cannam@85: GNU GENERAL PUBLIC LICENSE cannam@85: Version 2, June 1991 cannam@85: cannam@85: Copyright (C) 1989, 1991 Free Software Foundation, Inc. cannam@85: 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA cannam@85: Everyone is permitted to copy and distribute verbatim copies cannam@85: of this license document, but changing it is not allowed. cannam@85: cannam@85: Preamble cannam@85: cannam@85: The licenses for most software are designed to take away your cannam@85: freedom to share and change it. By contrast, the GNU General Public cannam@85: License is intended to guarantee your freedom to share and change free cannam@85: software--to make sure the software is free for all its users. This cannam@85: General Public License applies to most of the Free Software cannam@85: Foundation's software and to any other program whose authors commit to cannam@85: using it. (Some other Free Software Foundation software is covered by cannam@85: the GNU Library General Public License instead.) You can apply it to cannam@85: your programs, too. cannam@85: cannam@85: When we speak of free software, we are referring to freedom, not cannam@85: price. Our General Public Licenses are designed to make sure that you cannam@85: have the freedom to distribute copies of free software (and charge for cannam@85: this service if you wish), that you receive source code or can get it cannam@85: if you want it, that you can change the software or use pieces of it cannam@85: in new free programs; and that you know you can do these things. cannam@85: cannam@85: To protect your rights, we need to make restrictions that forbid cannam@85: anyone to deny you these rights or to ask you to surrender the rights. cannam@85: These restrictions translate to certain responsibilities for you if you cannam@85: distribute copies of the software, or if you modify it. cannam@85: cannam@85: For example, if you distribute copies of such a program, whether cannam@85: gratis or for a fee, you must give the recipients all the rights that cannam@85: you have. You must make sure that they, too, receive or can get the cannam@85: source code. And you must show them these terms so they know their cannam@85: rights. cannam@85: cannam@85: We protect your rights with two steps: (1) copyright the software, and cannam@85: (2) offer you this license which gives you legal permission to copy, cannam@85: distribute and/or modify the software. cannam@85: cannam@85: Also, for each author's protection and ours, we want to make certain cannam@85: that everyone understands that there is no warranty for this free cannam@85: software. If the software is modified by someone else and passed on, we cannam@85: want its recipients to know that what they have is not the original, so cannam@85: that any problems introduced by others will not reflect on the original cannam@85: authors' reputations. cannam@85: cannam@85: Finally, any free program is threatened constantly by software cannam@85: patents. We wish to avoid the danger that redistributors of a free cannam@85: program will individually obtain patent licenses, in effect making the cannam@85: program proprietary. To prevent this, we have made it clear that any cannam@85: patent must be licensed for everyone's free use or not licensed at all. cannam@85: cannam@85: The precise terms and conditions for copying, distribution and cannam@85: modification follow. cannam@85: cannam@85: GNU GENERAL PUBLIC LICENSE cannam@85: TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION cannam@85: cannam@85: 0. This License applies to any program or other work which contains cannam@85: a notice placed by the copyright holder saying it may be distributed cannam@85: under the terms of this General Public License. The "Program", below, cannam@85: refers to any such program or work, and a "work based on the Program" cannam@85: means either the Program or any derivative work under copyright law: cannam@85: that is to say, a work containing the Program or a portion of it, cannam@85: either verbatim or with modifications and/or translated into another cannam@85: language. (Hereinafter, translation is included without limitation in cannam@85: the term "modification".) Each licensee is addressed as "you". cannam@85: cannam@85: Activities other than copying, distribution and modification are not cannam@85: covered by this License; they are outside its scope. The act of cannam@85: running the Program is not restricted, and the output from the Program cannam@85: is covered only if its contents constitute a work based on the cannam@85: Program (independent of having been made by running the Program). cannam@85: Whether that is true depends on what the Program does. cannam@85: cannam@85: 1. You may copy and distribute verbatim copies of the Program's cannam@85: source code as you receive it, in any medium, provided that you cannam@85: conspicuously and appropriately publish on each copy an appropriate cannam@85: copyright notice and disclaimer of warranty; keep intact all the cannam@85: notices that refer to this License and to the absence of any warranty; cannam@85: and give any other recipients of the Program a copy of this License cannam@85: along with the Program. cannam@85: