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b8d4c8d0 | 1 | @c -*-texinfo-*- |
6336d8c3 | 2 | @setfilename ../../info/gpl |
b8d4c8d0 GM |
3 | |
4 | @node GPL, Tips, GNU Free Documentation License, Top | |
5 | @comment node-name, next, previous, up | |
6 | @appendix GNU General Public License | |
7 | @c The GNU General Public License. | |
8 | @center Version 3, 29 June 2007 | |
9 | ||
10 | @c This file is intended to be included within another document, | |
11 | @c hence no sectioning command or @node. | |
12 | ||
13 | @display | |
14 | Copyright @copyright{} 2007 Free Software Foundation, Inc. @url{http://fsf.org/} | |
15 | ||
16 | Everyone is permitted to copy and distribute verbatim copies of this | |
17 | license document, but changing it is not allowed. | |
18 | @end display | |
19 | ||
20 | @heading Preamble | |
21 | ||
22 | The GNU General Public License is a free, copyleft license for | |
23 | software and other kinds of works. | |
24 | ||
25 | The licenses for most software and other practical works are designed | |
26 | to take away your freedom to share and change the works. By contrast, | |
27 | the GNU General Public License is intended to guarantee your freedom | |
28 | to share and change all versions of a program---to make sure it remains | |
29 | free software for all its users. We, the Free Software Foundation, | |
30 | use the GNU General Public License for most of our software; it | |
31 | applies also to any other work released this way by its authors. You | |
32 | can apply it to your programs, too. | |
33 | ||
34 | When we speak of free software, we are referring to freedom, not | |
35 | price. Our General Public Licenses are designed to make sure that you | |
36 | have the freedom to distribute copies of free software (and charge for | |
37 | them if you wish), that you receive source code or can get it if you | |
38 | want it, that you can change the software or use pieces of it in new | |
39 | free programs, and that you know you can do these things. | |
40 | ||
41 | To protect your rights, we need to prevent others from denying you | |
42 | these rights or asking you to surrender the rights. Therefore, you | |
43 | have certain responsibilities if you distribute copies of the | |
44 | software, or if you modify it: responsibilities to respect the freedom | |
45 | of others. | |
46 | ||
47 | For example, if you distribute copies of such a program, whether | |
48 | gratis or for a fee, you must pass on to the recipients the same | |
49 | freedoms that you received. You must make sure that they, too, | |
50 | receive or can get the source code. And you must show them these | |
51 | terms so they know their rights. | |
52 | ||
53 | Developers that use the GNU GPL protect your rights with two steps: | |
54 | (1) assert copyright on the software, and (2) offer you this License | |
55 | giving you legal permission to copy, distribute and/or modify it. | |
56 | ||
57 | For the developers' and authors' protection, the GPL clearly explains | |
58 | that there is no warranty for this free software. For both users' and | |
59 | authors' sake, the GPL requires that modified versions be marked as | |
60 | changed, so that their problems will not be attributed erroneously to | |
61 | authors of previous versions. | |
62 | ||
63 | Some devices are designed to deny users access to install or run | |
64 | modified versions of the software inside them, although the | |
65 | manufacturer can do so. This is fundamentally incompatible with the | |
66 | aim of protecting users' freedom to change the software. The | |
67 | systematic pattern of such abuse occurs in the area of products for | |
68 | individuals to use, which is precisely where it is most unacceptable. | |
69 | Therefore, we have designed this version of the GPL to prohibit the | |
70 | practice for those products. If such problems arise substantially in | |
71 | other domains, we stand ready to extend this provision to those | |
72 | domains in future versions of the GPL, as needed to protect the | |
73 | freedom of users. | |
74 | ||
75 | Finally, every program is threatened constantly by software patents. | |
76 | States should not allow patents to restrict development and use of | |
77 | software on general-purpose computers, but in those that do, we wish | |
78 | to avoid the special danger that patents applied to a free program | |
79 | could make it effectively proprietary. To prevent this, the GPL | |
80 | assures that patents cannot be used to render the program non-free. | |
81 | ||
82 | The precise terms and conditions for copying, distribution and | |
83 | modification follow. | |
84 | ||
85 | @heading TERMS AND CONDITIONS | |
86 | ||
87 | @enumerate 0 | |
88 | @item Definitions. | |
89 | ||
90 | ``This License'' refers to version 3 of the GNU General Public License. | |
91 | ||
92 | ``Copyright'' also means copyright-like laws that apply to other kinds | |
93 | of works, such as semiconductor masks. | |
94 | ||
95 | ``The Program'' refers to any copyrightable work licensed under this | |
96 | License. Each licensee is addressed as ``you''. ``Licensees'' and | |
97 | ``recipients'' may be individuals or organizations. | |
98 | ||
