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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. |
f185f654 | 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 | |
f185f654 KW |
72 | We protect your rights with two steps: (1) copyright the software, |
73 | and (2) offer you this license which gives you legal permission to | |
74 | copy, 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 | |
f185f654 KW |
78 | software. If the software is modified by someone else and passed on, |
79 | we want its recipients to know that what they have is not the original, | |
80 | so that any problems introduced by others will not reflect on the | |
81 | original 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 | |
f185f654 KW |
94 | Program or a portion of it, either verbatim or with modifications. |
95 | Each licensee is addressed as "you". | |
96 | ||
97 | 1. You may copy and distribute verbatim copies of the Program's | |
98 | source code as you receive it, in any medium, provided that you | |
99 | conspicuously and appropriately publish on each copy an appropriate | |
100 | copyright notice and disclaimer of warranty; keep intact all the | |
101 | notices that refer to this General Public License and to the absence of | |
102 | any warranty; and give any other recipients of the Program a copy of | |
103 | this General Public License along with the Program. You may charge a | |
104 | fee for the physical act of transferring a copy. | |
105 | ||
106 | 2. You may modify your copy or copies of the Program or any portion | |
107 | of it, and copy and distribute such modifications under the terms of | |
108 | Paragraph 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 | 113 | b) cause the whole of any work that you distribute or publish, that |
f185f654 KW |
114 | in whole or in part contains the Program or any part thereof, |
115 | either with or without modifications, to be licensed at no charge | |
116 | to all third parties under the terms of this General Public License | |
117 | (except that you may choose to grant warranty protection to some or | |
118 | all third parties, at your option). | |
119 | ||
120 | c) If the modified program normally reads commands interactively | |
121 | when run, you must cause it, when started running for such | |
122 | interactive use in the simplest and most usual way, to print or | |
123 | display an announcement including an appropriate copyright notice | |
124 | and a notice that there is no warranty (or else, saying that you | |
125 | provide a warranty) and that users may redistribute the program | |
126 | under these conditions, and telling the user how to view a copy of | |
127 | this General 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 | 133 | Mere aggregation of another independent work with the Program (or its |
f185f654 KW |
134 | derivative) on a volume of a storage or distribution medium does not |
135 | bring the other work under the scope of these terms. | |
f703fc96 | 136 | |
f185f654 KW |
137 | 3. You may copy and distribute the Program (or a portion or |
138 | derivative of it, under Paragraph 2) in object code or executable form | |
139 | under the terms of Paragraphs 1 and 2 above provided that you also do | |
140 | one of the following: | |
f703fc96 | 141 | |
fa861958 DG |
142 | a) accompany it with the complete corresponding machine-readable |
143 | source code, which must be distributed under the terms of | |
144 | Paragraphs 1 and 2 above; or, | |
f703fc96 | 145 | |
fa861958 DG |
146 | b) accompany it with a written offer, valid for at least three |
147 | years, to give any third party free (except for a nominal charge | |
f185f654 KW |
148 | for the cost of distribution) a complete machine-readable copy of |
149 | the corresponding source code, to be distributed under the terms of | |
fa861958 | 150 | Paragraphs 1 and 2 above; or, |
f703fc96 | 151 | |
fa861958 DG |
152 | c) accompany it with the information you received as to where the |
153 | corresponding source code may be obtained. (This alternative is | |
154 | allowed only for noncommercial distribution and only if you | |
155 | received the program in object code or executable form alone.) | |
f703fc96 | 156 | |
fa861958 | 157 | Source code for a work means the preferred form of the work for making |
f185f654 KW |
158 | modifications to it. For an executable file, complete source code |
159 | means all the source code for all modules it contains; but, as a | |
160 | special exception, it need not include source code for modules which | |
161 | are standard libraries that accompany the operating system on which the | |
162 | executable file runs, or for standard header files or definitions files | |
163 | that accompany that operating system. | |
f703fc96 | 164 | |
fa861958 DG |
165 | 4. You may not copy, modify, sublicense, distribute or transfer the |
166 | Program except as expressly provided under this General Public License. | |
f185f654 KW |
167 | Any attempt otherwise to copy, modify, sublicense, distribute or |
168 | transfer the Program is void, and will automatically terminate your | |
169 | rights to use the Program under this License. However, parties who | |
170 | have received copies, or rights to use copies, from you under this | |
171 | General Public License will not have their licenses terminated so long | |
172 | as such parties remain in full compliance. | |
f703fc96 | 173 | |
f185f654 KW |
174 | 5. By copying, distributing or modifying the Program (or any work |
175 | based on the Program) you indicate your acceptance of this license to | |
176 | do so, and all its terms and conditions. | |
f703fc96 | 177 | |
fa861958 | 178 | 6. Each time you redistribute the Program (or any work based on the |
f185f654 KW |
179 | Program), the recipient automatically receives a license from the |
180 | original licensor to copy, distribute or modify the Program subject to | |
181 | these terms and conditions. You may not impose any further | |
182 | restrictions on the recipients' exercise of the rights granted herein. | |
f703fc96 | 183 | |
f185f654 KW |
184 | 7. The Free Software Foundation may publish revised and/or new |
