1 <?xml version="1.0" encoding="UTF-8" standalone="no"?> 2 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>AppendixD. GNU General Public License version 3</title><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /><meta name="keywords" content="ISO C++, runtime, library" /><link rel="home" href="../index.html" title="The GNU C++ Library" /><link rel="up" href="appendix.html" title="PartIV. Appendices" /><link rel="prev" href="appendix_free.html" title="AppendixC. Free Software Needs Free Documentation" /><link rel="next" href="appendix_gfdl.html" title="AppendixE.GNU Free Documentation License" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">AppendixD. 3 <acronym class="acronym">GNU</acronym> General Public License version 3 4 </th></tr><tr><td width="20%" align="left"><a accesskey="p" href="appendix_free.html">Prev</a></td><th width="60%" align="center">PartIV. 5 Appendices 6 </th><td width="20%" align="right"><a accesskey="n" href="appendix_gfdl.html">Next</a></td></tr></table><hr /></div><div class="appendix"><div class="titlepage"><div><div><h1 class="title"><a id="appendix.gpl-3.0"></a> 7 <acronym class="acronym">GNU</acronym> General Public License version 3 8 </h1></div></div></div><p> 9 Version 3, 29 June 2007 10 </p><p> 11 Copyright 2007 Free Software Foundation, Inc. 12 <a class="link" href="https://www.fsf.org" target="_top">https://www.fsf.org</a> 13 </p><p> 14 Everyone is permitted to copy and distribute verbatim copies of this license 15 document, but changing it is not allowed. 16 </p><h2><a id="gpl-3-preamble"></a> 17 Preamble 18 </h2><p> 19 The <acronym class="acronym">GNU</acronym> General Public License is a free, copyleft 20 license for software and other kinds of works. 21 </p><p> 22 The licenses for most software and other practical works are designed to 23 take away your freedom to share and change the works. By contrast, the 24 <acronym class="acronym">GNU</acronym> General Public License is intended to guarantee your 25 freedom to share and change all versions of a programto make sure it 26 remains free software for all its users. We, the Free Software Foundation, 27 use the <acronym class="acronym">GNU</acronym> General Public License for most of our 28 software; it applies also to any other work released this way by its 29 authors. You can apply it to your programs, too. 30 </p><p> 31 When we speak of free software, we are referring to freedom, not price. Our 32 General Public Licenses are designed to make sure that you have the freedom 33 to distribute copies of free software (and charge for them if you wish), 34 that you receive source code or can get it if you want it, that you can 35 change the software or use pieces of it in new free programs, and that you 36 know you can do these things. 37 </p><p> 38 To protect your rights, we need to prevent others from denying you these 39 rights or asking you to surrender the rights. Therefore, you have certain 40 responsibilities if you distribute copies of the software, or if you modify 41 it: responsibilities to respect the freedom of others. 42 </p><p> 43 For example, if you distribute copies of such a program, whether gratis or 44 for a fee, you must pass on to the recipients the same freedoms that you 45 received. You must make sure that they, too, receive or can get the source 46 code. And you must show them these terms so they know their rights. 47 </p><p> 48 Developers that use the <acronym class="acronym">GNU</acronym> <acronym class="acronym">GPL</acronym> 49 protect your rights with two steps: (1) assert copyright on the software, 50 and (2) offer you this License giving you legal permission to copy, 51 distribute and/or modify it. 52 </p><p> 53 For the developers and authors protection, the 54 <acronym class="acronym">GPL</acronym> clearly explains that there is no warranty for this 55 free software. For both users and authors sake, the 56 <acronym class="acronym">GPL</acronym> requires that modified versions be marked as changed, 57 so that their problems will not be attributed erroneously to authors of 58 previous versions. 59 </p><p> 60 Some devices are designed to deny users access to install or run modified 61 versions of the software inside them, although the manufacturer can do so. 62 This is fundamentally incompatible with the aim of protecting users 63 freedom to change the software. The systematic pattern of such abuse occurs 64 in the area of products for individuals to use, which is precisely where it 65 is most unacceptable. Therefore, we have designed this version of the 66 <acronym class="acronym">GPL</acronym> to prohibit the practice for those products. If such 67 problems arise substantially in other domains, we stand ready to extend this 68 provision to those domains in future versions of the <acronym class="acronym">GPL</acronym>, 69 as needed to protect the freedom of users. 70 </p><p> 71 Finally, every program is threatened constantly by software patents. States 72 should not allow patents to restrict development and use of software on 73 general-purpose computers, but in those that do, we wish to avoid the 74 special danger that patents applied to a free program could make it 75 effectively proprietary. To prevent this, the <acronym class="acronym">GPL</acronym> 76 assures that patents cannot be used to render the program non-free. 77 </p><p> 78 The precise terms and conditions for copying, distribution and modification 79 follow. 