gpl.7 40 KB

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  130. .\"
  131. .IX Title "GPL 7"
  132. .TH GPL 7 "2021-06-21" "gcc-10.3.1" "GNU"
  133. .\" For nroff, turn off justification. Always turn off hyphenation; it makes
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  135. .if n .ad l
  136. .nh
  137. .SH "NAME"
  138. gpl \- GNU General Public License
  139. .SH "DESCRIPTION"
  140. .IX Header "DESCRIPTION"
  141. .SS "\s-1GNU\s0 General Public License"
  142. .IX Subsection "GNU General Public License"
  143. .SS "Version 3, 29 June 2007"
  144. .IX Subsection "Version 3, 29 June 2007"
  145. .Vb 1
  146. \& Copyright (c) 2007 Free Software Foundation, Inc. <http://fsf.org/>
  147. \&
  148. \& Everyone is permitted to copy and distribute verbatim copies of this
  149. \& license document, but changing it is not allowed.
  150. .Ve
  151. .SS "Preamble"
  152. .IX Subsection "Preamble"
  153. The \s-1GNU\s0 General Public License is a free, copyleft license for
  154. software and other kinds of works.
  155. .PP
  156. The licenses for most software and other practical works are designed
  157. to take away your freedom to share and change the works. By contrast,
  158. the \s-1GNU\s0 General Public License is intended to guarantee your freedom
  159. to share and change all versions of a program\*(--to make sure it remains
  160. free software for all its users. We, the Free Software Foundation,
  161. use the \s-1GNU\s0 General Public License for most of our software; it
  162. applies also to any other work released this way by its authors. You
  163. can apply it to your programs, too.
  164. .PP
  165. When we speak of free software, we are referring to freedom, not
  166. price. Our General Public Licenses are designed to make sure that you
  167. have the freedom to distribute copies of free software (and charge for
  168. them if you wish), that you receive source code or can get it if you
  169. want it, that you can change the software or use pieces of it in new
  170. free programs, and that you know you can do these things.
  171. .PP
  172. To protect your rights, we need to prevent others from denying you
  173. these rights or asking you to surrender the rights. Therefore, you
  174. have certain responsibilities if you distribute copies of the
  175. software, or if you modify it: responsibilities to respect the freedom
  176. of others.
  177. .PP
  178. For example, if you distribute copies of such a program, whether
  179. gratis or for a fee, you must pass on to the recipients the same
  180. freedoms that you received. You must make sure that they, too,
  181. receive or can get the source code. And you must show them these
  182. terms so they know their rights.
  183. .PP
  184. Developers that use the \s-1GNU GPL\s0 protect your rights with two steps:
  185. (1) assert copyright on the software, and (2) offer you this License
  186. giving you legal permission to copy, distribute and/or modify it.
  187. .PP
  188. For the developers' and authors' protection, the \s-1GPL\s0 clearly explains
  189. that there is no warranty for this free software. For both users' and
  190. authors' sake, the \s-1GPL\s0 requires that modified versions be marked as
  191. changed, so that their problems will not be attributed erroneously to
  192. authors of previous versions.
  193. .PP
  194. Some devices are designed to deny users access to install or run
  195. modified versions of the software inside them, although the
  196. manufacturer can do so. This is fundamentally incompatible with the
  197. aim of protecting users' freedom to change the software. The
  198. systematic pattern of such abuse occurs in the area of products for
  199. individuals to use, which is precisely where it is most unacceptable.
  200. Therefore, we have designed this version of the \s-1GPL\s0 to prohibit the
  201. practice for those products. If such problems arise substantially in
  202. other domains, we stand ready to extend this provision to those
  203. domains in future versions of the \s-1GPL,\s0 as needed to protect the
  204. freedom of users.
  205. .PP
  206. Finally, every program is threatened constantly by software patents.
  207. States should not allow patents to restrict development and use of
  208. software on general-purpose computers, but in those that do, we wish
  209. to avoid the special danger that patents applied to a free program
  210. could make it effectively proprietary. To prevent this, the \s-1GPL\s0
  211. assures that patents cannot be used to render the program non-free.
  212. .PP
  213. The precise terms and conditions for copying, distribution and
  214. modification follow.
  215. .SS "\s-1TERMS AND CONDITIONS\s0"
  216. .IX Subsection "TERMS AND CONDITIONS"
  217. .IP "0. Definitions." 4
  218. .IX Item "0. Definitions."
  219. \&\*(L"This License\*(R" refers to version 3 of the \s-1GNU\s0 General Public License.