cannam@85: You may charge a fee for the physical act of transferring a copy, and cannam@85: you may at your option offer warranty protection in exchange for a fee. cannam@85: cannam@85: 2. You may modify your copy or copies of the Program or any portion cannam@85: of it, thus forming a work based on the Program, and copy and cannam@85: distribute such modifications or work under the terms of Section 1 cannam@85: above, provided that you also meet all of these conditions: cannam@85: cannam@85: a) You must cause the modified files to carry prominent notices cannam@85: stating that you changed the files and the date of any change. cannam@85: cannam@85: b) You must cause any work that you distribute or publish, that in cannam@85: whole or in part contains or is derived from the Program or any cannam@85: part thereof, to be licensed as a whole at no charge to all third cannam@85: parties under the terms of this License. cannam@85: cannam@85: c) If the modified program normally reads commands interactively cannam@85: when run, you must cause it, when started running for such cannam@85: interactive use in the most ordinary way, to print or display an cannam@85: announcement including an appropriate copyright notice and a cannam@85: notice that there is no warranty (or else, saying that you provide cannam@85: a warranty) and that users may redistribute the program under cannam@85: these conditions, and telling the user how to view a copy of this cannam@85: License. (Exception: if the Program itself is interactive but cannam@85: does not normally print such an announcement, your work based on cannam@85: the Program is not required to print an announcement.) cannam@85: cannam@85: These requirements apply to the modified work as a whole. If cannam@85: identifiable sections of that work are not derived from the Program, cannam@85: and can be reasonably considered independent and separate works in cannam@85: themselves, then this License, and its terms, do not apply to those cannam@85: sections when you distribute them as separate works. But when you cannam@85: distribute the same sections as part of a whole which is a work based cannam@85: on the Program, the distribution of the whole must be on the terms of cannam@85: this License, whose permissions for other licensees extend to the cannam@85: entire whole, and thus to each and every part regardless of who wrote it. cannam@85: cannam@85: Thus, it is not the intent of this section to claim rights or contest cannam@85: your rights to work written entirely by you; rather, the intent is to cannam@85: exercise the right to control the distribution of derivative or cannam@85: collective works based on the Program. cannam@85: cannam@85: In addition, mere aggregation of another work not based on the Program cannam@85: with the Program (or with a work based on the Program) on a volume of cannam@85: a storage or distribution medium does not bring the other work under cannam@85: the scope of this License. cannam@85: cannam@85: 3. You may copy and distribute the Program (or a work based on it, cannam@85: under Section 2) in object code or executable form under the terms of cannam@85: Sections 1 and 2 above provided that you also do one of the following: cannam@85: cannam@85: a) Accompany it with the complete corresponding machine-readable cannam@85: source code, which must be distributed under the terms of Sections cannam@85: 1 and 2 above on a medium customarily used for software interchange; or, cannam@85: cannam@85: b) Accompany it with a written offer, valid for at least three cannam@85: years, to give any third party, for a charge no more than your cannam@85: cost of physically performing source distribution, a complete cannam@85: machine-readable copy of the corresponding source code, to be cannam@85: distributed under the terms of Sections 1 and 2 above on a medium cannam@85: customarily used for software interchange; or, cannam@85: cannam@85: c) Accompany it with the information you received as to the offer cannam@85: to distribute corresponding source code. (This alternative is cannam@85: allowed only for noncommercial distribution and only if you cannam@85: received the program in object code or executable form with such cannam@85: an offer, in accord with Subsection b above.) cannam@85: cannam@85: The source code for a work means the preferred form of the work for cannam@85: making modifications to it. For an executable work, complete source cannam@85: code means all the source code for all modules it contains, plus any cannam@85: associated interface definition files, plus the scripts used to cannam@85: control compilation and installation of the executable. However, as a cannam@85: special exception, the source code distributed need not include cannam@85: anything that is normally distributed (in either source or binary cannam@85: form) with the major components (compiler, kernel, and so on) of the cannam@85: operating system on which the executable runs, unless that component cannam@85: itself accompanies the executable. cannam@85: cannam@85: If distribution of executable or object code is made by offering cannam@85: access to copy from a designated place, then offering