1 Valid-License-Identifier: LGPL-2.0
2 Valid-License-Identifier: LGPL-2.0+
3 SPDX-URL: https://spdx.org/licenses/LGPL-2.0.html
5 To use this license in source code, put one of the following SPDX
6 tag/value pairs into a comment according to the placement
7 guidelines in the licensing rules documentation.
8 For 'GNU Library General Public License (LGPL) version 2.0 only' use:
9 SPDX-License-Identifier: LGPL-2.0
10 For 'GNU Library General Public License (LGPL) version 2.0 or any later
12 SPDX-License-Identifier: LGPL-2.0+
15 GNU LIBRARY GENERAL PUBLIC LICENSE
18 Copyright (C) 1991 Free Software Foundation, Inc.
19 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
21 Everyone is permitted to copy and distribute verbatim copies of this
22 license document, but changing it is not allowed.
24 [This is the first released version of the library GPL. It is numbered 2
25 because it goes with version 2 of the ordinary GPL.]
29 The licenses for most software are designed to take away your freedom to
30 share and change it. By contrast, the GNU General Public Licenses are
31 intended to guarantee your freedom to share and change free software--to
32 make sure the software is free for all its users.
34 This license, the Library General Public License, applies to some specially
35 designated Free Software Foundation software, and to any other libraries
36 whose authors decide to use it. You can use it for your libraries, too.
38 When we speak of free software, we are referring to freedom, not price. Our
39 General Public Licenses are designed to make sure that you have the freedom
40 to distribute copies of free software (and charge for this service if you
41 wish), that you receive source code or can get it if you want it, that you
42 can change the software or use pieces of it in new free programs; and that
43 you know you can do these things.
45 To protect your rights, we need to make restrictions that forbid anyone to
46 deny you these rights or to ask you to surrender the rights. These
47 restrictions translate to certain responsibilities for you if you
48 distribute copies of the library, or if you modify it.
50 For example, if you distribute copies of the library, whether gratis or for
51 a fee, you must give the recipients all the rights that we gave you. You
52 must make sure that they, too, receive or can get the source code. If you
53 link a program with the library, you must provide complete object files to
54 the recipients so that they can relink them with the library, after making
55 changes to the library and recompiling it. And you must show them these
56 terms so they know their rights.
58 Our method of protecting your rights has two steps: (1) copyright the
59 library, and (2) offer you this license which gives you legal permission to
60 copy, distribute and/or modify the library.
62 Also, for each distributor's protection, we want to make certain that
63 everyone understands that there is no warranty for this free library. If
64 the library is modified by someone else and passed on, we want its
65 recipients to know that what they have is not the original version, so that
66 any problems introduced by others will not reflect on the original authors'
69 Finally, any free program is threatened constantly by software patents. We
70 wish to avoid the danger that companies distributing free software will
71 individually obtain patent licenses, thus in effect transforming the
72 program into proprietary software. To prevent this, we have made it clear
73 that any patent must be licensed for everyone's free use or not licensed at
76 Most GNU software, including some libraries, is covered by the ordinary GNU
77 General Public License, which was designed for utility programs. This
78 license, the GNU Library General Public License, applies to certain
79 designated libraries. This license is quite different from the ordinary
80 one; be sure to read it in full, and don't assume that anything in it is
81 the same as in the ordinary license.
83 The reason we have a separate public license for some libraries is that
84 they blur the distinction we usually make between modifying or adding to a
85 program and simply using it. Linking a program with a library, without
86 changing the library, is in some sense simply using the library, and is
87 analogous to running a utility program or application program. However, in
88 a textual and legal sense, the linked executable is a combined work, a
89 derivative of the original library, and the ordinary General Public License
92 Because of this blurred distinction, using the ordinary General Public
93 License for libraries did not effectively promote software sharing, because
94 most developers did not use the libraries. We concluded that weaker
95 conditions might promote sharing better.