  220. .Sp
  221. \&\*(L"Copyright\*(R" also means copyright-like laws that apply to other kinds
  222. of works, such as semiconductor masks.
  223. .Sp
  224. \&\*(L"The Program\*(R" refers to any copyrightable work licensed under this
  225. License. Each licensee is addressed as \*(L"you\*(R". \*(L"Licensees\*(R" and
  226. \&\*(L"recipients\*(R" may be individuals or organizations.
  227. .Sp
  228. To \*(L"modify\*(R" a work means to copy from or adapt all or part of the work
  229. in a fashion requiring copyright permission, other than the making of
  230. an exact copy. The resulting work is called a \*(L"modified version\*(R" of
  231. the earlier work or a work \*(L"based on\*(R" the earlier work.
  232. .Sp
  233. A \*(L"covered work\*(R" means either the unmodified Program or a work based
  234. on the Program.
  235. .Sp
  236. To \*(L"propagate\*(R" a work means to do anything with it that, without
  237. permission, would make you directly or secondarily liable for
  238. infringement under applicable copyright law, except executing it on a
  239. computer or modifying a private copy. Propagation includes copying,
  240. distribution (with or without modification), making available to the
  241. public, and in some countries other activities as well.
  242. .Sp
  243. To \*(L"convey\*(R" a work means any kind of propagation that enables other
  244. parties to make or receive copies. Mere interaction with a user
  245. through a computer network, with no transfer of a copy, is not
  246. conveying.
  247. .Sp
  248. An interactive user interface displays \*(L"Appropriate Legal Notices\*(R" to
  249. the extent that it includes a convenient and prominently visible
  250. feature that (1) displays an appropriate copyright notice, and (2)
  251. tells the user that there is no warranty for the work (except to the
  252. extent that warranties are provided), that licensees may convey the
  253. work under this License, and how to view a copy of this License. If
  254. the interface presents a list of user commands or options, such as a
  255. menu, a prominent item in the list meets this criterion.
  256. .IP "1. Source Code." 4
  257. .IX Item "1. Source Code."
  258. The \*(L"source code\*(R" for a work means the preferred form of the work for
  259. making modifications to it. \*(L"Object code\*(R" means any non-source form
  260. of a work.
  261. .Sp
  262. A \*(L"Standard Interface\*(R" means an interface that either is an official
  263. standard defined by a recognized standards body, or, in the case of
  264. interfaces specified for a particular programming language, one that
  265. is widely used among developers working in that language.
  266. .Sp
  267. The \*(L"System Libraries\*(R" of an executable work include anything, other
  268. than the work as a whole, that (a) is included in the normal form of
  269. packaging a Major Component, but which is not part of that Major
  270. Component, and (b) serves only to enable use of the work with that
  271. Major Component, or to implement a Standard Interface for which an
  272. implementation is available to the public in source code form. A
  273. \&\*(L"Major Component\*(R", in this context, means a major essential component
  274. (kernel, window system, and so on) of the specific operating system
  275. (if any) on which the executable work runs, or a compiler used to
  276. produce the work, or an object code interpreter used to run it.
  277. .Sp
  278. The \*(L"Corresponding Source\*(R" for a work in object code form means all
  279. the source code needed to generate, install, and (for an executable
  280. work) run the object code and to modify the work, including scripts to
  281. control those activities. However, it does not include the work's
  282. System Libraries, or general-purpose tools or generally available free
  283. programs which are used unmodified in performing those activities but
  284. which are not part of the work. For example, Corresponding Source
  285. includes interface definition files associated with source files for
  286. the work, and the source code for shared libraries and dynamically
  287. linked subprograms that the work is specifically designed to require,
  288. such as by intimate data communication or control flow between those
  289. subprograms and other parts of the work.
  290. .Sp
  291. The Corresponding Source need not include anything that users can
  292. regenerate automatically from other parts of the Corresponding Source.
  293. .Sp
  294. The Corresponding Source for a work in source code form is that same
  295. work.
  296. .IP "2. Basic Permissions." 4
  297. .IX Item "2. Basic Permissions."
  298. All rights granted under this License are granted for the term of
  299. copyright on the Program, and are irrevocable provided the stated
  300. conditions are met. This License explicitly affirms your unlimited
  301. permission to run the unmodified Program. The output from running a
  302. covered work is covered by this License only if the output, given its
  303. content, constitutes a covered work. This License acknowledges your
  304. rights of fair use or other equivalent, as provided by copyright law.
  305. .Sp
  306. You may make, run and propagate covered works that you do not convey,
  307. without conditions so long as your license otherwise remains in force.