80 </p><h2><a id="id-1.3.6.5.16"></a> 81 TERMS AND CONDITIONS 82 </h2><h2><a id="gpl-3-definitions"></a> 83 0. Definitions. 84 </h2><p> 85 This License refers to version 3 of the <acronym class="acronym">GNU</acronym> 86 General Public License. 87 </p><p> 88 Copyright also means copyright-like laws that apply to other 89 kinds of works, such as semiconductor masks. 90 </p><p> 91 The Program refers to any copyrightable work licensed under 92 this License. Each licensee is addressed as you. 93 Licensees and recipients may be individuals or 94 organizations. 95 </p><p> 96 To modify a work means to copy from or adapt all or part of 97 the work in a fashion requiring copyright permission, other than the making 98 of an exact copy. The resulting work is called a modified 99 version of the earlier work or a work based on the 100 earlier work. 101 </p><p> 102 A covered work means either the unmodified Program or a work 103 based on the Program. 104 </p><p> 105 To propagate a work means to do anything with it that, without 106 permission, would make you directly or secondarily liable for infringement 107 under applicable copyright law, except executing it on a computer or 108 modifying a private copy. Propagation includes copying, distribution (with 109 or without modification), making available to the public, and in some 110 countries other activities as well. 111 </p><p> 112 To convey a work means any kind of propagation that enables 113 other parties to make or receive copies. Mere interaction with a user 114 through a computer network, with no transfer of a copy, is not conveying. 115 </p><p> 116 An interactive user interface displays Appropriate Legal 117 Notices to the extent that it includes a convenient and prominently 118 visible feature that (1) displays an appropriate copyright notice, and (2) 119 tells the user that there is no warranty for the work (except to the extent 120 that warranties are provided), that licensees may convey the work under this 121 License, and how to view a copy of this License. If the interface presents 122 a list of user commands or options, such as a menu, a prominent item in the 123 list meets this criterion. 124 </p><h2><a id="SourceCode"></a> 125 1. Source Code. 126 </h2><p> 127 The source code for a work means the preferred form of the 128 work for making modifications to it. Object code means any 129 non-source form of a work. 130 </p><p> 131 A Standard Interface means an interface that either is an 132 official standard defined by a recognized standards body, or, in the case of 133 interfaces specified for a particular programming language, one that is 134 widely used among developers working in that language. 135 </p><p> 136 The System Libraries of an executable work include anything, 137 other than the work as a whole, that (a) is included in the normal form of 138 packaging a Major Component, but which is not part of that Major Component, 139 and (b) serves only to enable use of the work with that Major Component, or 140 to implement a Standard Interface for which an implementation is available 141 to the public in source code form. A Major Component, in this 142 context, means a major essential component (kernel, window system, and so 143 on) of the specific operating system (if any) on which the executable work 144 runs, or a compiler used to produce the work, or an object code interpreter 145 used to run it. 146 </p><p> 147 The Corresponding Source for a work in object code form means 148 all the source code needed to generate, install, and (for an executable 149 work) run the object code and to modify the work, including scripts to 150 control those activities. However, it does not include the works 151 System Libraries, or general-purpose tools or generally available free 152 programs which are used unmodified in performing those activities but which 153 are not part of the work. For example, Corresponding Source includes 154 interface definition files associated with source files for the work, and 155 the source code for shared libraries and dynamically linked subprograms that 156 the work is specifically designed to require, such as by intimate data 157 communication or control flow between those subprograms and other parts of 158 the work. 159 </p><p> 160 The Corresponding Source need not include anything that users can regenerate 161 automatically from other parts of the Corresponding Source. 162 </p><p> 163 The Corresponding Source for a work in source code form is that same work. 164 </p><h2><a id="BasicPermissions"></a> 165 2. Basic Permissions. 