License | 251 lines | 206 code | 45 blank | 0 comment | 0 complexity | 4e7cf92dacd3fb97d3250ec8cdc10cd2 MD5 | raw file
1[I have snipped the snail mail address of the FSF because it has 2changed in the past and is likely to change again. The current 3address should be at http://www.gnu.org/] 4 5 GNU GENERAL PUBLIC LICENSE 6 Version 1, February 1989 7 8 Copyright (C) 1989 Free Software Foundation, Inc. 9 Everyone is permitted to copy and distribute verbatim copies 10 of this license document, but changing it is not allowed. 11 12 Preamble 13 14 The license agreements of most software companies try to keep users 15at the mercy of those companies. By contrast, our General Public 16License is intended to guarantee your freedom to share and change free 17software--to make sure the software is free for all its users. The 18General Public License applies to the Free Software Foundation's 19software and to any other program whose authors commit to using it. 20You can use it for your programs, too. 21 22 When we speak of free software, we are referring to freedom, not 23price. Specifically, the General Public License is designed to make 24sure that you have the freedom to give away or sell copies of free 25software, that you receive source code or can get it if you want it, 26that you can change the software or use pieces of it in new free 27programs; and that you know you can do these things. 28 29 To protect your rights, we need to make restrictions that forbid 30anyone to deny you these rights or to ask you to surrender the rights. 31These restrictions translate to certain responsibilities for you if you 32distribute copies of the software, or if you modify it. 33 34 For example, if you distribute copies of a such a program, whether 35gratis or for a fee, you must give the recipients all the rights that 36you have. You must make sure that they, too, receive or can get the 37source code. And you must tell them their rights. 38 39 We protect your rights with two steps: (1) copyright the software, and 40(2) offer you this license which gives you legal permission to copy, 41distribute and/or modify the software. 42 43 Also, for each author's protection and ours, we want to make certain 44that everyone understands that there is no warranty for this free 45software. If the software is modified by someone else and passed on, we 46want its recipients to know that what they have is not the original, so 47that any problems introduced by others will not reflect on the original 48authors' reputations. 49 50 The precise terms and conditions for copying, distribution and 51modification follow. 52 53 GNU GENERAL PUBLIC LICENSE 54 TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 55 56 0. This License Agreement applies to any program or other work which 57contains a notice placed by the copyright holder saying it may be 58distributed under the terms of this General Public License. The 59"Program", below, refers to any such program or work, and a "work based 60on the Program" means either the Program or any work containing the 61Program or a portion of it, either verbatim or with modifications. Each 62licensee is addressed as "you". 63 64 1. You may copy and distribute verbatim copies of the Program's source 65code as you receive it, in any medium, provided that you conspicuously and 66appropriately publish on each copy an appropriate copyright notice and 67disclaimer of warranty; keep intact all the notices that refer to this 68General Public License and to the absence of any warranty; and give any 69other recipients of the Program a copy of this General Public License 70along with the Program. You may charge a fee for the physical act of 71transferring a copy. 72 73 2. You may modify your copy or copies of the Program or any portion of 74it, and copy and distribute such modifications under the terms of Paragraph 751 above, provided that you also do the following: 76 77 a) cause the modified files to carry prominent notices stating that 78 you changed the files and the date of any change; and 79 80 b) cause the whole of any work that you distribute or publish, that 81 in whole or in part contains the Program or any part thereof, either 82 with or without modifications, to be licensed at no charge to all 83 third parties under the terms of this General Public License (except 84 that you may choose to grant warranty protection to some or all 85 third parties, at your option). 86 87 c) If the modified program normally reads commands interactively when 88 run, you must cause it, when started running for such interactive use 89 in the simplest and most usual way, to print or display an 90 announcement including an appropriate copyright notice and a notice 91 that there is no warranty (or else, saying that you provide a 92 warranty) and that users may redistribute the program under these 93 conditions, and telling the user how to view a copy of this General 94 Public License. 95 96 d) You may charge a fee for the physical act of transferring a 97 copy, and you may at your option offer warranty protection in 98 exchange for a fee. 99 100Mere aggregation of another independent work with the Program (or its 101derivative) on a volume of a storage or distribution medium does not bring 102the other work under the scope of these terms. 103 104 3. You may copy and distribute the Program (or a portion or derivative of 105it, under Paragraph 2) in object code or executable form under the terms of 106Paragraphs 1 and 2 above provided that you also do one of the following: 107 108 a) accompany it with the complete corresponding machine-readable 109 source code, which must be distributed under the terms of 110 Paragraphs 1 and 2 above; or, 111 112 b) accompany it with a written offer, valid for at least three 113 years, to give any third party free (except for a nominal charge 114 for the cost of distribution) a complete machine-readable copy of the 115 corresponding source code, to be distributed under the terms of 116 Paragraphs 1 and 2 above; or, 117 118 c) accompany it with the information you received as to where the 119 corresponding source code may be obtained. (This alternative is 120 allowed only for noncommercial distribution and only if you 121 received the program in object code or executable form alone.) 