99 | To ``modify'' a work means to copy from or adapt all or part of the work | |
100 | in a fashion requiring copyright permission, other than the making of | |
101 | an exact copy. The resulting work is called a ``modified version'' of | |
102 | the earlier work or a work ``based on'' the earlier work. | |
103 | ||
104 | A ``covered work'' means either the unmodified Program or a work based | |
105 | on the Program. | |
106 | ||
107 | To ``propagate'' a work means to do anything with it that, without | |
108 | permission, would make you directly or secondarily liable for | |
109 | infringement under applicable copyright law, except executing it on a | |
110 | computer or modifying a private copy. Propagation includes copying, | |
111 | distribution (with or without modification), making available to the | |
112 | public, and in some countries other activities as well. | |
113 | ||
114 | To ``convey'' a work means any kind of propagation that enables other | |
115 | parties to make or receive copies. Mere interaction with a user | |
116 | through a computer network, with no transfer of a copy, is not | |
117 | conveying. | |
118 | ||
119 | An interactive user interface displays ``Appropriate Legal Notices'' to | |
120 | the extent that it includes a convenient and prominently visible | |
121 | feature that (1) displays an appropriate copyright notice, and (2) | |
122 | tells the user that there is no warranty for the work (except to the | |
123 | extent that warranties are provided), that licensees may convey the | |
124 | work under this License, and how to view a copy of this License. If | |
125 | the interface presents a list of user commands or options, such as a | |
126 | menu, a prominent item in the list meets this criterion. | |
127 | ||
128 | @item Source Code. | |
129 | ||
130 | The ``source code'' for a work means the preferred form of the work for | |
131 | making modifications to it. ``Object code'' means any non-source form | |
132 | of a work. | |
133 | ||
134 | A ``Standard Interface'' means an interface that either is an official | |
135 | standard defined by a recognized standards body, or, in the case of | |
136 | interfaces specified for a particular programming language, one that | |
137 | is widely used among developers working in that language. | |
138 | ||
139 | The ``System Libraries'' of an executable work include anything, other | |
140 | than the work as a whole, that (a) is included in the normal form of | |
141 | packaging a Major Component, but which is not part of that Major | |
142 | Component, and (b) serves only to enable use of the work with that | |
143 | Major Component, or to implement a Standard Interface for which an | |
144 | implementation is available to the public in source code form. A | |
145 | ``Major Component'', in this context, means a major essential component | |
146 | (kernel, window system, and so on) of the specific operating system | |
147 | (if any) on which the executable work runs, or a compiler used to | |
148 | produce the work, or an object code interpreter used to run it. | |
149 | ||
150 | The ``Corresponding Source'' for a work in object code form means all | |
151 | the source code needed to generate, install, and (for an executable | |
152 | work) run the object code and to modify the work, including scripts to | |
153 | control those activities. However, it does not include the work's | |
154 | System Libraries, or general-purpose tools or generally available free | |
155 | programs which are used unmodified in performing those activities but | |
156 | which are not part of the work. For example, Corresponding Source | |
157 | includes interface definition files associated with source files for | |
158 | the work, and the source code for shared libraries and dynamically | |
159 | linked subprograms that the work is specifically designed to require, | |
160 | such as by intimate data communication or control flow between those | |
161 | subprograms and other parts of the work. | |
162 | ||
163 | The Corresponding Source need not include anything that users can | |
164 | regenerate automatically from other parts of the Corresponding Source. | |
165 | ||
166 | The Corresponding Source for a work in source code form is that same | |
167 | work. | |
168 | ||
169 | @item Basic Permissions. | |
170 | ||
171 | All rights granted under this License are granted for the term of | |
172 | copyright on the Program, and are irrevocable provided the stated | |
173 | conditions are met. This License explicitly affirms your unlimited | |
174 | permission to run the unmodified Program. The output from running a | |
175 | covered work is covered by this License only if the output, given its | |
176 | content, constitutes a covered work. This License acknowledges your | |
177 | rights of fair use or other equivalent, as provided by copyright law. | |
178 | ||
179 | You may make, run and propagate covered works that you do not convey, | |
180 | without conditions so long as your license otherwise remains in force. | |
181 | You may convey covered works to others for the sole purpose of having | |
182 | them make modifications exclusively for you, or provide you with | |
183 | facilities for running those works, provided that you comply with the | |
