Root/COPYING.LGPLv21

Source at commit 624caeb00652f6118dc64698b7dad6fa3e5bdcc2 created 2 years 4 months ago.
By Werner Almesberger, atusb/: use VR, POWERED, and LED from kicad-libs
1[ This license applies to some but not all files of this project.
2  Please refer to the file COPYING for details. ]
3
4
5          GNU LESSER GENERAL PUBLIC LICENSE
6               Version 2.1, February 1999
7
8 Copyright (C) 1991, 1999 Free Software Foundation, Inc.
9 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
10 Everyone is permitted to copy and distribute verbatim copies
11 of this license document, but changing it is not allowed.
12
13[This is the first released version of the Lesser GPL. It also counts
14 as the successor of the GNU Library Public License, version 2, hence
15 the version number 2.1.]
16
17                Preamble
18
19  The licenses for most software are designed to take away your
20freedom to share and change it. By contrast, the GNU General Public
21Licenses are intended to guarantee your freedom to share and change
22free software--to make sure the software is free for all its users.
23
24  This license, the Lesser General Public License, applies to some
25specially designated software packages--typically libraries--of the
26Free Software Foundation and other authors who decide to use it. You
27can use it too, but we suggest you first think carefully about whether
28this license or the ordinary General Public License is the better
29strategy to use in any particular case, based on the explanations below.
30
31  When we speak of free software, we are referring to freedom of use,
32not price. Our General Public Licenses are designed to make sure that
33you have the freedom to distribute copies of free software (and charge
34for this service if you wish); that you receive source code or can get
35it if you want it; that you can change the software and use pieces of
36it in new free programs; and that you are informed that you can do
37these things.
38
39  To protect your rights, we need to make restrictions that forbid
40distributors to deny you these rights or to ask you to surrender these
41rights. These restrictions translate to certain responsibilities for
42you if you distribute copies of the library or if you modify it.
43
44  For example, if you distribute copies of the library, whether gratis
45or for a fee, you must give the recipients all the rights that we gave
46you. You must make sure that they, too, receive or can get the source
47code. If you link other code with the library, you must provide
48complete object files to the recipients, so that they can relink them
49with the library after making changes to the library and recompiling
50it. And you must show them these terms so they know their rights.
51
52  We protect your rights with a two-step method: (1) we copyright the
53library, and (2) we offer you this license, which gives you legal
54permission to copy, distribute and/or modify the library.
55
56  To protect each distributor, we want to make it very clear that
57there is no warranty for the free library. Also, if the library is
58modified by someone else and passed on, the recipients should know
59that what they have is not the original version, so that the original
60author's reputation will not be affected by problems that might be
61introduced by others.
62
63  Finally, software patents pose a constant threat to the existence of
64any free program. We wish to make sure that a company cannot
65effectively restrict the users of a free program by obtaining a
66restrictive license from a patent holder. Therefore, we insist that
67any patent license obtained for a version of the library must be
68consistent with the full freedom of use specified in this license.
69
70  Most GNU software, including some libraries, is covered by the
71ordinary GNU General Public License. This license, the GNU Lesser
72General Public License, applies to certain designated libraries, and
73is quite different from the ordinary General Public License. We use
74this license for certain libraries in order to permit linking those
75libraries into non-free programs.
76
77  When a program is linked with a library, whether statically or using
78a shared library, the combination of the two is legally speaking a
79combined work, a derivative of the original library. The ordinary
80General Public License therefore permits such linking only if the
81entire combination fits its criteria of freedom. The Lesser General
82Public License permits more lax criteria for linking other code with
83the library.
84
85  We call this license the "Lesser" General Public License because it
86does Less to protect the user's freedom than the ordinary General
87Public License. It also provides other free software developers Less
88of an advantage over competing non-free programs. These disadvantages
89are the reason we use the ordinary General Public License for many
90libraries. However, the Lesser license provides advantages in certain
91special circumstances.