166 </h2><p> 167 All rights granted under this License are granted for the term of copyright 168 on the Program, and are irrevocable provided the stated conditions are met. 169 This License explicitly affirms your unlimited permission to run the 170 unmodified Program. The output from running a covered work is covered by 171 this License only if the output, given its content, constitutes a covered 172 work. This License acknowledges your rights of fair use or other 173 equivalent, as provided by copyright law. 174 </p><p> 175 You may make, run and propagate covered works that you do not convey, 176 without conditions so long as your license otherwise remains in force. You 177 may convey covered works to others for the sole purpose of having them make 178 modifications exclusively for you, or provide you with facilities for 179 running those works, provided that you comply with the terms of this License 180 in conveying all material for which you do not control copyright. Those 181 thus making or running the covered works for you must do so exclusively on 182 your behalf, under your direction and control, on terms that prohibit them 183 from making any copies of your copyrighted material outside their 184 relationship with you. 185 </p><p> 186 Conveying under any other circumstances is permitted solely under the 187 conditions stated below. Sublicensing is not allowed; section 10 makes it 188 unnecessary. 189 </p><h2><a id="Protecting"></a> 190 3. Protecting Users Legal Rights From Anti-Circumvention Law. 191 </h2><p> 192 No covered work shall be deemed part of an effective technological measure 193 under any applicable law fulfilling obligations under article 11 of the WIPO 194 copyright treaty adopted on 20 December 1996, or similar laws prohibiting or 195 restricting circumvention of such measures. 196 </p><p> 197 When you convey a covered work, you waive any legal power to forbid 198 circumvention of technological measures to the extent such circumvention is 199 effected by exercising rights under this License with respect to the covered 200 work, and you disclaim any intention to limit operation or modification of 201 the work as a means of enforcing, against the works users, your or 202 third parties legal rights to forbid circumvention of technological 203 measures. 204 </p><h2><a id="ConveyingVerbatim"></a> 205 4. Conveying Verbatim Copies. 206 </h2><p> 207 You may convey verbatim copies of the Programs source code as you 208 receive it, in any medium, provided that you conspicuously and appropriately 209 publish on each copy an appropriate copyright notice; keep intact all 210 notices stating that this License and any non-permissive terms added in 211 accord with section 7 apply to the code; keep intact all notices of the 212 absence of any warranty; and give all recipients a copy of this License 213 along with the Program. 214 </p><p> 215 You may charge any price or no price for each copy that you convey, and you 216 may offer support or warranty protection for a fee. 217 </p><h2><a id="ConveyingModified"></a> 218 5. Conveying Modified Source Versions. 219 </h2><p> 220 You may convey a work based on the Program, or the modifications to produce 221 it from the Program, in the form of source code under the terms of section 222 4, provided that you also meet all of these conditions: 223 </p><div class="orderedlist"><ol class="orderedlist" type="a"><li class="listitem"><p> 224 The work must carry prominent notices stating that you modified it, and 225 giving a relevant date. 226 </p></li><li class="listitem"><p> 227 The work must carry prominent notices stating that it is released under 228 this License and any conditions added under section 7. This requirement 229 modifies the requirement in section 4 to keep intact all 230 notices. 231 </p></li><li class="listitem"><p> 232 You must license the entire work, as a whole, under this License to 233 anyone who comes into possession of a copy. This License will therefore 234 apply, along with any applicable section 7 additional terms, to the 235 whole of the work, and all its parts, regardless of how they are 236 packaged. This License gives no permission to license the work in any 237 other way, but it does not invalidate such permission if you have 238 separately received it. 239 </p></li><li class="listitem"><p> 240 If the work has interactive user interfaces, each must display 241 Appropriate Legal Notices; however, if the Program has interactive 242 interfaces that do not display Appropriate Legal Notices, your work need 243 not make them do so. 244 </p></li></ol></div><p> 245 A compilation of a covered work with other separate and independent works, 246 which are not by their nature extensions of the covered work, and which are 247 not combined with it such as to form a larger program, in or on a volume of 248 a storage or distribution medium, is called an aggregate if 249 the compilation and its resulting copyright are not used to limit the access 250 or legal rights of the compilations users beyond what the individual works 251 permit. Inclusion of a covered work in an aggregate does not cause 252 this License to apply to the other parts of the aggregate. 253 </p><h2><a id="ConveyingNonSource"></a> 254 6. Conveying Non-Source Forms. 255 </h2><p> 256 You may convey a covered work in object code form under the terms of 257 sections 4 and 5, provided that you also convey the machine-readable 258 Corresponding Source under the terms of this License, in one of these ways: 259 </p><div class="orderedlist"><ol class="orderedlist" type="a"><li class="listitem"><p> 260 Convey the object code in, or embodied in, a physical product (including 261 a physical distribution medium), accompanied by the Corresponding Source 262 fixed on a durable physical medium customarily used for software 263 interchange. 