184 | terms of this License in conveying all material for which you do not | |
185 | control copyright. Those thus making or running the covered works for | |
186 | you must do so exclusively on your behalf, under your direction and | |
187 | control, on terms that prohibit them from making any copies of your | |
188 | copyrighted material outside their relationship with you. | |
189 | ||
190 | Conveying under any other circumstances is permitted solely under the | |
191 | conditions stated below. Sublicensing is not allowed; section 10 | |
192 | makes it unnecessary. | |
193 | ||
194 | @item Protecting Users' Legal Rights From Anti-Circumvention Law. | |
195 | ||
196 | No covered work shall be deemed part of an effective technological | |
197 | measure under any applicable law fulfilling obligations under article | |
198 | 11 of the WIPO copyright treaty adopted on 20 December 1996, or | |
199 | similar laws prohibiting or restricting circumvention of such | |
200 | measures. | |
201 | ||
202 | When you convey a covered work, you waive any legal power to forbid | |
203 | circumvention of technological measures to the extent such | |
204 | circumvention is effected by exercising rights under this License with | |
205 | respect to the covered work, and you disclaim any intention to limit | |
206 | operation or modification of the work as a means of enforcing, against | |
207 | the work's users, your or third parties' legal rights to forbid | |
208 | circumvention of technological measures. | |
209 | ||
210 | @item Conveying Verbatim Copies. | |
211 | ||
212 | You may convey verbatim copies of the Program's source code as you | |
213 | receive it, in any medium, provided that you conspicuously and | |
214 | appropriately publish on each copy an appropriate copyright notice; | |
215 | keep intact all notices stating that this License and any | |
216 | non-permissive terms added in accord with section 7 apply to the code; | |
217 | keep intact all notices of the absence of any warranty; and give all | |
218 | recipients a copy of this License along with the Program. | |
219 | ||
220 | You may charge any price or no price for each copy that you convey, | |
221 | and you may offer support or warranty protection for a fee. | |
222 | ||
223 | @item Conveying Modified Source Versions. | |
224 | ||
225 | You may convey a work based on the Program, or the modifications to | |
226 | produce it from the Program, in the form of source code under the | |
227 | terms of section 4, provided that you also meet all of these | |
228 | conditions: | |
229 | ||
230 | @enumerate a | |
231 | @item | |
232 | The work must carry prominent notices stating that you modified it, | |
233 | and giving a relevant date. | |
234 | ||
235 | @item | |
236 | The work must carry prominent notices stating that it is released | |
237 | under this License and any conditions added under section 7. This | |
238 | requirement modifies the requirement in section 4 to ``keep intact all | |
239 | notices''. | |
240 | ||
241 | @item | |
242 | You must license the entire work, as a whole, under this License to | |
243 | anyone who comes into possession of a copy. This License will | |
244 | therefore apply, along with any applicable section 7 additional terms, | |
245 | to the whole of the work, and all its parts, regardless of how they | |
246 | are packaged. This License gives no permission to license the work in | |
247 | any other way, but it does not invalidate such permission if you have | |
248 | separately received it. | |
249 | ||
250 | @item | |
251 | If the work has interactive user interfaces, each must display | |
252 | Appropriate Legal Notices; however, if the Program has interactive | |
253 | interfaces that do not display Appropriate Legal Notices, your work | |
254 | need not make them do so. | |
255 | @end enumerate | |
256 | ||
257 | A compilation of a covered work with other separate and independent | |
258 | works, which are not by their nature extensions of the covered work, | |
259 | and which are not combined with it such as to form a larger program, | |
260 | in or on a volume of a storage or distribution medium, is called an | |
261 | ``aggregate'' if the compilation and its resulting copyright are not | |
262 | used to limit the access or legal rights of the compilation's users | |
263 | beyond what the individual works permit. Inclusion of a covered work | |
264 | in an aggregate does not cause this License to apply to the other | |
265 | parts of the aggregate. | |
266 | ||
267 | @item Conveying Non-Source Forms. | |
268 | ||
269 | You may convey a covered work in object code form under the terms of | |
270 | sections 4 and 5, provided that you also convey the machine-readable | |
271 | Corresponding Source under the terms of this License, in one of these | |
272 | ways: | |
273 | ||
274 | @enumerate a | |
275 | @item | |
276 | Convey the object code in, or embodied in, a physical product | |
277 | (including a physical distribution medium), accompanied by the | |
278 | Corresponding Source fixed on a durable physical medium customarily | |
279 | used for software interchange. | |
280 | ||
281 | @item | |
282 | Convey the object code in, or embodied in, a physical product | |
