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cc2b665f JH |
1 | |
2 | =head1 NAME | |
3 | ||
fa861958 | 4 | perlgpl - the GNU General Public License, version 1 |
cc2b665f JH |
5 | |
6 | =head1 SYNOPSIS | |
7 | ||
8 | You can refer to this document in Pod via "L<perlgpl>" | |
9 | Or you can see this document by entering "perldoc perlgpl" | |
10 | ||
cc2b665f JH |
11 | =head1 DESCRIPTION |
12 | ||
fa861958 DG |
13 | Perl is free software; you can redistribute it and/or modify |
14 | it under the terms of either: | |
cc2b665f | 15 | |
fa861958 DG |
16 | a) the GNU General Public License as published by the Free |
17 | Software Foundation; either version 1, or (at your option) any | |
18 | later version, or | |
cc2b665f | 19 | |
fa861958 | 20 | b) the "Artistic License" which comes with this Kit. |
cc2b665f | 21 | |
fa861958 DG |
22 | This is the B<"GNU General Public License, version 1">. |
23 | It's here so that modules, programs, etc., that want to declare | |
24 | this as their distribution license can link to it. | |
cc2b665f | 25 | |
fa861958 | 26 | For the Perl Artistic License, see L<perlartistic>. |
cc2b665f | 27 | |
fa861958 | 28 | =cut |
cc2b665f | 29 | |
fa861958 DG |
30 | # Because the following document's language disallows "changing" |
31 | # it, we haven't gone thru and prettied it up with =item's or | |
32 | # anything. It's good enough the way it is. | |
cc2b665f | 33 | |
fa861958 | 34 | =head1 GNU GENERAL PUBLIC LICENSE |
8d9043d1 | 35 | |
fa861958 DG |
36 | GNU GENERAL PUBLIC LICENSE |
37 | Version 1, February 1989 | |
f703fc96 | 38 | |
fa861958 | 39 | Copyright (C) 1989 Free Software Foundation, Inc. |
de89470c | 40 | 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
f703fc96 | 41 | |
fa861958 DG |
42 | Everyone is permitted to copy and distribute verbatim copies |
43 | of this license document, but changing it is not allowed. | |
f703fc96 | 44 | |
fa861958 | 45 | Preamble |
f703fc96 | 46 | |
fa861958 DG |
47 | The license agreements of most software companies try to keep users |
48 | at the mercy of those companies. By contrast, our General Public | |
49 | License is intended to guarantee your freedom to share and change free | |
50 | software--to make sure the software is free for all its users. The | |
51 | General Public License applies to the Free Software Foundation's | |
52 | software and to any other program whose authors commit to using it. | |
53 | You can use it for your programs, too. | |
f703fc96 | 54 | |
fa861958 DG |
55 | When we speak of free software, we are referring to freedom, not |
56 | price. Specifically, the General Public License is designed to make | |
57 | sure that you have the freedom to give away or sell copies of free | |
58 | software, that you receive source code or can get it if you want it, | |
59 | that you can change the software or use pieces of it in new free | |
60 | programs; and that you know you can do these things. | |
f703fc96 | 61 | |
fa861958 DG |
62 | To protect your rights, we need to make restrictions that forbid |
63 | anyone to deny you these rights or to ask you to surrender the rights. | |
64 | These restrictions translate to certain responsibilities for you if you | |
65 | distribute copies of the software, or if you modify it. | |
f703fc96 | 66 | |
fa861958 DG |
67 | For example, if you distribute copies of a such a program, whether |
68 | gratis or for a fee, you must give the recipients all the rights that | |
69 | you have. You must make sure that they, too, receive or can get the | |
70 | source code. And you must tell them their rights. | |
f703fc96 | 71 | |
fa861958 DG |
72 | We protect your rights with two steps: (1) copyright the software, and |
73 | (2) offer you this license which gives you legal permission to copy, | |
74 | distribute and/or modify the software. | |
f703fc96 | 75 | |
fa861958 DG |
76 | Also, for each author's protection and ours, we want to make certain |
77 | that everyone understands that there is no warranty for this free | |
78 | software. If the software is modified by someone else and passed on, we | |
79 | want its recipients to know that what they have is not the original, so | |
80 | that any problems introduced by others will not reflect on the original | |
81 | authors' reputations. | |
f703fc96 | 82 | |
fa861958 DG |
83 | The precise terms and conditions for copying, distribution and |
84 | modification follow. | |
f703fc96 | 85 | |
fa861958 DG |
86 | GNU GENERAL PUBLIC LICENSE |
87 | TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION | |
f703fc96 | 88 | |
fa861958 DG |
89 | 0. This License Agreement applies to any program or other work which |
90 | contains a notice placed by the copyright holder saying it may be | |
91 | distributed under the terms of this General Public License. The | |
92 | "Program", below, refers to any such program or work, and a "work based | |
93 | on the Program" means either the Program or any work containing the | |
94 | Program or a portion of it, either verbatim or with modifications. Each | |
95 | licensee is addressed as "you". | |
f703fc96 | 96 | |
fa861958 DG |
97 | 1. You may copy and distribute verbatim copies of the Program's source |
98 | code as you receive it, in any medium, provided that you conspicuously and | |
99 | appropriately publish on each copy an appropriate copyright notice and | |
100 | disclaimer of warranty; keep intact all the notices that refer to this | |
101 | General Public License and to the absence of any warranty; and give any | |
102 | other recipients of the Program a copy of this General Public License | |