92
93  For example, on rare occasions, there may be a special need to
94encourage the widest possible use of a certain library, so that it becomes
95a de-facto standard. To achieve this, non-free programs must be
96allowed to use the library. A more frequent case is that a free
97library does the same job as widely used non-free libraries. In this
98case, there is little to gain by limiting the free library to free
99software only, so we use the Lesser General Public License.
100
101  In other cases, permission to use a particular library in non-free
102programs enables a greater number of people to use a large body of
103free software. For example, permission to use the GNU C Library in
104non-free programs enables many more people to use the whole GNU
105operating system, as well as its variant, the GNU/Linux operating
106system.
107
108  Although the Lesser General Public License is Less protective of the
109users' freedom, it does ensure that the user of a program that is
110linked with the Library has the freedom and the wherewithal to run
111that program using a modified version of the Library.
112
113  The precise terms and conditions for copying, distribution and
114modification follow. Pay close attention to the difference between a
115"work based on the library" and a "work that uses the library". The
116former contains code derived from the library, whereas the latter must
117be combined with the library in order to run.
118
119          GNU LESSER GENERAL PUBLIC LICENSE
120   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
121
122  0. This License Agreement applies to any software library or other
123program which contains a notice placed by the copyright holder or
124other authorized party saying it may be distributed under the terms of
125this Lesser General Public License (also called "this License").
126Each licensee is addressed as "you".
127
128  A "library" means a collection of software functions and/or data
129prepared so as to be conveniently linked with application programs
130(which use some of those functions and data) to form executables.
131
132  The "Library", below, refers to any such software library or work
133which has been distributed under these terms. A "work based on the
134Library" means either the Library or any derivative work under
135copyright law: that is to say, a work containing the Library or a
136portion of it, either verbatim or with modifications and/or translated
137straightforwardly into another language. (Hereinafter, translation is
138included without limitation in the term "modification".)
139
140  "Source code" for a work means the preferred form of the work for
141making modifications to it. For a library, complete source code means
142all the source code for all modules it contains, plus any associated
143interface definition files, plus the scripts used to control compilation
144and installation of the library.
145
146  Activities other than copying, distribution and modification are not
147covered by this License; they are outside its scope. The act of
148running a program using the Library is not restricted, and output from
149such a program is covered only if its contents constitute a work based
150on the Library (independent of the use of the Library in a tool for
151writing it). Whether that is true depends on what the Library does
152and what the program that uses the Library does.
153
154  1. You may copy and distribute verbatim copies of the Library's
155complete source code as you receive it, in any medium, provided that
156you conspicuously and appropriately publish on each copy an
157appropriate copyright notice and disclaimer of warranty; keep intact
158all the notices that refer to this License and to the absence of any
159warranty; and distribute a copy of this License along with the
160Library.
161
162  You may charge a fee for the physical act of transferring a copy,
163and you may at your option offer warranty protection in exchange for a
164fee.
165
166  2. You may modify your copy or copies of the Library or any portion
167of it, thus forming a work based on the Library, and copy and
168distribute such modifications or work under the terms of Section 1
169above, provided that you also meet all of these conditions:
170
171    a) The modified work must itself be a software library.
172
173    b) You must cause the files modified to carry prominent notices
174    stating that you changed the files and the date of any change.
175
176    c) You must cause the whole of the work to be licensed at no
177    charge to all third parties under the terms of this License.
178
179    d) If a facility in the modified Library refers to a function or a
180    table of data to be supplied by an application program that uses
181    the facility, other than as an argument passed when the facility
182    is invoked, then you must make a good faith effort to ensure that,
183    in the event an application does not supply such function or
184    table, the facility still operates, and performs whatever part of
185    its purpose remains meaningful.
186
187    (For example, a function in a library to compute square roots has
188    a purpose that is entirely well-defined independent of the
189    application. Therefore, Subsection 2d requires that any
190    application-supplied function or table used by this function must
191    be optional: if the application does not supply it, the square
192    root function must still compute square roots.)