283 | (including a physical distribution medium), accompanied by a written | |
284 | offer, valid for at least three years and valid for as long as you | |
285 | offer spare parts or customer support for that product model, to give | |
286 | anyone who possesses the object code either (1) a copy of the | |
287 | Corresponding Source for all the software in the product that is | |
288 | covered by this License, on a durable physical medium customarily used | |
289 | for software interchange, for a price no more than your reasonable | |
290 | cost of physically performing this conveying of source, or (2) access | |
291 | to copy the Corresponding Source from a network server at no charge. | |
292 | ||
293 | @item | |
294 | Convey individual copies of the object code with a copy of the written | |
295 | offer to provide the Corresponding Source. This alternative is | |
296 | allowed only occasionally and noncommercially, and only if you | |
297 | received the object code with such an offer, in accord with subsection | |
298 | 6b. | |
299 | ||
300 | @item | |
301 | Convey the object code by offering access from a designated place | |
302 | (gratis or for a charge), and offer equivalent access to the | |
303 | Corresponding Source in the same way through the same place at no | |
304 | further charge. You need not require recipients to copy the | |
305 | Corresponding Source along with the object code. If the place to copy | |
306 | the object code is a network server, the Corresponding Source may be | |
307 | on a different server (operated by you or a third party) that supports | |
308 | equivalent copying facilities, provided you maintain clear directions | |
309 | next to the object code saying where to find the Corresponding Source. | |
310 | Regardless of what server hosts the Corresponding Source, you remain | |
311 | obligated to ensure that it is available for as long as needed to | |
312 | satisfy these requirements. | |
313 | ||
314 | @item | |
315 | Convey the object code using peer-to-peer transmission, provided you | |
316 | inform other peers where the object code and Corresponding Source of | |
317 | the work are being offered to the general public at no charge under | |
318 | subsection 6d. | |
319 | ||
320 | @end enumerate | |
321 | ||
322 | A separable portion of the object code, whose source code is excluded | |
323 | from the Corresponding Source as a System Library, need not be | |
324 | included in conveying the object code work. | |
325 | ||
326 | A ``User Product'' is either (1) a ``consumer product'', which means any | |
327 | tangible personal property which is normally used for personal, | |
328 | family, or household purposes, or (2) anything designed or sold for | |
329 | incorporation into a dwelling. In determining whether a product is a | |
330 | consumer product, doubtful cases shall be resolved in favor of | |
331 | coverage. For a particular product received by a particular user, | |
332 | ``normally used'' refers to a typical or common use of that class of | |
333 | product, regardless of the status of the particular user or of the way | |
334 | in which the particular user actually uses, or expects or is expected | |
335 | to use, the product. A product is a consumer product regardless of | |
336 | whether the product has substantial commercial, industrial or | |
337 | non-consumer uses, unless such uses represent the only significant | |
338 | mode of use of the product. | |
339 | ||
340 | ``Installation Information'' for a User Product means any methods, | |
341 | procedures, authorization keys, or other information required to | |
342 | install and execute modified versions of a covered work in that User | |
343 | Product from a modified version of its Corresponding Source. The | |
344 | information must suffice to ensure that the continued functioning of | |
345 | the modified object code is in no case prevented or interfered with | |
346 | solely because modification has been made. | |
347 | ||
348 | If you convey an object code work under this section in, or with, or | |
349 | specifically for use in, a User Product, and the conveying occurs as | |
350 | part of a transaction in which the right of possession and use of the | |
351 | User Product is transferred to the recipient in perpetuity or for a | |
352 | fixed term (regardless of how the transaction is characterized), the | |
353 | Corresponding Source conveyed under this section must be accompanied | |
354 | by the Installation Information. But this requirement does not apply | |
355 | if neither you nor any third party retains the ability to install | |
356 | modified object code on the User Product (for example, the work has | |
357 | been installed in ROM). | |
358 | ||
359 | The requirement to provide Installation Information does not include a | |
360 | requirement to continue to provide support service, warranty, or | |
361 | updates for a work that has been modified or installed by the | |
362 | recipient, or for the User Product in which it has been modified or | |
363 | installed. Access to a network may be denied when the modification | |
364 | itself materially and adversely affects the operation of the network | |