  308. You may convey covered works to others for the sole purpose of having
  309. them make modifications exclusively for you, or provide you with
  310. facilities for running those works, provided that you comply with the
  311. terms of this License in conveying all material for which you do not
  312. control copyright. Those thus making or running the covered works for
  313. you must do so exclusively on your behalf, under your direction and
  314. control, on terms that prohibit them from making any copies of your
  315. copyrighted material outside their relationship with you.
  316. .Sp
  317. Conveying under any other circumstances is permitted solely under the
  318. conditions stated below. Sublicensing is not allowed; section 10
  319. makes it unnecessary.
  320. .IP "3. Protecting Users' Legal Rights From Anti-Circumvention Law." 4
  321. .IX Item "3. Protecting Users' Legal Rights From Anti-Circumvention Law."
  322. No covered work shall be deemed part of an effective technological
  323. measure under any applicable law fulfilling obligations under article
  324. 11 of the \s-1WIPO\s0 copyright treaty adopted on 20 December 1996, or
  325. similar laws prohibiting or restricting circumvention of such
  326. measures.
  327. .Sp
  328. When you convey a covered work, you waive any legal power to forbid
  329. circumvention of technological measures to the extent such
  330. circumvention is effected by exercising rights under this License with
  331. respect to the covered work, and you disclaim any intention to limit
  332. operation or modification of the work as a means of enforcing, against
  333. the work's users, your or third parties' legal rights to forbid
  334. circumvention of technological measures.
  335. .IP "4. Conveying Verbatim Copies." 4
  336. .IX Item "4. Conveying Verbatim Copies."
  337. You may convey verbatim copies of the Program's source code as you
  338. receive it, in any medium, provided that you conspicuously and
  339. appropriately publish on each copy an appropriate copyright notice;
  340. keep intact all notices stating that this License and any
  341. non-permissive terms added in accord with section 7 apply to the code;
  342. keep intact all notices of the absence of any warranty; and give all
  343. recipients a copy of this License along with the Program.
  344. .Sp
  345. You may charge any price or no price for each copy that you convey,
  346. and you may offer support or warranty protection for a fee.
  347. .IP "5. Conveying Modified Source Versions." 4
  348. .IX Item "5. Conveying Modified Source Versions."
  349. You may convey a work based on the Program, or the modifications to
  350. produce it from the Program, in the form of source code under the
  351. terms of section 4, provided that you also meet all of these
  352. conditions:
  353. .RS 4
  354. .IP "a." 4
  355. .IX Item "a."
  356. The work must carry prominent notices stating that you modified it,
  357. and giving a relevant date.
  358. .IP "b." 4
  359. .IX Item "b."
  360. The work must carry prominent notices stating that it is released
  361. under this License and any conditions added under section 7. This
  362. requirement modifies the requirement in section 4 to \*(L"keep intact all
  363. notices\*(R".
  364. .IP "c." 4
  365. .IX Item "c."
  366. You must license the entire work, as a whole, under this License to
  367. anyone who comes into possession of a copy. This License will
  368. therefore apply, along with any applicable section 7 additional terms,
  369. to the whole of the work, and all its parts, regardless of how they
  370. are packaged. This License gives no permission to license the work in
  371. any other way, but it does not invalidate such permission if you have
  372. separately received it.
  373. .IP "d." 4
  374. .IX Item "d."
  375. If the work has interactive user interfaces, each must display
  376. Appropriate Legal Notices; however, if the Program has interactive
  377. interfaces that do not display Appropriate Legal Notices, your work
  378. need not make them do so.
  379. .RE
  380. .RS 4
  381. .Sp
  382. A compilation of a covered work with other separate and independent
  383. works, which are not by their nature extensions of the covered work,
  384. and which are not combined with it such as to form a larger program,
  385. in or on a volume of a storage or distribution medium, is called an
  386. \&\*(L"aggregate\*(R" if the compilation and its resulting copyright are not
  387. used to limit the access or legal rights of the compilation's users
  388. beyond what the individual works permit. Inclusion of a covered work
  389. in an aggregate does not cause this License to apply to the other
  390. parts of the aggregate.
  391. .RE
  392. .IP "6. Conveying Non-Source Forms." 4
  393. .IX Item "6. Conveying Non-Source Forms."
  394. You may convey a covered work in object code form under the terms of
  395. sections 4 and 5, provided that you also convey the machine-readable
  396. Corresponding Source under the terms of this License, in one of these
  397. ways:
  398. .RS 4
  399. .IP "a." 4
  400. .IX Item "a."