97 However, unrestricted linking of non-free programs would deprive the users
98 of those programs of all benefit from the free status of the libraries
99 themselves. This Library General Public License is intended to permit
100 developers of non-free programs to use free libraries, while preserving
101 your freedom as a user of such programs to change the free libraries that
102 are incorporated in them. (We have not seen how to achieve this as regards
103 changes in header files, but we have achieved it as regards changes in the
104 actual functions of the Library.) The hope is that this will lead to faster
105 development of free libraries.
107 The precise terms and conditions for copying, distribution and modification
108 follow. Pay close attention to the difference between a "work based on the
109 library" and a "work that uses the library". The former contains code
110 derived from the library, while the latter only works together with the
113 Note that it is possible for a library to be covered by the ordinary
114 General Public License rather than by this special one.
116 TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
118 0. This License Agreement applies to any software library which contains a
119 notice placed by the copyright holder or other authorized party saying
120 it may be distributed under the terms of this Library General Public
121 License (also called "this License"). Each licensee is addressed as
124 A "library" means a collection of software functions and/or data
125 prepared so as to be conveniently linked with application programs
126 (which use some of those functions and data) to form executables.
128 The "Library", below, refers to any such software library or work which
129 has been distributed under these terms. A "work based on the Library"
130 means either the Library or any derivative work under copyright law:
131 that is to say, a work containing the Library or a portion of it, either
132 verbatim or with modifications and/or translated straightforwardly into
133 another language. (Hereinafter, translation is included without
134 limitation in the term "modification".)
136 "Source code" for a work means the preferred form of the work for making
137 modifications to it. For a library, complete source code means all the
138 source code for all modules it contains, plus any associated interface
139 definition files, plus the scripts used to control compilation and
140 installation of the library.
142 Activities other than copying, distribution and modification are not
143 covered by this License; they are outside its scope. The act of running
144 a program using the Library is not restricted, and output from such a
145 program is covered only if its contents constitute a work based on the
146 Library (independent of the use of the Library in a tool for writing
147 it). Whether that is true depends on what the Library does and what the
148 program that uses the Library does.
150 1. You may copy and distribute verbatim copies of the Library's complete
151 source code as you receive it, in any medium, provided that you
152 conspicuously and appropriately publish on each copy an appropriate
153 copyright notice and disclaimer of warranty; keep intact all the notices
154 that refer to this License and to the absence of any warranty; and
155 distribute a copy of this License along with the Library.
157 You may charge a fee for the physical act of transferring a copy, and
158 you may at your option offer warranty protection in exchange for a fee.
160 2. You may modify your copy or copies of the Library or any portion of it,
161 thus forming a work based on the Library, and copy and distribute such
162 modifications or work under the terms of Section 1 above, provided that
163 you also meet all of these conditions:
165 a) The modified work must itself be a software library.
167 b) You must cause the files modified to carry prominent notices stating
168 that you changed the files and the date of any change.
170 c) You must cause the whole of the work to be licensed at no charge to
171 all third parties under the terms of this License.
173 d) If a facility in the modified Library refers to a function or a table
174 of data to be supplied by an application program that uses the
175 facility, other than as an argument passed when the facility is
176 invoked, then you must make a good faith effort to ensure that, in
177 the event an application does not supply such function or table, the
178 facility still operates, and performs whatever part of its purpose
181 (For example, a function in a library to compute square roots has a
182 purpose that is entirely well-defined independent of the
183 application. Therefore, Subsection 2d requires that any
184 application-supplied function or table used by this function must be
185 optional: if the application does not supply it, the square root
186 function must still compute square roots.)
188 These requirements apply to the modified work as a whole. If
189 identifiable sections of that work are not derived from the Library, and
190 can be reasonably considered independent and separate works in
191 themselves, then this License, and its terms, do not apply to those
192 sections when you distribute them as separate works. But when you
193 distribute the same sections as part of a whole which is a work based on
194 the Library, the distribution of the whole must be on the terms of this
195 License, whose permissions for other licensees extend to the entire
196 whole, and thus to each and every part regardless of who wrote it.