365 | or violates the rules and protocols for communication across the | |
366 | network. | |
367 | ||
368 | Corresponding Source conveyed, and Installation Information provided, | |
369 | in accord with this section must be in a format that is publicly | |
370 | documented (and with an implementation available to the public in | |
371 | source code form), and must require no special password or key for | |
372 | unpacking, reading or copying. | |
373 | ||
374 | @item Additional Terms. | |
375 | ||
376 | ``Additional permissions'' are terms that supplement the terms of this | |
377 | License by making exceptions from one or more of its conditions. | |
378 | Additional permissions that are applicable to the entire Program shall | |
379 | be treated as though they were included in this License, to the extent | |
380 | that they are valid under applicable law. If additional permissions | |
381 | apply only to part of the Program, that part may be used separately | |
382 | under those permissions, but the entire Program remains governed by | |
383 | this License without regard to the additional permissions. | |
384 | ||
385 | When you convey a copy of a covered work, you may at your option | |
386 | remove any additional permissions from that copy, or from any part of | |
387 | it. (Additional permissions may be written to require their own | |
388 | removal in certain cases when you modify the work.) You may place | |
389 | additional permissions on material, added by you to a covered work, | |
390 | for which you have or can give appropriate copyright permission. | |
391 | ||
392 | Notwithstanding any other provision of this License, for material you | |
393 | add to a covered work, you may (if authorized by the copyright holders | |
394 | of that material) supplement the terms of this License with terms: | |
395 | ||
396 | @enumerate a | |
397 | @item | |
398 | Disclaiming warranty or limiting liability differently from the terms | |
399 | of sections 15 and 16 of this License; or | |
400 | ||
401 | @item | |
402 | Requiring preservation of specified reasonable legal notices or author | |
403 | attributions in that material or in the Appropriate Legal Notices | |
404 | displayed by works containing it; or | |
405 | ||
406 | @item | |
407 | Prohibiting misrepresentation of the origin of that material, or | |
408 | requiring that modified versions of such material be marked in | |
409 | reasonable ways as different from the original version; or | |
410 | ||
411 | @item | |
412 | Limiting the use for publicity purposes of names of licensors or | |
413 | authors of the material; or | |
414 | ||
415 | @item | |
416 | Declining to grant rights under trademark law for use of some trade | |
417 | names, trademarks, or service marks; or | |
418 | ||
419 | @item | |
420 | Requiring indemnification of licensors and authors of that material by | |
421 | anyone who conveys the material (or modified versions of it) with | |
422 | contractual assumptions of liability to the recipient, for any | |
423 | liability that these contractual assumptions directly impose on those | |
424 | licensors and authors. | |
425 | @end enumerate | |
426 | ||
427 | All other non-permissive additional terms are considered ``further | |
428 | restrictions'' within the meaning of section 10. If the Program as you | |
429 | received it, or any part of it, contains a notice stating that it is | |
430 | governed by this License along with a term that is a further | |
431 | restriction, you may remove that term. If a license document contains | |
432 | a further restriction but permits relicensing or conveying under this | |
433 | License, you may add to a covered work material governed by the terms | |
434 | of that license document, provided that the further restriction does | |
435 | not survive such relicensing or conveying. | |
436 | ||
437 | If you add terms to a covered work in accord with this section, you | |
438 | must place, in the relevant source files, a statement of the | |
439 | additional terms that apply to those files, or a notice indicating | |
440 | where to find the applicable terms. | |
441 | ||
442 | Additional terms, permissive or non-permissive, may be stated in the | |
443 | form of a separately written license, or stated as exceptions; the | |
444 | above requirements apply either way. | |
445 | ||
446 | @item Termination. | |
447 | ||
448 | You may not propagate or modify a covered work except as expressly | |
449 | provided under this License. Any attempt otherwise to propagate or | |
450 | modify it is void, and will automatically terminate your rights under | |
451 | this License (including any patent licenses granted under the third | |
452 | paragraph of section 11). | |
453 | ||
454 | However, if you cease all violation of this License, then your license | |
455 | from a particular copyright holder is reinstated (a) provisionally, | |
456 | unless and until the copyright holder explicitly and finally | |
457 | terminates your license, and (b) permanently, if the copyright holder | |
458 | fails to notify you of the violation by some reasonable means prior to | |
459 | 60 days after the cessation. | |
460 | ||
461 | Moreover, your license from a particular copyright holder is | |