  401. Convey the object code in, or embodied in, a physical product
  402. (including a physical distribution medium), accompanied by the
  403. Corresponding Source fixed on a durable physical medium customarily
  404. used for software interchange.
  405. .IP "b." 4
  406. .IX Item "b."
  407. Convey the object code in, or embodied in, a physical product
  408. (including a physical distribution medium), accompanied by a written
  409. offer, valid for at least three years and valid for as long as you
  410. offer spare parts or customer support for that product model, to give
  411. anyone who possesses the object code either (1) a copy of the
  412. Corresponding Source for all the software in the product that is
  413. covered by this License, on a durable physical medium customarily used
  414. for software interchange, for a price no more than your reasonable
  415. cost of physically performing this conveying of source, or (2) access
  416. to copy the Corresponding Source from a network server at no charge.
  417. .IP "c." 4
  418. .IX Item "c."
  419. Convey individual copies of the object code with a copy of the written
  420. offer to provide the Corresponding Source. This alternative is
  421. allowed only occasionally and noncommercially, and only if you
  422. received the object code with such an offer, in accord with subsection
  423. 6b.
  424. .IP "d." 4
  425. .IX Item "d."
  426. Convey the object code by offering access from a designated place
  427. (gratis or for a charge), and offer equivalent access to the
  428. Corresponding Source in the same way through the same place at no
  429. further charge. You need not require recipients to copy the
  430. Corresponding Source along with the object code. If the place to copy
  431. the object code is a network server, the Corresponding Source may be
  432. on a different server (operated by you or a third party) that supports
  433. equivalent copying facilities, provided you maintain clear directions
  434. next to the object code saying where to find the Corresponding Source.
  435. Regardless of what server hosts the Corresponding Source, you remain
  436. obligated to ensure that it is available for as long as needed to
  437. satisfy these requirements.
  438. .IP "e." 4
  439. .IX Item "e."
  440. Convey the object code using peer-to-peer transmission, provided you
  441. inform other peers where the object code and Corresponding Source of
  442. the work are being offered to the general public at no charge under
  443. subsection 6d.
  444. .RE
  445. .RS 4
  446. .Sp
  447. A separable portion of the object code, whose source code is excluded
  448. from the Corresponding Source as a System Library, need not be
  449. included in conveying the object code work.
  450. .Sp
  451. A \*(L"User Product\*(R" is either (1) a \*(L"consumer product\*(R", which means any
  452. tangible personal property which is normally used for personal,
  453. family, or household purposes, or (2) anything designed or sold for
  454. incorporation into a dwelling. In determining whether a product is a
  455. consumer product, doubtful cases shall be resolved in favor of
  456. coverage. For a particular product received by a particular user,
  457. \&\*(L"normally used\*(R" refers to a typical or common use of that class of
  458. product, regardless of the status of the particular user or of the way
  459. in which the particular user actually uses, or expects or is expected
  460. to use, the product. A product is a consumer product regardless of
  461. whether the product has substantial commercial, industrial or
  462. non-consumer uses, unless such uses represent the only significant
  463. mode of use of the product.
  464. .Sp
  465. \&\*(L"Installation Information\*(R" for a User Product means any methods,
  466. procedures, authorization keys, or other information required to
  467. install and execute modified versions of a covered work in that User
  468. Product from a modified version of its Corresponding Source. The
  469. information must suffice to ensure that the continued functioning of
  470. the modified object code is in no case prevented or interfered with
  471. solely because modification has been made.
  472. .Sp
  473. If you convey an object code work under this section in, or with, or
  474. specifically for use in, a User Product, and the conveying occurs as
  475. part of a transaction in which the right of possession and use of the
  476. User Product is transferred to the recipient in perpetuity or for a
  477. fixed term (regardless of how the transaction is characterized), the
  478. Corresponding Source conveyed under this section must be accompanied
  479. by the Installation Information. But this requirement does not apply
  480. if neither you nor any third party retains the ability to install
  481. modified object code on the User Product (for example, the work has
  482. been installed in \s-1ROM\s0).
  483. .Sp
  484. The requirement to provide Installation Information does not include a
  485. requirement to continue to provide support service, warranty, or
  486. updates for a work that has been modified or installed by the
  487. recipient, or for the User Product in which it has been modified or
  488. installed. Access to a network may be denied when the modification
  489. itself materially and adversely affects the operation of the network
  490. or violates the rules and protocols for communication across the
  491. network.