264 </p></li><li class="listitem"><p> 265 Convey the object code in, or embodied in, a physical product (including 266 a physical distribution medium), accompanied by a written offer, valid 267 for at least three years and valid for as long as you offer spare parts 268 or customer support for that product model, to give anyone who possesses 269 the object code either (1) a copy of the Corresponding Source for all 270 the software in the product that is covered by this License, on a 271 durable physical medium customarily used for software interchange, for a 272 price no more than your reasonable cost of physically performing this 273 conveying of source, or (2) access to copy the Corresponding Source from 274 a network server at no charge. 275 </p></li><li class="listitem"><p> 276 Convey individual copies of the object code with a copy of the written 277 offer to provide the Corresponding Source. This alternative is allowed 278 only occasionally and noncommercially, and only if you received the 279 object code with such an offer, in accord with subsection 6b. 280 </p></li><li class="listitem"><p> 281 Convey the object code by offering access from a designated place 282 (gratis or for a charge), and offer equivalent access to the 283 Corresponding Source in the same way through the same place at no 284 further charge. You need not require recipients to copy the 285 Corresponding Source along with the object code. If the place to copy 286 the object code is a network server, the Corresponding Source may be on 287 a different server (operated by you or a third party) that supports 288 equivalent copying facilities, provided you maintain clear directions 289 next to the object code saying where to find the Corresponding Source. 290 Regardless of what server hosts the Corresponding Source, you remain 291 obligated to ensure that it is available for as long as needed to 292 satisfy these requirements. 293 </p></li><li class="listitem"><p> 294 Convey the object code using peer-to-peer transmission, provided you 295 inform other peers where the object code and Corresponding Source of the 296 work are being offered to the general public at no charge under 297 subsection 6d. 298 </p></li></ol></div><p> 299 A separable portion of the object code, whose source code is excluded from 300 the Corresponding Source as a System Library, need not be included in 301 conveying the object code work. 302 </p><p> 303 A User Product is either (1) a consumer product, 304 which means any tangible personal property which is normally used for 305 personal, family, or household purposes, or (2) anything designed or sold 306 for incorporation into a dwelling. In determining whether a product is a 307 consumer product, doubtful cases shall be resolved in favor of coverage. 308 For a particular product received by a particular user, normally 309 used refers to a typical or common use of that class of product, 310 regardless of the status of the particular user or of the way in which the 311 particular user actually uses, or expects or is expected to use, the 312 product. A product is a consumer product regardless of whether the product 313 has substantial commercial, industrial or non-consumer uses, unless such 314 uses represent the only significant mode of use of the product. 315 </p><p> 316 Installation Information for a User Product means any methods, 317 procedures, authorization keys, or other information required to install and 318 execute modified versions of a covered work in that User Product from a 319 modified version of its Corresponding Source. The information must suffice 320 to ensure that the continued functioning of the modified object code is in 321 no case prevented or interfered with solely because modification has been 322 made. 323 </p><p> 324 If you convey an object code work under this section in, or with, or 325 specifically for use in, a User Product, and the conveying occurs as part of 326 a transaction in which the right of possession and use of the User Product 327 is transferred to the recipient in perpetuity or for a fixed term 328 (regardless of how the transaction is characterized), the Corresponding 329 Source conveyed under this section must be accompanied by the Installation 330 Information. But this requirement does not apply if neither you nor any 331 third party retains the ability to install modified object code on the User 332 Product (for example, the work has been installed in 333 <acronym class="acronym">ROM</acronym>). 334 </p><p> 335 The requirement to provide Installation Information does not include a 336 requirement to continue to provide support service, warranty, or updates for 337 a work that has been modified or installed by the recipient, or for the User 338 Product in which it has been modified or installed. Access to a network may 339 be denied when the modification itself materially and adversely affects the 340 operation of the network or violates the rules and protocols for 341 communication across the network. 