122 123Source code for a work means the preferred form of the work for making 124modifications to it. For an executable file, complete source code means 125all the source code for all modules it contains; but, as a special 126exception, it need not include source code for modules which are standard 127libraries that accompany the operating system on which the executable 128file runs, or for standard header files or definitions files that 129accompany that operating system. 130 131 4. You may not copy, modify, sublicense, distribute or transfer the 132Program except as expressly provided under this General Public License. 133Any attempt otherwise to copy, modify, sublicense, distribute or transfer 134the Program is void, and will automatically terminate your rights to use 135the Program under this License. However, parties who have received 136copies, or rights to use copies, from you under this General Public 137License will not have their licenses terminated so long as such parties 138remain in full compliance. 139 140 5. By copying, distributing or modifying the Program (or any work based 141on the Program) you indicate your acceptance of this license to do so, 142and all its terms and conditions. 143 144 6. Each time you redistribute the Program (or any work based on the 145Program), the recipient automatically receives a license from the original 146licensor to copy, distribute or modify the Program subject to these 147terms and conditions. You may not impose any further restrictions on the 148recipients' exercise of the rights granted herein. 149 150 7. The Free Software Foundation may publish revised and/or new versions 151of the General Public License from time to time. Such new versions will 152be similar in spirit to the present version, but may differ in detail to 153address new problems or concerns. 154 155Each version is given a distinguishing version number. If the Program 156specifies a version number of the license which applies to it and "any 157later version", you have the option of following the terms and conditions 158either of that version or of any later version published by the Free 159Software Foundation. If the Program does not specify a version number of 160the license, you may choose any version ever published by the Free Software 161Foundation. 162 163 8. If you wish to incorporate parts of the Program into other free 164programs whose distribution conditions are different, write to the author 165to ask for permission. For software which is copyrighted by the Free 166Software Foundation, write to the Free Software Foundation; we sometimes 167make exceptions for this. Our decision will be guided by the two goals 168of preserving the free status of all derivatives of our free software and 169of promoting the sharing and reuse of software generally. 170 171 NO WARRANTY 172 173 9. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY 174FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN 175OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES 176PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED 177OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 178MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS 179TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE 180PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, 181REPAIR OR CORRECTION. 182 183 10. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 184WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR 185REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, 186INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING 187OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED 188TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY 189YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER 190PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE 191POSSIBILITY OF SUCH DAMAGES. 192 193 END OF TERMS AND CONDITIONS 194 195 Appendix: How to Apply These Terms to Your New Programs 196 197 If you develop a new program, and you want it to be of the greatest 198possible use to humanity, the best way to achieve this is to make it 199free software which everyone can redistribute and change under these 200terms. 201 202 To do so, attach the following notices to the program. It is safest to 203attach them to the start of each source file to most effectively convey 204the exclusion of warranty; and each file should have at least the 205"copyright" line and a pointer to where the full notice is found. 206 207 <one line to give the program's name and a brief idea of what it does.> 208 Copyright (C) 19yy <name of author> 209 210 This program is free software; you can redistribute it and/or modify 211 it under the terms of the GNU General Public License as published by 212 the Free Software Foundation; either version 1, or (at your option) 213 any later version. 214 215 This program is distributed in the hope that it will be useful, 216 but WITHOUT ANY WARRANTY; without even the implied warranty of 217 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 218 GNU General Public License for more details. 219 220 You should have received a copy of the GNU General Public License 221 along with this program; if not, write to the Free Software 222 Foundation, Inc. 223 224Also add information on how to contact you by electronic and paper mail. 225 226If the program is interactive, make it output a short notice like this 227when it starts in an interactive mode: 228 229 Gnomovision version 69, Copyright (C) 19xx name of author 230 Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 231 This is free software, and you are welcome to redistribute it 232 under certain conditions; type `show c' for details. 233 234The hypothetical commands `show w' and `show c' should show the 235appropriate parts of the General Public License. Of course, the 236commands you use may be called something other than `show w' and `show 237c'; they could even be mouse-clicks or menu items--whatever suits your 238program. 239 240You should also get your employer (if you work as a programmer) or your 241school, if any, to sign a "copyright disclaimer" for the program, if 242necessary. Here a sample; alter the names: 243 244 Yoyodyne, Inc., hereby disclaims all copyright interest in the 245 program `Gnomovision' (a program to direct compilers to make passes 246 at assemblers) written by James Hacker. 247 248 <signature of Ty Coon>, 1 April 1989 249 Ty Coon, President of Vice 250 251That's all there is to it!