equivalent cannam@85: access to copy the source code from the same place counts as cannam@85: distribution of the source code, even though third parties are not cannam@85: compelled to copy the source along with the object code. cannam@85: cannam@85: 4. You may not copy, modify, sublicense, or distribute the Program cannam@85: except as expressly provided under this License. Any attempt cannam@85: otherwise to copy, modify, sublicense or distribute the Program is cannam@85: void, and will automatically terminate your rights under this License. cannam@85: However, parties who have received copies, or rights, from you under cannam@85: this License will not have their licenses terminated so long as such cannam@85: parties remain in full compliance. cannam@85: cannam@85: 5. You are not required to accept this License, since you have not cannam@85: signed it. However, nothing else grants you permission to modify or cannam@85: distribute the Program or its derivative works. These actions are cannam@85: prohibited by law if you do not accept this License. Therefore, by cannam@85: modifying or distributing the Program (or any work based on the cannam@85: Program), you indicate your acceptance of this License to do so, and cannam@85: all its terms and conditions for copying, distributing or modifying cannam@85: the Program or works based on it. cannam@85: cannam@85: 6. Each time you redistribute the Program (or any work based on the cannam@85: Program), the recipient automatically receives a license from the cannam@85: original licensor to copy, distribute or modify the Program subject to cannam@85: these terms and conditions. You may not impose any further cannam@85: restrictions on the recipients' exercise of the rights granted herein. cannam@85: You are not responsible for enforcing compliance by third parties to cannam@85: this License. cannam@85: cannam@85: 7. If, as a consequence of a court judgment or allegation of patent cannam@85: infringement or for any other reason (not limited to patent issues), cannam@85: conditions are imposed on you (whether by court order, agreement or cannam@85: otherwise) that contradict the conditions of this License, they do not cannam@85: excuse you from the conditions of this License. If you cannot cannam@85: distribute so as to satisfy simultaneously your obligations under this cannam@85: License and any other pertinent obligations, then as a consequence you cannam@85: may not distribute the Program at all. For example, if a patent cannam@85: license would not permit royalty-free redistribution of the Program by cannam@85: all those who receive copies directly or indirectly through you, then cannam@85: the only way you could satisfy both it and this License would be to cannam@85: refrain entirely from distribution of the Program. cannam@85: cannam@85: If any portion of this section is held invalid or unenforceable under cannam@85: any particular circumstance, the balance of the section is intended to cannam@85: apply and the section as a whole is intended to apply in other cannam@85: circumstances. cannam@85: cannam@85: It is not the purpose of this section to induce you to infringe any cannam@85: patents or other property right claims or to contest validity of any cannam@85: such claims; this section has the sole purpose of protecting the cannam@85: integrity of the free software distribution system, which is cannam@85: implemented by public license practices. Many people have made cannam@85: generous contributions to the wide range of software distributed cannam@85: through that system in reliance on consistent application of that cannam@85: system; it is up to the author/donor to decide if he or she is willing cannam@85: to distribute software through any other system and a licensee cannot cannam@85: impose that choice. cannam@85: cannam@85: This section is intended to make thoroughly clear what is believed to cannam@85: be a consequence of the rest of this License. cannam@85: cannam@85: 8. If the distribution and/or use of the Program is restricted in cannam@85: certain countries either by patents or by copyrighted interfaces, the cannam@85: original copyright holder who places the Program under this License cannam@85: may add an explicit geographical distribution limitation excluding cannam@85: those countries, so that distribution is permitted only in or among cannam@85: countries not thus excluded. In such case, this License incorporates cannam@85: the limitation as if written in the body of this License. cannam@85: cannam@85: 9. The Free Software Foundation may publish revised and/or new versions cannam@85: of the General Public License from time to time. Such new versions will cannam@85: be similar in spirit to the present version, but may differ in detail to cannam@85: address new problems or concerns. cannam@85: cannam@85: Each version is given a distinguishing version number. If the Program cannam@85: specifies a version number of this License which applies to it and "any cannam@85: later version", you have the option of following the terms and conditions cannam@85: either of that version or of any later version published by the Free cannam@85: Software Foundation. If the Program does not