198 Thus, it is not the intent of this section to claim rights or contest
199 your rights to work written entirely by you; rather, the intent is to
200 exercise the right to control the distribution of derivative or
201 collective works based on the Library.
203 In addition, mere aggregation of another work not based on the Library
204 with the Library (or with a work based on the Library) on a volume of a
205 storage or distribution medium does not bring the other work under the
206 scope of this License.
208 3. You may opt to apply the terms of the ordinary GNU General Public
209 License instead of this License to a given copy of the Library. To do
210 this, you must alter all the notices that refer to this License, so that
211 they refer to the ordinary GNU General Public License, version 2,
212 instead of to this License. (If a newer version than version 2 of the
213 ordinary GNU General Public License has appeared, then you can specify
214 that version instead if you wish.) Do not make any other change in these
217 Once this change is made in a given copy, it is irreversible for that
218 copy, so the ordinary GNU General Public License applies to all
219 subsequent copies and derivative works made from that copy.
221 This option is useful when you wish to copy part of the code of the
222 Library into a program that is not a library.
224 4. You may copy and distribute the Library (or a portion or derivative of
225 it, under Section 2) in object code or executable form under the terms
226 of Sections 1 and 2 above provided that you accompany it with the
227 complete corresponding machine-readable source code, which must be
228 distributed under the terms of Sections 1 and 2 above on a medium
229 customarily used for software interchange.
231 If distribution of object code is made by offering access to copy from a
232 designated place, then offering equivalent access to copy the source
233 code from the same place satisfies the requirement to distribute the
234 source code, even though third parties are not compelled to copy the
235 source along with the object code.
237 5. A program that contains no derivative of any portion of the Library, but
238 is designed to work with the Library by being compiled or linked with
239 it, is called a "work that uses the Library". Such a work, in isolation,
240 is not a derivative work of the Library, and therefore falls outside the
241 scope of this License.
243 However, linking a "work that uses the Library" with the Library creates
244 an executable that is a derivative of the Library (because it contains
245 portions of the Library), rather than a "work that uses the
246 library". The executable is therefore covered by this License. Section 6
247 states terms for distribution of such executables.
249 When a "work that uses the Library" uses material from a header file
250 that is part of the Library, the object code for the work may be a
251 derivative work of the Library even though the source code is
252 not. Whether this is true is especially significant if the work can be
253 linked without the Library, or if the work is itself a library. The
254 threshold for this to be true is not precisely defined by law.
256 If such an object file uses only numerical parameters, data structure
257 layouts and accessors, and small macros and small inline functions (ten
258 lines or less in length), then the use of the object file is
259 unrestricted, regardless of whether it is legally a derivative
260 work. (Executables containing this object code plus portions of the
261 Library will still fall under Section 6.)
263 Otherwise, if the work is a derivative of the Library, you may
264 distribute the object code for the work under the terms of Section
265 6. Any executables containing that work also fall under Section 6,
266 whether or not they are linked directly with the Library itself.
268 6. As an exception to the Sections above, you may also compile or link a
269 "work that uses the Library" with the Library to produce a work
270 containing portions of the Library, and distribute that work under terms
271 of your choice, provided that the terms permit modification of the work
272 for the customer's own use and reverse engineering for debugging such
275 You must give prominent notice with each copy of the work that the
276 Library is used in it and that the Library and its use are covered by
277 this License. You must supply a copy of this License. If the work during
278 execution displays copyright notices, you must include the copyright
279 notice for the Library among them, as well as a reference directing the
280 user to the copy of this License. Also, you must do one of these things:
282 a) Accompany the work with the complete corresponding machine-readable
283 source code for the Library including whatever changes were used in
284 the work (which must be distributed under Sections 1 and 2 above);
285 and, if the work is an executable linked with the Library, with the
286 complete machine-readable "work that uses the Library", as object
287 code and/or source code, so that the user can modify the Library and
288 then relink to produce a modified executable containing the modified
289 Library. (It is understood that the user who changes the contents of
290 definitions files in the Library will not necessarily be able to
291 recompile the application to use the modified definitions.)
