Statistics
| Revision:

root / COPYING.LIB

History | View | Annotate | Download (25.9 KB)

1 575 hiro
2
                  GNU LESSER GENERAL PUBLIC LICENSE
3
                       Version 2.1, February 1999
4
5
 Copyright (C) 1991, 1999 Free Software Foundation, Inc.
6
	51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
7
 Everyone is permitted to copy and distribute verbatim copies
8
 of this license document, but changing it is not allowed.
9
10
[This is the first released version of the Lesser GPL.  It also counts
11
 as the successor of the GNU Library Public License, version 2, hence
12
 the version number 2.1.]
13
14
                            Preamble
15
16
  The licenses for most software are designed to take away your
17
freedom to share and change it.  By contrast, the GNU General Public
18
Licenses are intended to guarantee your freedom to share and change
19
free software--to make sure the software is free for all its users.
20
21
  This license, the Lesser General Public License, applies to some
22
specially designated software packages--typically libraries--of the
23
Free Software Foundation and other authors who decide to use it.  You
24
can use it too, but we suggest you first think carefully about whether
25
this license or the ordinary General Public License is the better
26
strategy to use in any particular case, based on the explanations
27
below.
28
29
  When we speak of free software, we are referring to freedom of use,
30
not price.  Our General Public Licenses are designed to make sure that
31
you have the freedom to distribute copies of free software (and charge
32
for this service if you wish); that you receive source code or can get
33
it if you want it; that you can change the software and use pieces of
34
it in new free programs; and that you are informed that you can do
35
these things.
36
37
  To protect your rights, we need to make restrictions that forbid
38
distributors to deny you these rights or to ask you to surrender these
39
rights.  These restrictions translate to certain responsibilities for
40
you if you distribute copies of the library or if you modify it.
41
42
  For example, if you distribute copies of the library, whether gratis
43
or for a fee, you must give the recipients all the rights that we gave
44
you.  You must make sure that they, too, receive or can get the source
45
code.  If you link other code with the library, you must provide
46
complete object files to the recipients, so that they can relink them
47
with the library after making changes to the library and recompiling
48
it.  And you must show them these terms so they know their rights.
49
50
  We protect your rights with a two-step method: (1) we copyright the
51
library, and (2) we offer you this license, which gives you legal
52
permission to copy, distribute and/or modify the library.
53
54
  To protect each distributor, we want to make it very clear that
55
there is no warranty for the free library.  Also, if the library is
56
modified by someone else and passed on, the recipients should know
57
that what they have is not the original version, so that the original
58
author's reputation will not be affected by problems that might be
59
introduced by others.
60
61
  Finally, software patents pose a constant threat to the existence of
62
any free program.  We wish to make sure that a company cannot
63
effectively restrict the users of a free program by obtaining a
64
restrictive license from a patent holder.  Therefore, we insist that
65
any patent license obtained for a version of the library must be
66
consistent with the full freedom of use specified in this license.
67
68
  Most GNU software, including some libraries, is covered by the
69
ordinary GNU General Public License.  This license, the GNU Lesser
70
General Public License, applies to certain designated libraries, and
71
is quite different from the ordinary General Public License.  We use
72
this license for certain libraries in order to permit linking those
73
libraries into non-free programs.
74
75
  When a program is linked with a library, whether statically or using
76
a shared library, the combination of the two is legally speaking a
77
combined work, a derivative of the original library.  The ordinary
78
General Public License therefore permits such linking only if the
79
entire combination fits its criteria of freedom.  The Lesser General
80
Public License permits more lax criteria for linking other code with
81
the library.
82
83
  We call this license the "Lesser" General Public License because it
84
does Less to protect the user's freedom than the ordinary General
85
Public License.  It also provides other free software developers Less
86
of an advantage over competing non-free programs.  These disadvantages
87
are the reason we use the ordinary General Public License for many
88
libraries.  However, the Lesser license provides advantages in certain
89
special circumstances.
90
91
  For example, on rare occasions, there may be a special need to
92
encourage the widest possible use of a certain library, so that it
93
becomes a de-facto standard.  To achieve this, non-free programs must
94