193
194These requirements apply to the modified work as a whole. If
195identifiable sections of that work are not derived from the Library,
196and can be reasonably considered independent and separate works in
197themselves, then this License, and its terms, do not apply to those
198sections when you distribute them as separate works. But when you
199distribute the same sections as part of a whole which is a work based
200on the Library, the distribution of the whole must be on the terms of
201this License, whose permissions for other licensees extend to the
202entire whole, and thus to each and every part regardless of who wrote
203it.
204
205Thus, it is not the intent of this section to claim rights or contest
206your rights to work written entirely by you; rather, the intent is to
207exercise the right to control the distribution of derivative or
208collective works based on the Library.
209
210In addition, mere aggregation of another work not based on the Library
211with the Library (or with a work based on the Library) on a volume of
212a storage or distribution medium does not bring the other work under
213the scope of this License.
214
215  3. You may opt to apply the terms of the ordinary GNU General Public
216License instead of this License to a given copy of the Library. To do
217this, you must alter all the notices that refer to this License, so
218that they refer to the ordinary GNU General Public License, version 2,
219instead of to this License. (If a newer version than version 2 of the
220ordinary GNU General Public License has appeared, then you can specify
221that version instead if you wish.) Do not make any other change in
222these notices.
223
224  Once this change is made in a given copy, it is irreversible for
225that copy, so the ordinary GNU General Public License applies to all
226subsequent copies and derivative works made from that copy.
227
228  This option is useful when you wish to copy part of the code of
229the Library into a program that is not a library.
230
231  4. You may copy and distribute the Library (or a portion or
232derivative of it, under Section 2) in object code or executable form
233under the terms of Sections 1 and 2 above provided that you accompany
234it with the complete corresponding machine-readable source code, which
235must be distributed under the terms of Sections 1 and 2 above on a
236medium customarily used for software interchange.
237
238  If distribution of object code is made by offering access to copy
239from a designated place, then offering equivalent access to copy the
240source code from the same place satisfies the requirement to
241distribute the source code, even though third parties are not
242compelled to copy the source along with the object code.
243
244  5. A program that contains no derivative of any portion of the
245Library, but is designed to work with the Library by being compiled or
246linked with it, is called a "work that uses the Library". Such a
247work, in isolation, is not a derivative work of the Library, and
248therefore falls outside the scope of this License.
249
250  However, linking a "work that uses the Library" with the Library
251creates an executable that is a derivative of the Library (because it
252contains portions of the Library), rather than a "work that uses the
253library". The executable is therefore covered by this License.
254Section 6 states terms for distribution of such executables.
255
256  When a "work that uses the Library" uses material from a header file
257that is part of the Library, the object code for the work may be a
258derivative work of the Library even though the source code is not.
259Whether this is true is especially significant if the work can be
260linked without the Library, or if the work is itself a library. The
261threshold for this to be true is not precisely defined by law.
262
263  If such an object file uses only numerical parameters, data
264structure layouts and accessors, and small macros and small inline
265functions (ten lines or less in length), then the use of the object
266file is unrestricted, regardless of whether it is legally a derivative
267work. (Executables containing this object code plus portions of the
268Library will still fall under Section 6.)
269
270  Otherwise, if the work is a derivative of the Library, you may
271distribute the object code for the work under the terms of Section 6.
272Any executables containing that work also fall under Section 6,
273whether or not they are linked directly with the Library itself.
274
275  6. As an exception to the Sections above, you may also combine or
276link a "work that uses the Library" with the Library to produce a
277work containing portions of the Library, and distribute that work
278under terms of your choice, provided that the terms permit
279modification of the work for the customer's own use and reverse
280engineering for debugging such modifications.
281
282  You must give prominent notice with each copy of the work that the
283Library is used in it and that the Library and its use are covered by
284this License. You must supply a copy of this License. If the work
285during execution displays copyright notices, you must include the
286copyright notice for the Library among them, as well as a reference
287directing the user to the copy of this License. Also, you must do one
288of these things:
289
290    a) Accompany the work with the complete corresponding
291    machine-readable source code for the Library including whatever
292    changes were used in the work (which must be distributed under
293    Sections 1 and 2 above); and, if the work is an executable linked
294    with the Library, with the complete machine-readable "work that
295    uses the Library", as object code and/or source code, so that the
296    user can modify the Library and then relink to produce a modified
297    executable containing the modified Library. (It is understood
298    that the user who changes the contents of definitions files in the
299    Library will not necessarily be able to recompile the application
300    to use the modified definitions.)