462 | reinstated permanently if the copyright holder notifies you of the | |
463 | violation by some reasonable means, this is the first time you have | |
464 | received notice of violation of this License (for any work) from that | |
465 | copyright holder, and you cure the violation prior to 30 days after | |
466 | your receipt of the notice. | |
467 | ||
468 | Termination of your rights under this section does not terminate the | |
469 | licenses of parties who have received copies or rights from you under | |
470 | this License. If your rights have been terminated and not permanently | |
471 | reinstated, you do not qualify to receive new licenses for the same | |
472 | material under section 10. | |
473 | ||
474 | @item Acceptance Not Required for Having Copies. | |
475 | ||
476 | You are not required to accept this License in order to receive or run | |
477 | a copy of the Program. Ancillary propagation of a covered work | |
478 | occurring solely as a consequence of using peer-to-peer transmission | |
479 | to receive a copy likewise does not require acceptance. However, | |
480 | nothing other than this License grants you permission to propagate or | |
481 | modify any covered work. These actions infringe copyright if you do | |
482 | not accept this License. Therefore, by modifying or propagating a | |
483 | covered work, you indicate your acceptance of this License to do so. | |
484 | ||
485 | @item Automatic Licensing of Downstream Recipients. | |
486 | ||
487 | Each time you convey a covered work, the recipient automatically | |
488 | receives a license from the original licensors, to run, modify and | |
489 | propagate that work, subject to this License. You are not responsible | |
490 | for enforcing compliance by third parties with this License. | |
491 | ||
492 | An ``entity transaction'' is a transaction transferring control of an | |
493 | organization, or substantially all assets of one, or subdividing an | |
494 | organization, or merging organizations. If propagation of a covered | |
495 | work results from an entity transaction, each party to that | |
496 | transaction who receives a copy of the work also receives whatever | |
497 | licenses to the work the party's predecessor in interest had or could | |
498 | give under the previous paragraph, plus a right to possession of the | |
499 | Corresponding Source of the work from the predecessor in interest, if | |
500 | the predecessor has it or can get it with reasonable efforts. | |
501 | ||
502 | You may not impose any further restrictions on the exercise of the | |
503 | rights granted or affirmed under this License. For example, you may | |
504 | not impose a license fee, royalty, or other charge for exercise of | |
505 | rights granted under this License, and you may not initiate litigation | |
506 | (including a cross-claim or counterclaim in a lawsuit) alleging that | |
507 | any patent claim is infringed by making, using, selling, offering for | |
508 | sale, or importing the Program or any portion of it. | |
509 | ||
510 | @item Patents. | |
511 | ||
512 | A ``contributor'' is a copyright holder who authorizes use under this | |
513 | License of the Program or a work on which the Program is based. The | |
514 | work thus licensed is called the contributor's ``contributor version''. | |
515 | ||
516 | A contributor's ``essential patent claims'' are all patent claims owned | |
517 | or controlled by the contributor, whether already acquired or | |
518 | hereafter acquired, that would be infringed by some manner, permitted | |
519 | by this License, of making, using, or selling its contributor version, | |
520 | but do not include claims that would be infringed only as a | |
521 | consequence of further modification of the contributor version. For | |
522 | purposes of this definition, ``control'' includes the right to grant | |
523 | patent sublicenses in a manner consistent with the requirements of | |
524 | this License. | |
525 | ||
526 | Each contributor grants you a non-exclusive, worldwide, royalty-free | |
527 | patent license under the contributor's essential patent claims, to | |
528 | make, use, sell, offer for sale, import and otherwise run, modify and | |
529 | propagate the contents of its contributor version. | |
530 | ||
531 | In the following three paragraphs, a ``patent license'' is any express | |
532 | agreement or commitment, however denominated, not to enforce a patent | |
533 | (such as an express permission to practice a patent or covenant not to | |
534 | sue for patent infringement). To ``grant'' such a patent license to a | |
535 | party means to make such an agreement or commitment not to enforce a | |
536 | patent against the party. | |
537 | ||
538 | If you convey a covered work, knowingly relying on a patent license, | |
539 | and the Corresponding Source of the work is not available for anyone | |
540 | to copy, free of charge and under the terms of this License, through a | |
541 | publicly available network server or other readily accessible means, | |
542 | then you must either (1) cause the Corresponding Source to be so | |
543 | available, or (2) arrange to deprive yourself of the benefit of the | |
544 | patent license for this particular work, or (3) arrange, in a manner | |