103 | along with the Program. You may charge a fee for the physical act of | |
104 | transferring a copy. | |
f703fc96 | 105 | |
fa861958 DG |
106 | 2. You may modify your copy or copies of the Program or any portion of |
107 | it, and copy and distribute such modifications under the terms of Paragraph | |
108 | 1 above, provided that you also do the following: | |
f703fc96 | 109 | |
fa861958 DG |
110 | a) cause the modified files to carry prominent notices stating that |
111 | you changed the files and the date of any change; and | |
f703fc96 | 112 | |
fa861958 DG |
113 | b) cause the whole of any work that you distribute or publish, that |
114 | in whole or in part contains the Program or any part thereof, either | |
115 | with or without modifications, to be licensed at no charge to all | |
116 | third parties under the terms of this General Public License (except | |
117 | that you may choose to grant warranty protection to some or all | |
118 | third parties, at your option). | |
f703fc96 | 119 | |
fa861958 DG |
120 | c) If the modified program normally reads commands interactively when |
121 | run, you must cause it, when started running for such interactive use | |
122 | in the simplest and most usual way, to print or display an | |
123 | announcement including an appropriate copyright notice and a notice | |
124 | that there is no warranty (or else, saying that you provide a | |
125 | warranty) and that users may redistribute the program under these | |
126 | conditions, and telling the user how to view a copy of this General | |
127 | Public License. | |
f703fc96 | 128 | |
fa861958 DG |
129 | d) You may charge a fee for the physical act of transferring a |
130 | copy, and you may at your option offer warranty protection in | |
131 | exchange for a fee. | |
f703fc96 | 132 | |
fa861958 DG |
133 | Mere aggregation of another independent work with the Program (or its |
134 | derivative) on a volume of a storage or distribution medium does not bring | |
135 | the other work under the scope of these terms. | |
f703fc96 | 136 | |
fa861958 DG |
137 | 3. You may copy and distribute the Program (or a portion or derivative of |
138 | it, under Paragraph 2) in object code or executable form under the terms of | |
139 | Paragraphs 1 and 2 above provided that you also do one of the following: | |
f703fc96 | 140 | |
fa861958 DG |
141 | a) accompany it with the complete corresponding machine-readable |
142 | source code, which must be distributed under the terms of | |
143 | Paragraphs 1 and 2 above; or, | |
f703fc96 | 144 | |
fa861958 DG |
145 | b) accompany it with a written offer, valid for at least three |
146 | years, to give any third party free (except for a nominal charge | |
147 | for the cost of distribution) a complete machine-readable copy of the | |
148 | corresponding source code, to be distributed under the terms of | |
149 | Paragraphs 1 and 2 above; or, | |
f703fc96 | 150 | |
fa861958 DG |
151 | c) accompany it with the information you received as to where the |
152 | corresponding source code may be obtained. (This alternative is | |
153 | allowed only for noncommercial distribution and only if you | |
154 | received the program in object code or executable form alone.) | |
f703fc96 | 155 | |
fa861958 DG |
156 | Source code for a work means the preferred form of the work for making |
157 | modifications to it. For an executable file, complete source code means | |
158 | all the source code for all modules it contains; but, as a special | |
159 | exception, it need not include source code for modules which are standard | |
160 | libraries that accompany the operating system on which the executable | |
161 | file runs, or for standard header files or definitions files that | |
162 | accompany that operating system. | |
f703fc96 | 163 | |
fa861958 DG |
164 | 4. You may not copy, modify, sublicense, distribute or transfer the |
165 | Program except as expressly provided under this General Public License. | |
166 | Any attempt otherwise to copy, modify, sublicense, distribute or transfer | |
167 | the Program is void, and will automatically terminate your rights to use | |
168 | the Program under this License. However, parties who have received | |
169 | copies, or rights to use copies, from you under this General Public | |
170 | License will not have their licenses terminated so long as such parties | |
171 | remain in full compliance. | |
f703fc96 | 172 | |
fa861958 DG |
173 | 5. By copying, distributing or modifying the Program (or any work based |
174 | on the Program) you indicate your acceptance of this license to do so, | |
175 | and all its terms and conditions. | |
f703fc96 | 176 | |
fa861958 DG |
177 | 6. Each time you redistribute the Program (or any work based on the |
178 | Program), the recipient automatically receives a license from the original | |
179 | licensor to copy, distribute or modify the Program subject to these | |
180 | terms and conditions. You may not impose any further restrictions on the | |
181 | recipients' exercise of the rights granted herein. | |
f703fc96 | 182 | |
fa861958 DG |
183 | 7. The Free Software Foundation may publish revised and/or new versions |
184 | of the General Public License from time to time. Such new versions will | |
185 | be similar in spirit to the present version, but may differ in detail to | |
186 | address new problems or concerns. | |
f703fc96 | 187 | |
fa861958 DG |
188 | Each version is given a distinguishing version number. If the Program |
189 | specifies a version number of the license which applies to it and "any | |
190 | later version", you have the option of following the terms and conditions | |