293 b) Accompany the work with a written offer, valid for at least three
294 years, to give the same user the materials specified in Subsection
295 6a, above, for a charge no more than the cost of performing this
298 c) If distribution of the work is made by offering access to copy from a
299 designated place, offer equivalent access to copy the above specified
300 materials from the same place.
302 d) Verify that the user has already received a copy of these materials
303 or that you have already sent this user a copy.
305 For an executable, the required form of the "work that uses the Library"
306 must include any data and utility programs needed for reproducing the
307 executable from it. However, as a special exception, the source code
308 distributed need not include anything that is normally distributed (in
309 either source or binary form) with the major components (compiler,
310 kernel, and so on) of the operating system on which the executable runs,
311 unless that component itself accompanies the executable.
313 It may happen that this requirement contradicts the license restrictions
314 of other proprietary libraries that do not normally accompany the
315 operating system. Such a contradiction means you cannot use both them
316 and the Library together in an executable that you distribute.
318 7. You may place library facilities that are a work based on the Library
319 side-by-side in a single library together with other library facilities
320 not covered by this License, and distribute such a combined library,
321 provided that the separate distribution of the work based on the Library
322 and of the other library facilities is otherwise permitted, and provided
323 that you do these two things:
325 a) Accompany the combined library with a copy of the same work based on
326 the Library, uncombined with any other library facilities. This must
327 be distributed under the terms of the Sections above.
329 b) Give prominent notice with the combined library of the fact that part
330 of it is a work based on the Library, and explaining where to find
331 the accompanying uncombined form of the same work.
333 8. You may not copy, modify, sublicense, link with, or distribute the
334 Library except as expressly provided under this License. Any attempt
335 otherwise to copy, modify, sublicense, link with, or distribute the
336 Library is void, and will automatically terminate your rights under this
337 License. However, parties who have received copies, or rights, from you
338 under this License will not have their licenses terminated so long as
339 such parties remain in full compliance.
341 9. You are not required to accept this License, since you have not signed
342 it. However, nothing else grants you permission to modify or distribute
343 the Library or its derivative works. These actions are prohibited by law
344 if you do not accept this License. Therefore, by modifying or
345 distributing the Library (or any work based on the Library), you
346 indicate your acceptance of this License to do so, and all its terms and
347 conditions for copying, distributing or modifying the Library or works
350 10. Each time you redistribute the Library (or any work based on the
351 Library), the recipient automatically receives a license from the
352 original licensor to copy, distribute, link with or modify the Library
353 subject to these terms and conditions. You may not impose any further
354 restrictions on the recipients' exercise of the rights granted
355 herein. You are not responsible for enforcing compliance by third
356 parties to this License.
358 11. If, as a consequence of a court judgment or allegation of patent
359 infringement or for any other reason (not limited to patent issues),
360 conditions are imposed on you (whether by court order, agreement or
361 otherwise) that contradict the conditions of this License, they do not
362 excuse you from the conditions of this License. If you cannot
363 distribute so as to satisfy simultaneously your obligations under this
364 License and any other pertinent obligations, then as a consequence you
365 may not distribute the Library at all. For example, if a patent license
366 would not permit royalty-free redistribution of the Library by all
367 those who receive copies directly or indirectly through you, then the
368 only way you could satisfy both it and this License would be to refrain
369 entirely from distribution of the Library.
