (C) 1989, 1991 Free Software Foundation, Inc.
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59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Everyone is permitted to copy and distribute verbatim copies
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of this license document, but changing it is not allowed.
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Preamble
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The licenses for most software are designed to take away
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your freedom to share and change it. By contrast, the GNU
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General Public License is intended to guarantee your freedom
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to share and change free software--to make sure the software
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is free for all its users. This General Public License
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applies to most of the Free Software Foundation's software
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and to any other program whose authors commit to using it.
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(Some other Free Software Foundation software is covered by
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the GNU Library General Public License instead.) You can
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apply it to your programs, too. When we speak of free
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software, we are referring to freedom, not price. Our
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General Public Licenses are designed to make sure that you
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have the freedom to distribute copies of free software (and
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charge for this service if you wish), that you receive
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source code or can get it if you want it, that you can
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change the software or use pieces of it in new free
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programs; and that you know you can do these things. To
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protect your rights, we need to make restrictions that
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forbid anyone to deny you these rights or to ask you to
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surrender the rights. These restrictions translate to
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certain responsibilities for you if you distribute copies of
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the software, or if you modify it.
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For example, if you distribute copies of such a program,
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whether gratis or for a fee, you must give the recipients
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all the rights that you have. You must make sure that they,
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too, receive or can get the source code. And you must show
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them these terms so they know their rights.
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We protect your rights with two steps: (1) copyright the
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software, and (2) offer you this license which gives you
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legal permission to copy, distribute and/or modify the
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software.
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Also, for each author's protection and ours, we want to make
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certain that everyone understands that there is no warranty
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for this free software. If the software is modified by
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someone else and passed on, we want its recipients to know
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that what they have is not the original, so that any
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problems introduced by others will not reflect on the
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original authors' reputations.
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Finally, any free program is threatened constantly by
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software patents. We wish to avoid the danger that
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redistributors of a free program will individually obtain
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patent licenses, in effect making the program proprietary.
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To prevent this, we have made it clear that any patent must
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be licensed for everyone's free use or not licensed at all.
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The precise terms and conditions for copying, distribution
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and modification follow.
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TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND
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MODIFICATION
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0. This License applies to any program or other work which
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contains a notice placed by the copyright holder saying it
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may be distributed under the terms of this General Public
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License. The "Program", below, refers to any such program or
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work, and a "work based on the Program" means either the
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Program or any derivative work under copyright law: that is
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to say, a work containing the Program or a portion of it,
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either verbatim or with modifications and/or translated into
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another language. (Hereinafter, translation is included
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without limitation in the term "modification".) Each
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licensee is addressed as "you".
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Activities other than copying, distribution and modification
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are not covered by this License; they are outside its scope.
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The act of running the Program is not restricted, and the
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output from the Program is covered only if its contents
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constitute a work based on the Program (independent of
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having been made by running the Program). Whether that is
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true depends on what the Program does.
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1. You may copy and distribute verbatim copies of the
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Program's source code as you receive it, in any medium,
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provided that you conspicuously and appropriately publish on
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each copy an appropriate copyright notice and disclaimer of
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warranty; keep intact all the notices that refer to this
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License and to the absence of any warranty; and give any
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other recipients of the Program a copy of this License along
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with the Program.
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You may charge a fee for the physical act of transferring a
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copy, and you may at your option offer warranty protection
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in exchange for a fee.
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2. You may modify your copy or copies of the Program or any
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portion of it, thus forming a work based on the Program, and
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copy and distribute such modifications or work under the
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terms of Section 1 above, provided that you also meet all of
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these conditions:
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a) You must cause the modified files to carry prominent
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notices stating that you changed the files and the date of
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any change.
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b) You must cause any work that you distribute or publish,
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that in whole or in part contains or is derived from the
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Program or any part thereof, to be licensed as a whole at no
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charge to all third parties under the terms of this License.
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c) If the modified program normally reads commands
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interactively when run, you must cause it, when started
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running for such interactive use in the most ordinary way,
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to print or display an announcement including an appropriate
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copyright notice and a notice that there is no warranty (or
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else, saying that you provide a warranty) and that users may
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redistribute the program under these conditions, and telling
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the user how to view a copy of this License. (Exception: if
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the Program itself is interactive but does not normally
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print such an announcement, your work based on the Program
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is not required to print an announcement.)
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These requirements apply to the modified work as a whole. If
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identifiable sections of that work are not derived from the
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Program, and can be reasonably considered independent and
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separate works in themselves, then this License, and its
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terms, do not apply to those sections when you distribute
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them as separate works. But when you distribute the same
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sections as part of a whole which is a work based on the
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Program, the distribution of the whole must be on the terms
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of this License, whose permissions for other licensees
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extend to the entire whole, and thus to each and every part
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regardless of who wrote it.