  492. .Sp
  493. Corresponding Source conveyed, and Installation Information provided,
  494. in accord with this section must be in a format that is publicly
  495. documented (and with an implementation available to the public in
  496. source code form), and must require no special password or key for
  497. unpacking, reading or copying.
  498. .RE
  499. .IP "7. Additional Terms." 4
  500. .IX Item "7. Additional Terms."
  501. \&\*(L"Additional permissions\*(R" are terms that supplement the terms of this
  502. License by making exceptions from one or more of its conditions.
  503. Additional permissions that are applicable to the entire Program shall
  504. be treated as though they were included in this License, to the extent
  505. that they are valid under applicable law. If additional permissions
  506. apply only to part of the Program, that part may be used separately
  507. under those permissions, but the entire Program remains governed by
  508. this License without regard to the additional permissions.
  509. .Sp
  510. When you convey a copy of a covered work, you may at your option
  511. remove any additional permissions from that copy, or from any part of
  512. it. (Additional permissions may be written to require their own
  513. removal in certain cases when you modify the work.) You may place
  514. additional permissions on material, added by you to a covered work,
  515. for which you have or can give appropriate copyright permission.
  516. .Sp
  517. Notwithstanding any other provision of this License, for material you
  518. add to a covered work, you may (if authorized by the copyright holders
  519. of that material) supplement the terms of this License with terms:
  520. .RS 4
  521. .IP "a." 4
  522. .IX Item "a."
  523. Disclaiming warranty or limiting liability differently from the terms
  524. of sections 15 and 16 of this License; or
  525. .IP "b." 4
  526. .IX Item "b."
  527. Requiring preservation of specified reasonable legal notices or author
  528. attributions in that material or in the Appropriate Legal Notices
  529. displayed by works containing it; or
  530. .IP "c." 4
  531. .IX Item "c."
  532. Prohibiting misrepresentation of the origin of that material, or
  533. requiring that modified versions of such material be marked in
  534. reasonable ways as different from the original version; or
  535. .IP "d." 4
  536. .IX Item "d."
  537. Limiting the use for publicity purposes of names of licensors or
  538. authors of the material; or
  539. .IP "e." 4
  540. .IX Item "e."
  541. Declining to grant rights under trademark law for use of some trade
  542. names, trademarks, or service marks; or
  543. .IP "f." 4
  544. .IX Item "f."
  545. Requiring indemnification of licensors and authors of that material by
  546. anyone who conveys the material (or modified versions of it) with
  547. contractual assumptions of liability to the recipient, for any
  548. liability that these contractual assumptions directly impose on those
  549. licensors and authors.
  550. .RE
  551. .RS 4
  552. .Sp
  553. All other non-permissive additional terms are considered \*(L"further
  554. restrictions\*(R" within the meaning of section 10. If the Program as you
  555. received it, or any part of it, contains a notice stating that it is
  556. governed by this License along with a term that is a further
  557. restriction, you may remove that term. If a license document contains
  558. a further restriction but permits relicensing or conveying under this
  559. License, you may add to a covered work material governed by the terms
  560. of that license document, provided that the further restriction does
  561. not survive such relicensing or conveying.
  562. .Sp
  563. If you add terms to a covered work in accord with this section, you
  564. must place, in the relevant source files, a statement of the
  565. additional terms that apply to those files, or a notice indicating
  566. where to find the applicable terms.
  567. .Sp
  568. Additional terms, permissive or non-permissive, may be stated in the
  569. form of a separately written license, or stated as exceptions; the
  570. above requirements apply either way.
  571. .RE
  572. .IP "8. Termination." 4
  573. .IX Item "8. Termination."
  574. You may not propagate or modify a covered work except as expressly
  575. provided under this License. Any attempt otherwise to propagate or
  576. modify it is void, and will automatically terminate your rights under
  577. this License (including any patent licenses granted under the third
  578. paragraph of section 11).
  579. .Sp
  580. However, if you cease all violation of this License, then your license
  581. from a particular copyright holder is reinstated (a) provisionally,
  582. unless and until the copyright holder explicitly and finally
  583. terminates your license, and (b) permanently, if the copyright holder
  584. fails to notify you of the violation by some reasonable means prior to
  585. 60 days after the cessation.
  586. .Sp
  587. Moreover, your license from a particular copyright holder is
  588. reinstated permanently if the copyright holder notifies you of the
  589. violation by some reasonable means, this is the first time you have
  590. received notice of violation of this License (for any work) from that
  591. copyright holder, and you cure the violation prior to 30 days after
  592. your receipt of the notice.