545 | consistent with the requirements of this License, to extend the patent | |
546 | license to downstream recipients. ``Knowingly relying'' means you have | |
547 | actual knowledge that, but for the patent license, your conveying the | |
548 | covered work in a country, or your recipient's use of the covered work | |
549 | in a country, would infringe one or more identifiable patents in that | |
550 | country that you have reason to believe are valid. | |
551 | ||
552 | If, pursuant to or in connection with a single transaction or | |
553 | arrangement, you convey, or propagate by procuring conveyance of, a | |
554 | covered work, and grant a patent license to some of the parties | |
555 | receiving the covered work authorizing them to use, propagate, modify | |
556 | or convey a specific copy of the covered work, then the patent license | |
557 | you grant is automatically extended to all recipients of the covered | |
558 | work and works based on it. | |
559 | ||
560 | A patent license is ``discriminatory'' if it does not include within the | |
561 | scope of its coverage, prohibits the exercise of, or is conditioned on | |
562 | the non-exercise of one or more of the rights that are specifically | |
563 | granted under this License. You may not convey a covered work if you | |
564 | are a party to an arrangement with a third party that is in the | |
565 | business of distributing software, under which you make payment to the | |
566 | third party based on the extent of your activity of conveying the | |
567 | work, and under which the third party grants, to any of the parties | |
568 | who would receive the covered work from you, a discriminatory patent | |
569 | license (a) in connection with copies of the covered work conveyed by | |
570 | you (or copies made from those copies), or (b) primarily for and in | |
571 | connection with specific products or compilations that contain the | |
572 | covered work, unless you entered into that arrangement, or that patent | |
573 | license was granted, prior to 28 March 2007. | |
574 | ||
575 | Nothing in this License shall be construed as excluding or limiting | |
576 | any implied license or other defenses to infringement that may | |
577 | otherwise be available to you under applicable patent law. | |
578 | ||
579 | @item No Surrender of Others' Freedom. | |
580 | ||
581 | If conditions are imposed on you (whether by court order, agreement or | |
582 | otherwise) that contradict the conditions of this License, they do not | |
583 | excuse you from the conditions of this License. If you cannot convey | |
584 | a covered work so as to satisfy simultaneously your obligations under | |
585 | this License and any other pertinent obligations, then as a | |
586 | consequence you may not convey it at all. For example, if you agree | |
587 | to terms that obligate you to collect a royalty for further conveying | |
588 | from those to whom you convey the Program, the only way you could | |
589 | satisfy both those terms and this License would be to refrain entirely | |
590 | from conveying the Program. | |
591 | ||
592 | @item Use with the GNU Affero General Public License. | |
593 | ||
594 | Notwithstanding any other provision of this License, you have | |
595 | permission to link or combine any covered work with a work licensed | |
596 | under version 3 of the GNU Affero General Public License into a single | |
597 | combined work, and to convey the resulting work. The terms of this | |
598 | License will continue to apply to the part which is the covered work, | |
599 | but the special requirements of the GNU Affero General Public License, | |
600 | section 13, concerning interaction through a network will apply to the | |
601 | combination as such. | |
602 | ||
603 | @item Revised Versions of this License. | |
604 | ||
605 | The Free Software Foundation may publish revised and/or new versions | |
606 | of the GNU General Public License from time to time. Such new | |
607 | versions will be similar in spirit to the present version, but may | |
608 | differ in detail to address new problems or concerns. | |
609 | ||
610 | Each version is given a distinguishing version number. If the Program | |
611 | specifies that a certain numbered version of the GNU General Public | |
612 | License ``or any later version'' applies to it, you have the option of | |
613 | following the terms and conditions either of that numbered version or | |
614 | of any later version published by the Free Software Foundation. If | |
615 | the Program does not specify a version number of the GNU General | |
616 | Public License, you may choose any version ever published by the Free | |
617 | Software Foundation. | |
618 | ||
619 | If the Program specifies that a proxy can decide which future versions | |
620 | of the GNU General Public License can be used, that proxy's public | |
621 | statement of acceptance of a version permanently authorizes you to | |
622 | choose that version for the Program. | |
623 | ||
624 | Later license versions may give you additional or different | |
625 | permissions. However, no additional obligations are imposed on any | |
626 | author or copyright holder as a result of your choosing to follow a | |