342 </p><p> 343 Corresponding Source conveyed, and Installation Information provided, in 344 accord with this section must be in a format that is publicly documented 345 (and with an implementation available to the public in source code form), 346 and must require no special password or key for unpacking, reading or 347 copying. 348 </p><h2><a id="AdditionalTerms"></a> 349 7. Additional Terms. 350 </h2><p> 351 Additional permissions are terms that supplement the terms of 352 this License by making exceptions from one or more of its conditions. 353 Additional permissions that are applicable to the entire Program shall be 354 treated as though they were included in this License, to the extent that 355 they are valid under applicable law. If additional permissions apply only 356 to part of the Program, that part may be used separately under those 357 permissions, but the entire Program remains governed by this License 358 without regard to the additional permissions. 359 </p><p> 360 When you convey a copy of a covered work, you may at your option remove any 361 additional permissions from that copy, or from any part of it. (Additional 362 permissions may be written to require their own removal in certain cases 363 when you modify the work.) You may place additional permissions on 364 material, added by you to a covered work, for which you have or can give 365 appropriate copyright permission. 366 </p><p> 367 Notwithstanding any other provision of this License, for material you add 368 to a covered work, you may (if authorized by the copyright holders of that 369 material) supplement the terms of this License with terms: 370 </p><div class="orderedlist"><ol class="orderedlist" type="a"><li class="listitem"><p> 371 Disclaiming warranty or limiting liability differently from the terms 372 of sections 15 and 16 of this License; or 373 </p></li><li class="listitem"><p> 374 Requiring preservation of specified reasonable legal notices or author 375 attributions in that material or in the Appropriate Legal Notices 376 displayed by works containing it; or 377 </p></li><li class="listitem"><p> 378 Prohibiting misrepresentation of the origin of that material, or 379 requiring that modified versions of such material be marked in 380 reasonable ways as different from the original version; or 381 </p></li><li class="listitem"><p> 382 Limiting the use for publicity purposes of names of licensors or 383 authors of the material; or 384 </p></li><li class="listitem"><p> 385 Declining to grant rights under trademark law for use of some trade 386 names, trademarks, or service marks; or 387 </p></li><li class="listitem"><p> 388 Requiring indemnification of licensors and authors of that material by 389 anyone who conveys the material (or modified versions of it) with 390 contractual assumptions of liability to the recipient, for any 391 liability that these contractual assumptions directly impose on those 392 licensors and authors. 393 </p></li></ol></div><p> 394 All other non-permissive additional terms are considered further 395 restrictions within the meaning of section 10. If the Program as 396 you received it, or any part of it, contains a notice stating that it is 397 governed by this License along with a term that is a further restriction, 398 you may remove that term. If a license document contains a further 399 restriction but permits relicensing or conveying under this License, you 400 may add to a covered work material governed by the terms of that license 401 document, provided that the further restriction does not survive such 402 relicensing or conveying. 403 </p><p> 404 If you add terms to a covered work in accord with this section, you must 405 place, in the relevant source files, a statement of the additional terms 406 that apply to those files, or a notice indicating where to find the 407 applicable terms. 408 </p><p> 409 Additional terms, permissive or non-permissive, may be stated in the form 410 of a separately written license, or stated as exceptions; the above 411 requirements apply either way. 412 </p><h2><a id="gpl-3-termination"></a> 413 8. Termination. 414 </h2><p> 415 You may not propagate or modify a covered work except as expressly provided 416 under this License. Any attempt otherwise to propagate or modify it is 417 void, and will automatically terminate your rights under this License 418 (including any patent licenses granted under the third paragraph of section 419 11). 420 </p><p> 421 However, if you cease all violation of this License, then your license from 422 a particular copyright holder is reinstated (a) provisionally, unless and 423 until the copyright holder explicitly and finally terminates your license, 424 and (b) permanently, if the copyright holder fails to notify you of the 425 violation by some reasonable means prior to 60 days after the cessation. 426 </p><p> 427 Moreover, your license from a particular copyright holder is reinstated 428 permanently if the copyright holder notifies you of the violation by some 429 reasonable means, this is the first time you have received notice of 430 violation of this License (for any work) from that copyright holder, and 431 you cure the violation prior to 30 days after your receipt of the notice. 