185 | versions of the General Public License from time to time. Such new | |
186 | versions will be similar in spirit to the present version, but may | |
187 | differ in detail to address new problems or concerns. | |
f703fc96 | 188 | |
fa861958 DG |
189 | Each version is given a distinguishing version number. If the Program |
190 | specifies a version number of the license which applies to it and "any | |
f185f654 KW |
191 | later version", you have the option of following the terms and |
192 | conditions either of that version or of any later version published by | |
193 | the Free Software Foundation. If the Program does not specify a | |
194 | version number of the license, you may choose any version ever | |
195 | published by the Free Software Foundation. | |
f703fc96 | 196 | |
fa861958 | 197 | 8. If you wish to incorporate parts of the Program into other free |
f185f654 KW |
198 | programs whose distribution conditions are different, write to the |
199 | author to ask for permission. For software which is copyrighted by the | |
200 | Free Software Foundation, write to the Free Software Foundation; we | |
201 | sometimes make exceptions for this. Our decision will be guided by the | |
202 | two goals of preserving the free status of all derivatives of our free | |
203 | software and of promoting the sharing and reuse of software generally. | |
f703fc96 | 204 | |
fa861958 | 205 | NO WARRANTY |
f703fc96 | 206 | |
f185f654 KW |
207 | 9. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO |
208 | WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. | |
209 | EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR | |
210 | OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, | |
211 | EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
212 | WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
213 | THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS | |
214 | WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF | |
215 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION. | |
216 | ||
217 | 10. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN | |
218 | WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY | |
219 | AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU | |
220 | FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR | |
221 | CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE | |
222 | PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING | |
223 | RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A | |
224 | FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF | |
225 | SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH | |
226 | DAMAGES. | |
f703fc96 | 227 | |
fa861958 | 228 | END OF TERMS AND CONDITIONS |
f703fc96 | 229 | |
fa861958 | 230 | Appendix: How to Apply These Terms to Your New Programs |
f703fc96 | 231 | |
fa861958 DG |
232 | If you develop a new program, and you want it to be of the greatest |
233 | possible use to humanity, the best way to achieve this is to make it | |
234 | free software which everyone can redistribute and change under these | |
235 | terms. | |
f703fc96 | 236 | |
f185f654 KW |
237 | To do so, attach the following notices to the program. It is safest |
238 | to attach them to the start of each source file to most effectively | |
239 | convey the exclusion of warranty; and each file should have at least | |
240 | the "copyright" line and a pointer to where the full notice is found. | |
f703fc96 | 241 | |
f185f654 KW |
242 | <one line to give the program's name and a brief idea of what it |
243 | does.> | |
fa861958 | 244 | Copyright (C) 19yy <name of author> |
f703fc96 | 245 | |
f185f654 KW |
246 | This program is free software; you can redistribute it and/or |
247 | modify it under the terms of the GNU General Public License as | |
248 | published by the Free Software Foundation; either version 1, or (at | |
249 | your option) any later version. | |
f703fc96 | 250 | |
fa861958 DG |
251 | This program is distributed in the hope that it will be useful, |
252 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
253 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
254 | GNU General Public License for more details. | |
f703fc96 | 255 | |
fa861958 | 256 | You should have received a copy of the GNU General Public License |
de89470c | 257 | along with this program; if not, write to the Free Software |
8b753649 FC |
258 | Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA |
259 | 02110-1301 USA | |
f703fc96 KW |
260 | |
261 | ||
f185f654 KW |
262 | Also add information on how to contact you by electronic and paper |
263 | mail. | |
f703fc96 | 264 | |
fa861958 DG |
265 | If the program is interactive, make it output a short notice like this |
266 | when it starts in an interactive mode: | |
f703fc96 | 267 | |
fa861958 | 268 | Gnomovision version 69, Copyright (C) 19xx name of author |
f185f654 KW |
269 | Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type |
270 | 'show w'. This is free software, and you are welcome to | |
271 | redistribute it under certain conditions; type 'show c' for | |
272 | details. | |
f703fc96 | 273 | |
ccf3535a | 274 | The hypothetical commands 'show w' and 'show c' should show the |
fa861958 | 275 | appropriate parts of the General Public License. Of course, the |
ccf3535a | 276 | commands you use may be called something other than 'show w' and 'show |
fa861958 DG |
277 | c'; they could even be mouse-clicks or menu items--whatever suits your |
278 | program. | |
f703fc96 | 279 | |
fa861958 DG |
280 | You should also get your employer (if you work as a programmer) or your |
281 | school, if any, to sign a "copyright disclaimer" for the program, if | |
282 | necessary. Here a sample; alter the names: | |
f703fc96 | 283 | |
fa861958 | 284 | Yoyodyne, Inc., hereby disclaims all copyright interest in the |
ccf3535a | 285 | program 'Gnomovision' (a program to direct compilers to make passes |
fa861958 | 286 | at assemblers) written by James Hacker. |
f703fc96 | 287 | |
fa861958 DG |
288 | <signature of Ty Coon>, 1 April 1989 |
289 | Ty Coon, President of Vice | |
f703fc96 | 290 | |
fa861958 | 291 | That's all there is to it! |
2a551100 JH |
292 | |
293 | =cut |