301
302    b) Use a suitable shared library mechanism for linking with the
303    Library. A suitable mechanism is one that (1) uses at run time a
304    copy of the library already present on the user's computer system,
305    rather than copying library functions into the executable, and (2)
306    will operate properly with a modified version of the library, if
307    the user installs one, as long as the modified version is
308    interface-compatible with the version that the work was made with.
309
310    c) Accompany the work with a written offer, valid for at
311    least three years, to give the same user the materials
312    specified in Subsection 6a, above, for a charge no more
313    than the cost of performing this distribution.
314
315    d) If distribution of the work is made by offering access to copy
316    from a designated place, offer equivalent access to copy the above
317    specified materials from the same place.
318
319    e) Verify that the user has already received a copy of these
320    materials or that you have already sent this user a copy.
321
322  For an executable, the required form of the "work that uses the
323Library" must include any data and utility programs needed for
324reproducing the executable from it. However, as a special exception,
325the materials to be distributed need not include anything that is
326normally distributed (in either source or binary form) with the major
327components (compiler, kernel, and so on) of the operating system on
328which the executable runs, unless that component itself accompanies
329the executable.
330
331  It may happen that this requirement contradicts the license
332restrictions of other proprietary libraries that do not normally
333accompany the operating system. Such a contradiction means you cannot
334use both them and the Library together in an executable that you
335distribute.
336
337  7. You may place library facilities that are a work based on the
338Library side-by-side in a single library together with other library
339facilities not covered by this License, and distribute such a combined
340library, provided that the separate distribution of the work based on
341the Library and of the other library facilities is otherwise
342permitted, and provided that you do these two things:
343
344    a) Accompany the combined library with a copy of the same work
345    based on the Library, uncombined with any other library
346    facilities. This must be distributed under the terms of the
347    Sections above.
348
349    b) Give prominent notice with the combined library of the fact
350    that part of it is a work based on the Library, and explaining
351    where to find the accompanying uncombined form of the same work.
352
353  8. You may not copy, modify, sublicense, link with, or distribute
354the Library except as expressly provided under this License. Any
355attempt otherwise to copy, modify, sublicense, link with, or
356distribute the Library is void, and will automatically terminate your
357rights under this License. However, parties who have received copies,
358or rights, from you under this License will not have their licenses
359terminated so long as such parties remain in full compliance.
360
361  9. You are not required to accept this License, since you have not
362signed it. However, nothing else grants you permission to modify or
363distribute the Library or its derivative works. These actions are
364prohibited by law if you do not accept this License. Therefore, by
365modifying or distributing the Library (or any work based on the
366Library), you indicate your acceptance of this License to do so, and
367all its terms and conditions for copying, distributing or modifying
368the Library or works based on it.
369
370  10. Each time you redistribute the Library (or any work based on the
371Library), the recipient automatically receives a license from the
372original licensor to copy, distribute, link with or modify the Library
373subject to these terms and conditions. You may not impose any further
374restrictions on the recipients' exercise of the rights granted herein.
375You are not responsible for enforcing compliance by third parties with
376this License.
377
378  11. If, as a consequence of a court judgment or allegation of patent
379infringement or for any other reason (not limited to patent issues),
380conditions are imposed on you (whether by court order, agreement or
381otherwise) that contradict the conditions of this License, they do not
382excuse you from the conditions of this License. If you cannot
383distribute so as to satisfy simultaneously your obligations under this
384License and any other pertinent obligations, then as a consequence you
385may not distribute the Library at all. For example, if a patent
386license would not permit royalty-free redistribution of the Library by
387all those who receive copies directly or indirectly through you, then
388the only way you could satisfy both it and this License would be to
389refrain entirely from distribution of the Library.