432 </p><p> 433 Termination of your rights under this section does not terminate the 434 licenses of parties who have received copies or rights from you under this 435 License. If your rights have been terminated and not permanently 436 reinstated, you do not qualify to receive new licenses for the same 437 material under section 10. 438 </p><h2><a id="AcceptanceNotRequired"></a> 439 9. Acceptance Not Required for Having Copies. 440 </h2><p> 441 You are not required to accept this License in order to receive or run a 442 copy of the Program. Ancillary propagation of a covered work occurring 443 solely as a consequence of using peer-to-peer transmission to receive a 444 copy likewise does not require acceptance. However, nothing other than 445 this License grants you permission to propagate or modify any covered work. 446 These actions infringe copyright if you do not accept this License. 447 Therefore, by modifying or propagating a covered work, you indicate your 448 acceptance of this License to do so. 449 </p><h2><a id="AutomaticDownstream"></a> 450 10. Automatic Licensing of Downstream Recipients. 451 </h2><p> 452 Each time you convey a covered work, the recipient automatically receives a 453 license from the original licensors, to run, modify and propagate that 454 work, subject to this License. You are not responsible for enforcing 455 compliance by third parties with this License. 456 </p><p> 457 An entity transaction is a transaction transferring control 458 of an organization, or substantially all assets of one, or subdividing an 459 organization, or merging organizations. If propagation of a covered work 460 results from an entity transaction, each party to that transaction who 461 receives a copy of the work also receives whatever licenses to the work the 462 partys predecessor in interest had or could give under the previous 463 paragraph, plus a right to possession of the Corresponding Source of the 464 work from the predecessor in interest, if the predecessor has it or can get 465 it with reasonable efforts. 466 </p><p> 467 You may not impose any further restrictions on the exercise of the rights 468 granted or affirmed under this License. For example, you may not impose a 469 license fee, royalty, or other charge for exercise of rights granted under 470 this License, and you may not initiate litigation (including a cross-claim 471 or counterclaim in a lawsuit) alleging that any patent claim is infringed 472 by making, using, selling, offering for sale, or importing the Program or 473 any portion of it. 474 </p><h2><a id="Patents"></a> 475 11. Patents. 476 </h2><p> 477 A contributor is a copyright holder who authorizes use under 478 this License of the Program or a work on which the Program is based. The 479 work thus licensed is called the contributors contributor 480 version. 481 </p><p> 482 A contributors essential patent claims are all patent 483 claims owned or controlled by the contributor, whether already acquired or 484 hereafter acquired, that would be infringed by some manner, permitted by 485 this License, of making, using, or selling its contributor version, but do 486 not include claims that would be infringed only as a consequence of further 487 modification of the contributor version. For purposes of this definition, 488 control includes the right to grant patent sublicenses in a 489 manner consistent with the requirements of this License. 490 </p><p> 491 Each contributor grants you a non-exclusive, worldwide, royalty-free patent 492 license under the contributors essential patent claims, to make, use, 493 sell, offer for sale, import and otherwise run, modify and propagate the 494 contents of its contributor version. 495 </p><p> 496 In the following three paragraphs, a patent license is any 497 express agreement or commitment, however denominated, not to enforce a 498 patent (such as an express permission to practice a patent or covenant not 499 to sue for patent infringement). To grant such a patent 500 license to a party means to make such an agreement or commitment not to 501 enforce a patent against the party. 502 </p><p> 503 If you convey a covered work, knowingly relying on a patent license, and the 504 Corresponding Source of the work is not available for anyone to copy, free 505 of charge and under the terms of this License, through a publicly available 506 network server or other readily accessible means, then you must either (1) 507 cause the Corresponding Source to be so available, or (2) arrange to deprive 508 yourself of the benefit of the patent license for this particular work, or 509 (3) arrange, in a manner consistent with the requirements of this License, 510 to extend the patent license to downstream recipients. Knowingly 511 relying means you have actual knowledge that, but for the patent 512 license, your conveying the covered work in a country, or your 513 recipients use of the covered work in a country, would infringe one 514 or more identifiable patents in that country that you have reason to believe 515 are valid. 