371 If any portion of this section is held invalid or unenforceable under
372 any particular circumstance, the balance of the section is intended to
373 apply, and the section as a whole is intended to apply in other
376 It is not the purpose of this section to induce you to infringe any
377 patents or other property right claims or to contest validity of any
378 such claims; this section has the sole purpose of protecting the
379 integrity of the free software distribution system which is implemented
380 by public license practices. Many people have made generous
381 contributions to the wide range of software distributed through that
382 system in reliance on consistent application of that system; it is up
383 to the author/donor to decide if he or she is willing to distribute
384 software through any other system and a licensee cannot impose that
387 This section is intended to make thoroughly clear what is believed to
388 be a consequence of the rest of this License.
390 12. If the distribution and/or use of the Library is restricted in certain
391 countries either by patents or by copyrighted interfaces, the original
392 copyright holder who places the Library under this License may add an
393 explicit geographical distribution limitation excluding those
394 countries, so that distribution is permitted only in or among countries
395 not thus excluded. In such case, this License incorporates the
396 limitation as if written in the body of this License.
398 13. The Free Software Foundation may publish revised and/or new versions of
399 the Library General Public License from time to time. Such new versions
400 will be similar in spirit to the present version, but may differ in
401 detail to address new problems or concerns.
403 Each version is given a distinguishing version number. If the Library
404 specifies a version number of this License which applies to it and "any
405 later version", you have the option of following the terms and
406 conditions either of that version or of any later version published by
407 the Free Software Foundation. If the Library does not specify a license
408 version number, you may choose any version ever published by the Free
411 14. If you wish to incorporate parts of the Library into other free
412 programs whose distribution conditions are incompatible with these,
413 write to the author to ask for permission. For software which is
414 copyrighted by the Free Software Foundation, write to the Free Software
415 Foundation; we sometimes make exceptions for this. Our decision will be
416 guided by the two goals of preserving the free status of all
417 derivatives of our free software and of promoting the sharing and reuse
418 of software generally.
422 15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
423 FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
424 OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
425 PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
426 EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
427 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE
428 ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE LIBRARY IS WITH
429 YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL
430 NECESSARY SERVICING, REPAIR OR CORRECTION.
432 16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
433 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
434 REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU FOR
435 DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL
436 DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE LIBRARY
437 (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED
438 INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF
439 THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF SUCH HOLDER OR
440 OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
442 END OF TERMS AND CONDITIONS
444 How to Apply These Terms to Your New Libraries
446 If you develop a new library, and you want it to be of the greatest
447 possible use to the public, we recommend making it free software that
448 everyone can redistribute and change. You can do so by permitting
449 redistribution under these terms (or, alternatively, under the terms of the
450 ordinary General Public License).
452 To apply these terms, attach the following notices to the library. It is
453 safest to attach them to the start of each source file to most effectively
454 convey the exclusion of warranty; and each file should have at least the
455 "copyright" line and a pointer to where the full notice is found.
457 one line to give the library's name and an idea of what it does.
458 Copyright (C) year name of author
460 This library is free software; you can redistribute it and/or modify it
461 under the terms of the GNU Library General Public License as published by
462 the Free Software Foundation; either version 2 of the License, or (at your
463 option) any later version.
465 This library is distributed in the hope that it will be useful, but WITHOUT
466 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
467 FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
468 License for more details.
470 You should have received a copy of the GNU Library General Public License
471 along with this library; if not, write to the Free Software Foundation,
472 Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
474 Also add information on how to contact you by electronic and paper mail.
476 You should also get your employer (if you work as a programmer) or your
477 school, if any, to sign a "copyright disclaimer" for the library, if
478 necessary. Here is a sample; alter the names:
480 Yoyodyne, Inc., hereby disclaims all copyright interest in
481 the library `Frob' (a library for tweaking knobs) written
482 by James Random Hacker.
484 signature of Ty Coon, 1 April 1990
485 Ty Coon, President of Vice
487 That's all there is to it!
projects / platform / kernel / linux-rpi.git / blob