specify a version number of cannam@85: this License, you may choose any version ever published by the Free Software cannam@85: Foundation. cannam@85: cannam@85: 10. If you wish to incorporate parts of the Program into other free cannam@85: programs whose distribution conditions are different, write to the author cannam@85: to ask for permission. For software which is copyrighted by the Free cannam@85: Software Foundation, write to the Free Software Foundation; we sometimes cannam@85: make exceptions for this. Our decision will be guided by the two goals cannam@85: of preserving the free status of all derivatives of our free software and cannam@85: of promoting the sharing and reuse of software generally. cannam@85: cannam@85: NO WARRANTY cannam@85: cannam@85: 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY cannam@85: FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN cannam@85: OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES cannam@85: PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED cannam@85: OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF cannam@85: MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS cannam@85: TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE cannam@85: PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, cannam@85: REPAIR OR CORRECTION. cannam@85: cannam@85: 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING cannam@85: WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR cannam@85: REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, cannam@85: INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING cannam@85: OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED cannam@85: TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY cannam@85: YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER cannam@85: PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE cannam@85: POSSIBILITY OF SUCH DAMAGES. cannam@85: cannam@85: END OF TERMS AND CONDITIONS cannam@85: cannam@85: How to Apply These Terms to Your New Programs cannam@85: cannam@85: If you develop a new program, and you want it to be of the greatest cannam@85: possible use to the public, the best way to achieve this is to make it cannam@85: free software which everyone can redistribute and change under these terms. cannam@85: cannam@85: To do so, attach the following notices to the program. It is safest cannam@85: to attach them to the start of each source file to most effectively cannam@85: convey the exclusion of warranty; and each file should have at least cannam@85: the "copyright" line and a pointer to where the full notice is found. cannam@85: cannam@85: cannam@85: Copyright (C) cannam@85: cannam@85: This program is free software; you can redistribute it and/or modify cannam@85: it under the terms of the GNU General Public License as published by cannam@85: the Free Software Foundation; either version 2 of the License, or cannam@85: (at your option) any later version. cannam@85: cannam@85: This program is distributed in the hope that it will be useful, cannam@85: but WITHOUT ANY WARRANTY; without even the implied warranty of cannam@85: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the cannam@85: GNU General Public License for more details. cannam@85: cannam@85: You should have received a copy of the GNU General Public License cannam@85: along with this program; if not, write to the Free Software cannam@85: Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA cannam@85: cannam@85: cannam@85: Also add information on how to contact you by electronic and paper mail. cannam@85: cannam@85: If the program is interactive, make it output a short notice like this cannam@85: when it starts in an interactive mode: cannam@85: cannam@85: Gnomovision version 69, Copyright (C) year name of author cannam@85: Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. cannam@85: This is free software, and you are welcome to redistribute it cannam@85: under certain conditions; type `show c' for details. cannam@85: cannam@85: The hypothetical commands `show w' and `show c' should show the appropriate cannam@85: parts of the General Public License. Of course, the commands you use may cannam@85: be called something other than `show w' and `show c'; they could even be cannam@85: mouse-clicks or menu items--whatever suits your program. cannam@85: cannam@85: You should also get your employer (if you work as a programmer) or your cannam@85: school, if any, to sign a "copyright disclaimer" for the program, if cannam@85: necessary. Here is a sample; alter the names: cannam@85: cannam@85: Yoyodyne, Inc., hereby disclaims all copyright interest in the program cannam@85: `Gnomovision' (which makes passes at compilers) written by James Hacker. cannam@85: cannam@85: , 1 April 1989 cannam@85: Ty Coon, President of Vice cannam@85: cannam@85: This General Public License does not permit incorporating your program into cannam@85: proprietary programs. If your program is a subroutine library, you may cannam@85: consider it more useful to permit linking proprietary applications with the cannam@85: library. If this is what you want to do, use the GNU Library General cannam@85: Public License instead of this License.