516 </p><p> 517 If, pursuant to or in connection with a single transaction or arrangement, 518 you convey, or propagate by procuring conveyance of, a covered work, and 519 grant a patent license to some of the parties receiving the covered work 520 authorizing them to use, propagate, modify or convey a specific copy of the 521 covered work, then the patent license you grant is automatically extended to 522 all recipients of the covered work and works based on it. 523 </p><p> 524 A patent license is discriminatory if it does not include 525 within the scope of its coverage, prohibits the exercise of, or is 526 conditioned on the non-exercise of one or more of the rights that are 527 specifically granted under this License. You may not convey a covered work 528 if you are a party to an arrangement with a third party that is in the 529 business of distributing software, under which you make payment to the third 530 party based on the extent of your activity of conveying the work, and under 531 which the third party grants, to any of the parties who would receive the 532 covered work from you, a discriminatory patent license (a) in connection 533 with copies of the covered work conveyed by you (or copies made from those 534 copies), or (b) primarily for and in connection with specific products or 535 compilations that contain the covered work, unless you entered into that 536 arrangement, or that patent license was granted, prior to 28 March 2007. 537 </p><p> 538 Nothing in this License shall be construed as excluding or limiting any 539 implied license or other defenses to infringement that may otherwise be 540 available to you under applicable patent law. 541 </p><h2><a id="NoSurrender"></a> 542 12. No Surrender of Others Freedom. 543 </h2><p> 544 If conditions are imposed on you (whether by court order, agreement or 545 otherwise) that contradict the conditions of this License, they do not 546 excuse you from the conditions of this License. If you cannot convey a 547 covered work so as to satisfy simultaneously your obligations under this 548 License and any other pertinent obligations, then as a consequence you may 549 not convey it at all. For example, if you agree to terms that obligate you 550 to collect a royalty for further conveying from those to whom you convey the 551 Program, the only way you could satisfy both those terms and this License 552 would be to refrain entirely from conveying the Program. 553 </p><h2><a id="UsedWithAGPL"></a> 554 13. Use with the <acronym class="acronym">GNU</acronym> Affero General Public License. 555 </h2><p> 556 Notwithstanding any other provision of this License, you have permission to 557 link or combine any covered work with a work licensed under version 3 of the 558 <acronym class="acronym">GNU</acronym> Affero General Public License into a single combined 559 work, and to convey the resulting work. The terms of this License will 560 continue to apply to the part which is the covered work, but the special 561 requirements of the <acronym class="acronym">GNU</acronym> Affero General Public License, 562 section 13, concerning interaction through a network will apply to the 563 combination as such. 564 </p><h2><a id="RevisedVersions"></a> 565 14. Revised Versions of this License. 566 </h2><p> 567 The Free Software Foundation may publish revised and/or new versions of the 568 <acronym class="acronym">GNU</acronym> General Public License from time to time. Such new 569 versions will be similar in spirit to the present version, but may differ in 570 detail to address new problems or concerns. 571 </p><p> 572 Each version is given a distinguishing version number. If the Program 573 specifies that a certain numbered version of the <acronym class="acronym">GNU</acronym> 574 General Public License or any later version applies to it, you 575 have the option of following the terms and conditions either of that 576 numbered version or of any later version published by the Free Software 577 Foundation. If the Program does not specify a version number of the 578 <acronym class="acronym">GNU</acronym> General Public License, you may choose any version 579 ever published by the Free Software Foundation. 580 </p><p> 581 If the Program specifies that a proxy can decide which future versions of 582 the <acronym class="acronym">GNU</acronym> General Public License can be used, that 583 proxys public statement of acceptance of a version permanently 584 authorizes you to choose that version for the Program. 585 </p><p> 586 Later license versions may give you additional or different permissions. 587 However, no additional obligations are imposed on any author or copyright 588 holder as a result of your choosing to follow a later version. 589 </p><h2><a id="WarrantyDisclaimer"></a> 590 15. Disclaimer of Warranty. 591 </h2><p> 592 THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE 593 LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR 594 OTHER PARTIES PROVIDE THE PROGRAM AS IS WITHOUT WARRANTY OF 595 ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE 596 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 597 THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH 598 YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL 599 NECESSARY SERVICING, REPAIR OR CORRECTION. 600 </p><h2><a id="LiabilityLimitation"></a> 601 16. Limitation of Liability. 