  593. .Sp
  594. Termination of your rights under this section does not terminate the
  595. licenses of parties who have received copies or rights from you under
  596. this License. If your rights have been terminated and not permanently
  597. reinstated, you do not qualify to receive new licenses for the same
  598. material under section 10.
  599. .IP "9. Acceptance Not Required for Having Copies." 4
  600. .IX Item "9. Acceptance Not Required for Having Copies."
  601. You are not required to accept this License in order to receive or run
  602. a copy of the Program. Ancillary propagation of a covered work
  603. occurring solely as a consequence of using peer-to-peer transmission
  604. to receive a copy likewise does not require acceptance. However,
  605. nothing other than this License grants you permission to propagate or
  606. modify any covered work. These actions infringe copyright if you do
  607. not accept this License. Therefore, by modifying or propagating a
  608. covered work, you indicate your acceptance of this License to do so.
  609. .IP "10. Automatic Licensing of Downstream Recipients." 4
  610. .IX Item "10. Automatic Licensing of Downstream Recipients."
  611. Each time you convey a covered work, the recipient automatically
  612. receives a license from the original licensors, to run, modify and
  613. propagate that work, subject to this License. You are not responsible
  614. for enforcing compliance by third parties with this License.
  615. .Sp
  616. An \*(L"entity transaction\*(R" is a transaction transferring control of an
  617. organization, or substantially all assets of one, or subdividing an
  618. organization, or merging organizations. If propagation of a covered
  619. work results from an entity transaction, each party to that
  620. transaction who receives a copy of the work also receives whatever
  621. licenses to the work the party's predecessor in interest had or could
  622. give under the previous paragraph, plus a right to possession of the
  623. Corresponding Source of the work from the predecessor in interest, if
  624. the predecessor has it or can get it with reasonable efforts.
  625. .Sp
  626. You may not impose any further restrictions on the exercise of the
  627. rights granted or affirmed under this License. For example, you may
  628. not impose a license fee, royalty, or other charge for exercise of
  629. rights granted under this License, and you may not initiate litigation
  630. (including a cross-claim or counterclaim in a lawsuit) alleging that
  631. any patent claim is infringed by making, using, selling, offering for
  632. sale, or importing the Program or any portion of it.
  633. .IP "11. Patents." 4
  634. .IX Item "11. Patents."
  635. A \*(L"contributor\*(R" is a copyright holder who authorizes use under this
  636. License of the Program or a work on which the Program is based. The
  637. work thus licensed is called the contributor's \*(L"contributor version\*(R".
  638. .Sp
  639. A contributor's \*(L"essential patent claims\*(R" are all patent claims owned
  640. or controlled by the contributor, whether already acquired or
  641. hereafter acquired, that would be infringed by some manner, permitted
  642. by this License, of making, using, or selling its contributor version,
  643. but do not include claims that would be infringed only as a
  644. consequence of further modification of the contributor version. For
  645. purposes of this definition, \*(L"control\*(R" includes the right to grant
  646. patent sublicenses in a manner consistent with the requirements of
  647. this License.
  648. .Sp
  649. Each contributor grants you a non-exclusive, worldwide, royalty-free
  650. patent license under the contributor's essential patent claims, to
  651. make, use, sell, offer for sale, import and otherwise run, modify and
  652. propagate the contents of its contributor version.
  653. .Sp
  654. In the following three paragraphs, a \*(L"patent license\*(R" is any express
  655. agreement or commitment, however denominated, not to enforce a patent
  656. (such as an express permission to practice a patent or covenant not to
  657. sue for patent infringement). To \*(L"grant\*(R" such a patent license to a
  658. party means to make such an agreement or commitment not to enforce a
  659. patent against the party.
  660. .Sp
  661. If you convey a covered work, knowingly relying on a patent license,
  662. and the Corresponding Source of the work is not available for anyone
  663. to copy, free of charge and under the terms of this License, through a
  664. publicly available network server or other readily accessible means,
  665. then you must either (1) cause the Corresponding Source to be so
  666. available, or (2) arrange to deprive yourself of the benefit of the
  667. patent license for this particular work, or (3) arrange, in a manner
  668. consistent with the requirements of this License, to extend the patent
  669. license to downstream recipients. \*(L"Knowingly relying\*(R" means you have
  670. actual knowledge that, but for the patent license, your conveying the
  671. covered work in a country, or your recipient's use of the covered work
  672. in a country, would infringe one or more identifiable patents in that
  673. country that you have reason to believe are valid.