390
391If any portion of this section is held invalid or unenforceable under any
392particular circumstance, the balance of the section is intended to apply,
393and the section as a whole is intended to apply in other circumstances.
394
395It is not the purpose of this section to induce you to infringe any
396patents or other property right claims or to contest validity of any
397such claims; this section has the sole purpose of protecting the
398integrity of the free software distribution system which is
399implemented by public license practices. Many people have made
400generous contributions to the wide range of software distributed
401through that system in reliance on consistent application of that
402system; it is up to the author/donor to decide if he or she is willing
403to distribute software through any other system and a licensee cannot
404impose that choice.
405
406This section is intended to make thoroughly clear what is believed to
407be a consequence of the rest of this License.
408
409  12. If the distribution and/or use of the Library is restricted in
410certain countries either by patents or by copyrighted interfaces, the
411original copyright holder who places the Library under this License may add
412an explicit geographical distribution limitation excluding those countries,
413so that distribution is permitted only in or among countries not thus
414excluded. In such case, this License incorporates the limitation as if
415written in the body of this License.
416
417  13. The Free Software Foundation may publish revised and/or new
418versions of the Lesser General Public License from time to time.
419Such new versions will be similar in spirit to the present version,
420but may differ in detail to address new problems or concerns.
421
422Each version is given a distinguishing version number. If the Library
423specifies a version number of this License which applies to it and
424"any later version", you have the option of following the terms and
425conditions either of that version or of any later version published by
426the Free Software Foundation. If the Library does not specify a
427license version number, you may choose any version ever published by
428the Free Software Foundation.
429
430  14. If you wish to incorporate parts of the Library into other free
431programs whose distribution conditions are incompatible with these,
432write to the author to ask for permission. For software which is
433copyrighted by the Free Software Foundation, write to the Free
434Software Foundation; we sometimes make exceptions for this. Our
435decision will be guided by the two goals of preserving the free status
436of all derivatives of our free software and of promoting the sharing
437and reuse of software generally.
438
439                NO WARRANTY
440
441  15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
442WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
443EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
444OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY
445KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
446IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
447PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
448LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
449THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
450
451  16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
452WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
453AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
454FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
455CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
456LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
457RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
458FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
459SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
460DAMAGES.
461
462             END OF TERMS AND CONDITIONS
463
464           How to Apply These Terms to Your New Libraries
465
466  If you develop a new library, and you want it to be of the greatest
467possible use to the public, we recommend making it free software that
468everyone can redistribute and change. You can do so by permitting
469redistribution under these terms (or, alternatively, under the terms of the
470ordinary General Public License).
471
472  To apply these terms, attach the following notices to the library. It is
473safest to attach them to the start of each source file to most effectively
474convey the exclusion of warranty; and each file should have at least the
475"copyright" line and a pointer to where the full notice is found.
476
477    <one line to give the library's name and a brief idea of what it does.>
478    Copyright (C) <year> <name of author>
479
480    This library is free software; you can redistribute it and/or
481    modify it under the terms of the GNU Lesser General Public
482    License as published by the Free Software Foundation; either
483    version 2.1 of the License, or (at your option) any later version.
484
485    This library is distributed in the hope that it will be useful,
486    but WITHOUT ANY WARRANTY; without even the implied warranty of
487    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
488    Lesser General Public License for more details.
489
490    You should have received a copy of the GNU Lesser General Public
491    License along with this library; if not, write to the Free Software
492    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
493
494Also add information on how to contact you by electronic and paper mail.
495
496You should also get your employer (if you work as a programmer) or your
497school, if any, to sign a "copyright disclaimer" for the library, if
498necessary. Here is a sample; alter the names:
499
500  Yoyodyne, Inc., hereby disclaims all copyright interest in the
501  library `Frob' (a library for tweaking knobs) written by James Random Hacker.
502
503  <signature of Ty Coon>, 1 April 1990
504  Ty Coon, President of Vice
505
506That's all there is to it!
507
508
509

Archive Download this file



interactive