602 </h2><p> 603 IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL 604 ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE 605 PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 606 GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE 607 OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA 608 OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 609 PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 610 EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 611 SUCH DAMAGES. 612 </p><h2><a id="InterpretationSecs1516"></a> 613 17. Interpretation of Sections 15 and 16. 614 </h2><p> 615 If the disclaimer of warranty and limitation of liability provided above 616 cannot be given local legal effect according to their terms, reviewing 617 courts shall apply local law that most closely approximates an absolute 618 waiver of all civil liability in connection with the Program, unless a 619 warranty or assumption of liability accompanies a copy of the Program in 620 return for a fee. 621 </p><h2><a id="id-1.3.6.5.99"></a> 622 END OF TERMS AND CONDITIONS 623 </h2><h2><a id="HowToApply"></a> 624 How to Apply These Terms to Your New Programs 625 </h2><p> 626 If you develop a new program, and you want it to be of the greatest possible 627 use to the public, the best way to achieve this is to make it free software 628 which everyone can redistribute and change under these terms. 629 </p><p> 630 To do so, attach the following notices to the program. It is safest to 631 attach them to the start of each source file to most effectively state the 632 exclusion of warranty; and each file should have at least the 633 copyright line and a pointer to where the full notice is 634 found. 635 </p><pre class="screen"> 636 <em class="replaceable"><code>one line to give the programs name and a brief idea of what it does.</code></em> 637 Copyright (C) <em class="replaceable"><code>year</code></em> <em class="replaceable"><code>name of author</code></em> 638 639 This program is free software: you can redistribute it and/or modify 640 it under the terms of the <acronym class="acronym">GNU</acronym> General Public License as published by 641 the Free Software Foundation, either version 3 of the License, or 642 (at your option) any later version. 643 644 This program is distributed in the hope that it will be useful, 645 but WITHOUT ANY WARRANTY; without even the implied warranty of 646 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 647 <acronym class="acronym">GNU</acronym> General Public License for more details. 648 649 You should have received a copy of the <acronym class="acronym">GNU</acronym> General Public License 650 along with this program. If not, see <a class="link" href="http://www.gnu.org/licenses/" target="_top">http://www.gnu.org/licenses/</a>. 651 </pre><p> 652 Also add information on how to contact you by electronic and paper mail. 653 </p><p> 654 If the program does terminal interaction, make it output a short notice like 655 this when it starts in an interactive mode: 656 </p><pre class="screen"> 657 <em class="replaceable"><code>program</code></em> Copyright (C) <em class="replaceable"><code>year</code></em> <em class="replaceable"><code>name of author</code></em> 658 This program comes with ABSOLUTELY NO WARRANTY; for details type <code class="literal">show w</code>. 659 This is free software, and you are welcome to redistribute it 660 under certain conditions; type <code class="literal">show c</code> for details. 661 </pre><p> 662 The hypothetical commands <code class="literal">show w</code> and 663 <code class="literal">show c</code> should show the appropriate parts of 664 the General Public License. Of course, your programs commands might be 665 different; for a GUI interface, you would use an about box. 666 </p><p> 667 You should also get your employer (if you work as a programmer) or school, 668 if any, to sign a copyright disclaimer for the program, if 669 necessary. For more information on this, and how to apply and follow the 670 <acronym class="acronym">GNU</acronym> <acronym class="acronym">GPL</acronym>, see 671 <a class="link" href="http://www.gnu.org/licenses/" target="_top">http://www.gnu.org/licenses/</a>. 672 </p><p> 673 The <acronym class="acronym">GNU</acronym> General Public License does not permit 674 incorporating your program into proprietary programs. If your program is a 675 subroutine library, you may consider it more useful to permit linking 676 proprietary applications with the library. If this is what you want to do, 677 use the <acronym class="acronym">GNU</acronym> Lesser General Public License instead of this 678 License. But first, please read <a class="link" href="https://www.gnu.org/licenses/why-not-lgpl.html" target="_top">https://www.gnu.org/licenses/why-not-lgpl.html</a>. 679 </p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="appendix_free.html">Prev</a></td><td width="20%" align="center"><a accesskey="u" href="appendix.html">Up</a></td><td width="40%" align="right"><a accesskey="n" href="appendix_gfdl.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">AppendixC. 680 Free Software Needs Free Documentation 681 682 </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top">AppendixE.GNU Free Documentation License</td></tr></table></div></body></html>
Indexes created Tue Sep 08 00:25:21 UTC 2026