  674. .Sp
  675. If, pursuant to or in connection with a single transaction or
  676. arrangement, you convey, or propagate by procuring conveyance of, a
  677. covered work, and grant a patent license to some of the parties
  678. receiving the covered work authorizing them to use, propagate, modify
  679. or convey a specific copy of the covered work, then the patent license
  680. you grant is automatically extended to all recipients of the covered
  681. work and works based on it.
  682. .Sp
  683. A patent license is \*(L"discriminatory\*(R" if it does not include within the
  684. scope of its coverage, prohibits the exercise of, or is conditioned on
  685. the non-exercise of one or more of the rights that are specifically
  686. granted under this License. You may not convey a covered work if you
  687. are a party to an arrangement with a third party that is in the
  688. business of distributing software, under which you make payment to the
  689. third party based on the extent of your activity of conveying the
  690. work, and under which the third party grants, to any of the parties
  691. who would receive the covered work from you, a discriminatory patent
  692. license (a) in connection with copies of the covered work conveyed by
  693. you (or copies made from those copies), or (b) primarily for and in
  694. connection with specific products or compilations that contain the
  695. covered work, unless you entered into that arrangement, or that patent
  696. license was granted, prior to 28 March 2007.
  697. .Sp
  698. Nothing in this License shall be construed as excluding or limiting
  699. any implied license or other defenses to infringement that may
  700. otherwise be available to you under applicable patent law.
  701. .IP "12. No Surrender of Others' Freedom." 4
  702. .IX Item "12. No Surrender of Others' Freedom."
  703. If conditions are imposed on you (whether by court order, agreement or
  704. otherwise) that contradict the conditions of this License, they do not
  705. excuse you from the conditions of this License. If you cannot convey
  706. a covered work so as to satisfy simultaneously your obligations under
  707. this License and any other pertinent obligations, then as a
  708. consequence you may not convey it at all. For example, if you agree
  709. to terms that obligate you to collect a royalty for further conveying
  710. from those to whom you convey the Program, the only way you could
  711. satisfy both those terms and this License would be to refrain entirely
  712. from conveying the Program.
  713. .IP "13. Use with the \s-1GNU\s0 Affero General Public License." 4
  714. .IX Item "13. Use with the GNU Affero General Public License."
  715. Notwithstanding any other provision of this License, you have
  716. permission to link or combine any covered work with a work licensed
  717. under version 3 of the \s-1GNU\s0 Affero General Public License into a single
  718. combined work, and to convey the resulting work. The terms of this
  719. License will continue to apply to the part which is the covered work,
  720. but the special requirements of the \s-1GNU\s0 Affero General Public License,
  721. section 13, concerning interaction through a network will apply to the
  722. combination as such.
  723. .IP "14. Revised Versions of this License." 4
  724. .IX Item "14. Revised Versions of this License."
  725. The Free Software Foundation may publish revised and/or new versions
  726. of the \s-1GNU\s0 General Public License from time to time. Such new
  727. versions will be similar in spirit to the present version, but may
  728. differ in detail to address new problems or concerns.
  729. .Sp
  730. Each version is given a distinguishing version number. If the Program
  731. specifies that a certain numbered version of the \s-1GNU\s0 General Public
  732. License \*(L"or any later version\*(R" applies to it, you have the option of
  733. following the terms and conditions either of that numbered version or
  734. of any later version published by the Free Software Foundation. If
  735. the Program does not specify a version number of the \s-1GNU\s0 General
  736. Public License, you may choose any version ever published by the Free
  737. Software Foundation.
  738. .Sp
  739. If the Program specifies that a proxy can decide which future versions
  740. of the \s-1GNU\s0 General Public License can be used, that proxy's public
  741. statement of acceptance of a version permanently authorizes you to
  742. choose that version for the Program.
  743. .Sp
  744. Later license versions may give you additional or different
  745. permissions. However, no additional obligations are imposed on any
  746. author or copyright holder as a result of your choosing to follow a
  747. later version.
  748. .IP "15. Disclaimer of Warranty." 4
  749. .IX Item "15. Disclaimer of Warranty."
  750. \&\s-1THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
  751. APPLICABLE LAW.\s0 \s-1EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
  752. HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM \*(L"AS IS\*(R" WITHOUT
  753. WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT
  754. LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  755. A PARTICULAR PURPOSE.\s0 \s-1THE ENTIRE RISK AS TO THE QUALITY AND
  756. PERFORMANCE OF THE PROGRAM IS WITH YOU.\s0 \s-1SHOULD THE PROGRAM PROVE
  757. DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
  758. CORRECTION.\s0
  759. .IP "16. Limitation of Liability." 4
  760. .IX Item "16. Limitation of Liability."