627 | later version. | |
628 | ||
629 | @item Disclaimer of Warranty. | |
630 | ||
631 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY | |
632 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT | |
633 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM ``AS IS'' WITHOUT | |
634 | WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT | |
635 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
636 | A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND | |
637 | PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE | |
638 | DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR | |
639 | CORRECTION. | |
640 | ||
641 | @item Limitation of Liability. | |
642 | ||
643 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING | |
644 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR | |
645 | CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, | |
646 | INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES | |
647 | ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT | |
648 | NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR | |
649 | LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM | |
650 | TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER | |
651 | PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. | |
652 | ||
653 | @item Interpretation of Sections 15 and 16. | |
654 | ||
655 | If the disclaimer of warranty and limitation of liability provided | |
656 | above cannot be given local legal effect according to their terms, | |
657 | reviewing courts shall apply local law that most closely approximates | |
658 | an absolute waiver of all civil liability in connection with the | |
659 | Program, unless a warranty or assumption of liability accompanies a | |
660 | copy of the Program in return for a fee. | |
661 | ||
662 | @end enumerate | |
663 | ||
664 | @heading END OF TERMS AND CONDITIONS | |
665 | ||
666 | @heading How to Apply These Terms to Your New Programs | |
667 | ||
668 | If you develop a new program, and you want it to be of the greatest | |
669 | possible use to the public, the best way to achieve this is to make it | |
670 | free software which everyone can redistribute and change under these | |
671 | terms. | |
672 | ||
673 | To do so, attach the following notices to the program. It is safest | |
674 | to attach them to the start of each source file to most effectively | |
675 | state the exclusion of warranty; and each file should have at least | |
676 | the ``copyright'' line and a pointer to where the full notice is found. | |
677 | ||
678 | @smallexample | |
679 | @var{one line to give the program's name and a brief idea of what it does.} | |
680 | Copyright (C) @var{year} @var{name of author} | |
681 | ||
682 | This program is free software: you can redistribute it and/or modify | |
683 | it under the terms of the GNU General Public License as published by | |
684 | the Free Software Foundation, either version 3 of the License, or (at | |
685 | your option) any later version. | |
686 | ||
687 | This program is distributed in the hope that it will be useful, but | |
688 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
689 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
690 | General Public License for more details. | |
691 | ||
692 | You should have received a copy of the GNU General Public License | |
693 | along with this program. If not, see @url{http://www.gnu.org/licenses/}. | |
694 | @end smallexample | |
695 | ||
696 | Also add information on how to contact you by electronic and paper mail. | |
697 | ||
698 | If the program does terminal interaction, make it output a short | |
699 | notice like this when it starts in an interactive mode: | |
700 | ||
701 | @smallexample | |
702 | @var{program} Copyright (C) @var{year} @var{name of author} | |
703 | This program comes with ABSOLUTELY NO WARRANTY; for details type @samp{show w}. | |
704 | This is free software, and you are welcome to redistribute it | |
705 | under certain conditions; type @samp{show c} for details. | |
706 | @end smallexample | |
707 | ||
708 | The hypothetical commands @samp{show w} and @samp{show c} should show | |
709 | the appropriate parts of the General Public License. Of course, your | |
710 | program's commands might be different; for a GUI interface, you would | |
711 | use an ``about box''. | |
712 | ||
713 | You should also get your employer (if you work as a programmer) or school, | |
714 | if any, to sign a ``copyright disclaimer'' for the program, if necessary. | |
715 | For more information on this, and how to apply and follow the GNU GPL, see | |
716 | @url{http://www.gnu.org/licenses/}. | |
717 | ||
718 | The GNU General Public License does not permit incorporating your | |
719 | program into proprietary programs. If your program is a subroutine | |
720 | library, you may consider it more useful to permit linking proprietary | |
721 | applications with the library. If this is what you want to do, use | |
722 | the GNU Lesser General Public License instead of this License. But | |
723 | first, please read @url{http://www.gnu.org/philosophy/why-not-lgpl.html}. | |
724 | ||
725 | @ignore | |
726 | arch-tag: d00ac830-e120-41fb-bbc5-7ca3eeaa227f | |
727 | @end ignore |