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Thus, it is not the intent of this section to claim rights
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or contest your rights to work written entirely by you;
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rather, the intent is to exercise the right to control the
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distribution of derivative or collective works based on the
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Program. In addition, mere aggregation of another work not
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based on the Program with the Program (or with a work based
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on the Program) on a volume of a storage or distribution
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medium does not bring the other work under the scope of this
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License.
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3. You may copy and distribute the Program (or a work based
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on it, under Section 2) in object code or executable form
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under the terms of Sections 1 and 2 above provided that you
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also do one of the following:
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a) Accompany it with the complete corresponding
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machine-readable source code, which must be distributed
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under the terms of Sections 1 and 2 above on a medium
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customarily used for software interchange; or,
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b) Accompany it with a written offer, valid for at least
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three years, to give any third party, for a charge no more
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than your cost of physically performing source distribution,
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a complete machine-readable copy of the corresponding source
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code, to be distributed under the terms of Sections 1 and 2
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above on a medium customarily used for software interchange;
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or,
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c) Accompany it with the information you received as to the
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offer to distribute corresponding source code. (This
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alternative is allowed only for noncommercial distribution
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and only if you received the program in object code or
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executable form with such an offer, in accord with
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Subsection b above.)
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The source code for a work means the preferred form of the
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work for making modifications to it. For an executable work,
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complete source code means all the source code for all
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modules it contains, plus any associated interface
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definition files, plus the scripts used to control
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compilation and installation of the executable. However, as
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a special exception, the source code distributed need not
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include anything that is normally distributed (in either
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source or binary form) with the major components (compiler,
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kernel, and so on) of the operating system on which the
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executable runs, unless that component itself accompanies
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the executable. If distribution of executable or object code
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is made by offering access to copy from a designated place,
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then offering equivalent access to copy the source code from
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the same place counts as distribution of the source code,
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even though third parties are not compelled to copy the
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source along with the object code.
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4. You may not copy, modify, sublicense, or distribute the
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Program except as expressly provided under this License. Any
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attempt otherwise to copy, modify, sublicense or distribute
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the Program is void, and will automatically terminate your
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rights under this License. However, parties who have
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received copies, or rights, from you under this License will
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not have their licenses terminated so long as such parties
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remain in full compliance.
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5. You are not required to accept this License, since you
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have not signed it. However, nothing else grants you
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permission to modify or distribute the Program or its
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derivative works. These actions are prohibited by law if you
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do not accept this License. Therefore, by modifying or
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distributing the Program (or any work based on the Program),
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you indicate your acceptance of this License to do so, and
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all its terms and conditions for copying, distributing or
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modifying the Program or works based on it.
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6. Each time you redistribute the Program (or any work based
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on the Program), the recipient automatically receives a
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license from the original licensor to copy, distribute or
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modify the Program subject to these terms and conditions.
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You may not impose any further restrictions on the
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recipients' exercise of the rights granted herein. You are
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not responsible for enforcing compliance by third parties to
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this License.
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7. If, as a consequence of a court judgment or allegation of
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patent infringement or for any other reason (not limited to
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patent issues), conditions are imposed on you (whether by
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court order, agreement or otherwise) that contradict the
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conditions of this License, they do not excuse you from the
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conditions of this License. If you cannot distribute so as
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to satisfy simultaneously your obligations under this
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License and any other pertinent obligations, then as a
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consequence you may not distribute the Program at all. For
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example, if a patent license would not permit royalty-free
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redistribution of the Program by all those who receive
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copies directly or indirectly through you, then the only way
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you could satisfy both it and this License would be to
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refrain entirely from distribution of the Program.
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If any portion of this section is held invalid or
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unenforceable under any particular circumstance, the balance
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of the section is intended to apply and the section as a
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whole is intended to apply in other circumstances. It is not
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the purpose of this section to induce you to infringe any
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patents or other property right claims or to contest
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validity of any such claims; this section has the sole
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purpose of protecting the integrity of the free software
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distribution system, which is implemented by public license
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practices. Many people have made generous contributions to
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the wide range of software distributed through that system
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in reliance on consistent application of that system; it is
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up to the author/donor to decide if he or she is willing to
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distribute software through any other system and a licensee
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cannot impose that choice.
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This section is intended to make thoroughly clear what is
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believed to be a consequence of the rest of this License.
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8. If the distribution and/or use of the Program is
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restricted in certain countries either by patents or by
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copyrighted interfaces, the original copyright holder who
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places the Program under this License may add an explicit
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geographical distribution limitation excluding those
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countries, so that distribution is permitted only in or
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among countries not thus excluded. In such case, this
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License incorporates the limitation as if written in the
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body of this License.