  761. \&\s-1IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
  762. WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR
  763. CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
  764. INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
  765. ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM\s0 (\s-1INCLUDING BUT
  766. NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR
  767. LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM
  768. TO OPERATE WITH ANY OTHER PROGRAMS\s0), \s-1EVEN IF SUCH HOLDER OR OTHER
  769. PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.\s0
  770. .IP "17. Interpretation of Sections 15 and 16." 4
  771. .IX Item "17. Interpretation of Sections 15 and 16."
  772. If the disclaimer of warranty and limitation of liability provided
  773. above cannot be given local legal effect according to their terms,
  774. reviewing courts shall apply local law that most closely approximates
  775. an absolute waiver of all civil liability in connection with the
  776. Program, unless a warranty or assumption of liability accompanies a
  777. copy of the Program in return for a fee.
  778. .SS "\s-1END OF TERMS AND CONDITIONS\s0"
  779. .IX Subsection "END OF TERMS AND CONDITIONS"
  780. .SS "How to Apply These Terms to Your New Programs"
  781. .IX Subsection "How to Apply These Terms to Your New Programs"
  782. If you develop a new program, and you want it to be of the greatest
  783. possible use to the public, the best way to achieve this is to make it
  784. free software which everyone can redistribute and change under these
  785. terms.
  786. .PP
  787. To do so, attach the following notices to the program. It is safest
  788. to attach them to the start of each source file to most effectively
  789. state the exclusion of warranty; and each file should have at least
  790. the \*(L"copyright\*(R" line and a pointer to where the full notice is found.
  791. .PP
  792. .Vb 2
  793. \& <one line to give the program\*(Aqs name and a brief idea of what it does.>
  794. \& Copyright (C) <year> <name of author>
  795. \&
  796. \& This program is free software: you can redistribute it and/or modify
  797. \& it under the terms of the GNU General Public License as published by
  798. \& the Free Software Foundation, either version 3 of the License, or (at
  799. \& your option) any later version.
  800. \&
  801. \& This program is distributed in the hope that it will be useful, but
  802. \& WITHOUT ANY WARRANTY; without even the implied warranty of
  803. \& MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  804. \& General Public License for more details.
  805. \&
  806. \& You should have received a copy of the GNU General Public License
  807. \& along with this program. If not, see <http://www.gnu.org/licenses/>.
  808. .Ve
  809. .PP
  810. Also add information on how to contact you by electronic and paper mail.
  811. .PP
  812. If the program does terminal interaction, make it output a short
  813. notice like this when it starts in an interactive mode:
  814. .PP
  815. .Vb 4
  816. \& <program> Copyright (C) <year> <name of author>
  817. \& This program comes with ABSOLUTELY NO WARRANTY; for details type "show w".
  818. \& This is free software, and you are welcome to redistribute it
  819. \& under certain conditions; type "show c" for details.
  820. .Ve
  821. .PP
  822. The hypothetical commands \fBshow w\fR and \fBshow c\fR should show
  823. the appropriate parts of the General Public License. Of course, your
  824. program's commands might be different; for a \s-1GUI\s0 interface, you would
  825. use an \*(L"about box\*(R".
  826. .PP
  827. You should also get your employer (if you work as a programmer) or school,
  828. if any, to sign a \*(L"copyright disclaimer\*(R" for the program, if necessary.
  829. For more information on this, and how to apply and follow the \s-1GNU GPL,\s0 see
  830. <\fBhttp://www.gnu.org/licenses/\fR>.
  831. .PP
  832. The \s-1GNU\s0 General Public License does not permit incorporating your
  833. program into proprietary programs. If your program is a subroutine
  834. library, you may consider it more useful to permit linking proprietary
  835. applications with the library. If this is what you want to do, use
  836. the \s-1GNU\s0 Lesser General Public License instead of this License. But
  837. first, please read <\fBhttps://www.gnu.org/licenses/why\-not\-lgpl.html\fR>.
  838. .SH "SEE ALSO"
  839. .IX Header "SEE ALSO"
  840. \&\fIgfdl\fR\|(7), \fIfsf\-funding\fR\|(7).
  841. .SH "COPYRIGHT"
  842. .IX Header "COPYRIGHT"
  843. Copyright (c) 2007 Free Software Foundation, Inc.
  844. .PP
  845. Everyone is permitted to copy and distribute verbatim copies of this
  846. license document, but changing it is not allowed.