191 | either of that version or of any later version published by the Free | |
192 | Software Foundation. If the Program does not specify a version number of | |
193 | the license, you may choose any version ever published by the Free Software | |
194 | Foundation. | |
f703fc96 | 195 | |
fa861958 DG |
196 | 8. If you wish to incorporate parts of the Program into other free |
197 | programs whose distribution conditions are different, write to the author | |
198 | to ask for permission. For software which is copyrighted by the Free | |
199 | Software Foundation, write to the Free Software Foundation; we sometimes | |
200 | make exceptions for this. Our decision will be guided by the two goals | |
201 | of preserving the free status of all derivatives of our free software and | |
202 | of promoting the sharing and reuse of software generally. | |
f703fc96 | 203 | |
fa861958 | 204 | NO WARRANTY |
f703fc96 | 205 | |
fa861958 DG |
206 | 9. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY |
207 | FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN | |
208 | OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES | |
209 | PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED | |
210 | OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
211 | MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS | |
212 | TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE | |
213 | PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, | |
214 | REPAIR OR CORRECTION. | |
f703fc96 | 215 | |
fa861958 DG |
216 | 10. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING |
217 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR | |
218 | REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, | |
219 | INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING | |
220 | OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED | |
221 | TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY | |
222 | YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER | |
223 | PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE | |
224 | POSSIBILITY OF SUCH DAMAGES. | |
f703fc96 | 225 | |
fa861958 | 226 | END OF TERMS AND CONDITIONS |
f703fc96 | 227 | |
fa861958 | 228 | Appendix: How to Apply These Terms to Your New Programs |
f703fc96 | 229 | |
fa861958 DG |
230 | If you develop a new program, and you want it to be of the greatest |
231 | possible use to humanity, the best way to achieve this is to make it | |
232 | free software which everyone can redistribute and change under these | |
233 | terms. | |
f703fc96 | 234 | |
fa861958 DG |
235 | To do so, attach the following notices to the program. It is safest to |
236 | attach them to the start of each source file to most effectively convey | |
237 | the exclusion of warranty; and each file should have at least the | |
238 | "copyright" line and a pointer to where the full notice is found. | |
f703fc96 | 239 | |
fa861958 DG |
240 | <one line to give the program's name and a brief idea of what it does.> |
241 | Copyright (C) 19yy <name of author> | |
f703fc96 | 242 | |
fa861958 DG |
243 | This program is free software; you can redistribute it and/or modify |
244 | it under the terms of the GNU General Public License as published by | |
245 | the Free Software Foundation; either version 1, or (at your option) | |
246 | any later version. | |
f703fc96 | 247 | |
fa861958 DG |
248 | This program is distributed in the hope that it will be useful, |
249 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
250 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
251 | GNU General Public License for more details. | |
f703fc96 | 252 | |
fa861958 | 253 | You should have received a copy of the GNU General Public License |
de89470c | 254 | along with this program; if not, write to the Free Software |
8b753649 FC |
255 | Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA |
256 | 02110-1301 USA | |
f703fc96 KW |
257 | |
258 | ||
fa861958 | 259 | Also add information on how to contact you by electronic and paper mail. |
f703fc96 | 260 | |
fa861958 DG |
261 | If the program is interactive, make it output a short notice like this |
262 | when it starts in an interactive mode: | |
f703fc96 | 263 | |
fa861958 | 264 | Gnomovision version 69, Copyright (C) 19xx name of author |
ccf3535a | 265 | Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type 'show w'. |
fa861958 | 266 | This is free software, and you are welcome to redistribute it |
ccf3535a | 267 | under certain conditions; type 'show c' for details. |
f703fc96 | 268 | |
ccf3535a | 269 | The hypothetical commands 'show w' and 'show c' should show the |
fa861958 | 270 | appropriate parts of the General Public License. Of course, the |
ccf3535a | 271 | commands you use may be called something other than 'show w' and 'show |
fa861958 DG |
272 | c'; they could even be mouse-clicks or menu items--whatever suits your |
273 | program. | |
f703fc96 | 274 | |
fa861958 DG |
275 | You should also get your employer (if you work as a programmer) or your |
276 | school, if any, to sign a "copyright disclaimer" for the program, if | |
277 | necessary. Here a sample; alter the names: | |
f703fc96 | 278 | |
fa861958 | 279 | Yoyodyne, Inc., hereby disclaims all copyright interest in the |
ccf3535a | 280 | program 'Gnomovision' (a program to direct compilers to make passes |
fa861958 | 281 | at assemblers) written by James Hacker. |
f703fc96 | 282 | |
fa861958 DG |
283 | <signature of Ty Coon>, 1 April 1989 |
284 | Ty Coon, President of Vice | |
f703fc96 | 285 | |
fa861958 | 286 | That's all there is to it! |
2a551100 JH |
287 | |
288 | =cut |