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9. The Free Software Foundation may publish revised and/or
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new versions of the General Public License from time to
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time. Such new versions will be similar in spirit to the
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present version, but may differ in detail to address new
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problems or concerns.
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Each version is given a distinguishing version number. If
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the Program specifies a version number of this License which
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applies to it and "any later version", you have the option
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of following the terms and conditions either of that version
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or of any later version published by the Free Software
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Foundation. If the Program does not specify a version number
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of this License, you may choose any version ever published
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by the Free Software Foundation.
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10. If you wish to incorporate parts of the Program into
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other free programs whose distribution conditions are
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different, write to the author to ask for permission. For
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software which is copyrighted by the Free Software
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Foundation, write to the Free Software Foundation; we
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sometimes make exceptions for this. Our decision will be
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guided by the two goals of preserving the free status of all
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derivatives of our free software and of promoting the
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sharing and reuse of software generally.
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NO WARRANTY
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11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS
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NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
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APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE
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COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM
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"AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR
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IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE
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OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
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DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
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REPAIR OR CORRECTION.
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12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED
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TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY
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WHO MAY MODIFY AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED
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ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL,
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SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF
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THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT
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LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR
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LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE
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PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH
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HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
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SUCH DAMAGES.
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END OF TERMS AND CONDITIONS
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How to Apply These Terms to Your New Programs
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If you develop a new program, and you want it to be of the
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greatest possible use to the public, the best way to achieve
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this is to make it free software which everyone can
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redistribute and change under these terms.
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To do so, attach the following notices to the program. It is
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safest to attach them to the start of each source file to
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most effectively convey the exclusion of warranty; and each
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file should have at least the "copyright" line and a pointer
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to where the full notice is found.
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One line to give the program's name and a brief idea of what
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it does.
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Copyright (C) <year> <name of author>
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This program is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later
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version. This program is distributed in the hope that it
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will be useful, but WITHOUT ANY WARRANTY; without even the
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implied warranty of MERCHANTABILITY or FITNESS FOR A
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PARTICULAR PURPOSE. See the GNU General Public License for
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more details. You should have received a copy of the GNU
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General Public License along with this program; if not,
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write to the Free Software Foundation, Inc., 59 Temple
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Place, Suite 330, Boston, MA 02111-1307 USA
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Also add information on how to contact you by electronic and
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paper mail. If the program is interactive, make it output a
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short notice like this when it starts in an interactive
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mode:
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Gnomovision version 69, Copyright (C) year name of author
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Gnomovision comes with ABSOLUTELY NO WARRANTY; for details
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type `show w'. This is free software, and you are welcome to
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redistribute it under certain conditions; type `show c' for
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details. The hypothetical commands `show w' and `show c'
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should show the appropriate parts of the General Public
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License. Of course, the commands you use may be called
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something other than `show w' and `show c'; they could even
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be mouse-clicks or menu items--whatever suits your program.
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You should also get your employer (if you work as a
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programmer) or your school, if any, to sign a "copyright
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disclaimer" for the program, if necessary. Here is a sample;
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alter the names:
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Yoyodyne, Inc., hereby disclaims all copyright interest in
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the program `Gnomovision' (which makes passes at compilers)
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written by James Hacker.
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signature of Ty Coon, 1 April 1989
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Ty Coon, President of Vice
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This General Public License does not permit incorporating
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your program into proprietary programs. If your program is a
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subroutine library, you may consider it more useful to
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permit linking proprietary applications with the library. If
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this is what you want to do, use the GNU Library General
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Public License instead of this License.
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"CLASSPATH" EXCEPTION TO THE GPL VERSION 2
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Certain source files distributed by Sun Microsystems, Inc.
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are subject to the following clarification and special
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exception to the GPL Version 2, but only where Sun has
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expressly included in the particular source file's header
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the words "Sun designates this particular file as subject
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to the "Classpath" exception as provided by Sun in the
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License file that accompanied this code."
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Linking this library statically or dynamically with other
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modules is making a combined work based on this library.
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Thus, the terms and conditions of the GNU General Public
|
|
License Version 2 cover the whole combination.
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As a special exception, the copyright holders of this
|
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library give you permission to link this library with
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independent modules to produce an executable, regardless of
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the license terms of these independent modules, and to copy
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and distribute the resulting executable under terms of your
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choice, provided that you also meet, for each linked
|
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independent module, the terms and conditions of the license
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of that module. An independent module is a module which is
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not derived from or based on this library. If you modify
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this library, you may extend this exception to your version
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of the library, but you are not obligated to do so. If you
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do not wish to do so, delete this exception statement from
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your version. |