be allowed to use the library.  A more frequent case is that a free
95
library does the same job as widely used non-free libraries.  In this
96
case, there is little to gain by limiting the free library to free
97
software only, so we use the Lesser General Public License.
98
99
  In other cases, permission to use a particular library in non-free
100
programs enables a greater number of people to use a large body of
101
free software.  For example, permission to use the GNU C Library in
102
non-free programs enables many more people to use the whole GNU
103
operating system, as well as its variant, the GNU/Linux operating
104
system.
105
106
  Although the Lesser General Public License is Less protective of the
107
users' freedom, it does ensure that the user of a program that is
108
linked with the Library has the freedom and the wherewithal to run
109
that program using a modified version of the Library.
110
111
  The precise terms and conditions for copying, distribution and
112
modification follow.  Pay close attention to the difference between a
113
"work based on the library" and a "work that uses the library".  The
114
former contains code derived from the library, whereas the latter must
115
be combined with the library in order to run.
116
117
                  GNU LESSER GENERAL PUBLIC LICENSE
118
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
119
120
  0. This License Agreement applies to any software library or other
121
program which contains a notice placed by the copyright holder or
122
other authorized party saying it may be distributed under the terms of
123
this Lesser General Public License (also called "this License").
124
Each licensee is addressed as "you".
125
126
  A "library" means a collection of software functions and/or data
127
prepared so as to be conveniently linked with application programs
128
(which use some of those functions and data) to form executables.
129
130
  The "Library", below, refers to any such software library or work
131
which has been distributed under these terms.  A "work based on the
132
Library" means either the Library or any derivative work under
133
copyright law: that is to say, a work containing the Library or a
134
portion of it, either verbatim or with modifications and/or translated
135
straightforwardly into another language.  (Hereinafter, translation is
136
included without limitation in the term "modification".)
137
138
  "Source code" for a work means the preferred form of the work for
139
making modifications to it.  For a library, complete source code means
140
all the source code for all modules it contains, plus any associated
141
interface definition files, plus the scripts used to control
142
compilation and installation of the library.
143
144
  Activities other than copying, distribution and modification are not
145
covered by this License; they are outside its scope.  The act of
146
running a program using the Library is not restricted, and output from
147
such a program is covered only if its contents constitute a work based
148
on the Library (independent of the use of the Library in a tool for
149
writing it).  Whether that is true depends on what the Library does
150
and what the program that uses the Library does.
151
152
  1. You may copy and distribute verbatim copies of the Library's
153
complete source code as you receive it, in any medium, provided that
154
you conspicuously and appropriately publish on each copy an
155
appropriate copyright notice and disclaimer of warranty; keep intact
156
all the notices that refer to this License and to the absence of any
157
warranty; and distribute a copy of this License along with the
158
Library.
159
160
  You may charge a fee for the physical act of transferring a copy,
161
and you may at your option offer warranty protection in exchange for a
162
fee.
163
164
  2. You may modify your copy or copies of the Library or any portion
165
of it, thus forming a work based on the Library, and copy and
166
distribute such modifications or work under the terms of Section 1
167
above, provided that you also meet all of these conditions:
168
169
    a) The modified work must itself be a software library.
170
171
    b) You must cause the files modified to carry prominent notices
172
    stating that you changed the files and the date of any change.
173
174
    c) You must cause the whole of the work to be licensed at no
175
    charge to all third parties under the terms of this License.
176
177
    d) If a facility in the modified Library refers to a function or a
178
    table of data to be supplied by an application program that uses
179
    the facility, other than as an argument passed when the facility
180
    is invoked, then you must make a good faith effort to ensure that,
181
    in the event an application does not supply such function or
182
    table, the facility still operates, and performs whatever part of
183
    its purpose remains meaningful.
184
185
    (For example, a function in a library to compute square roots has
186
    a purpose that is entirely well-defined independent of the
187
    application.  Therefore, Subsection 2d requires that any
188
    application-supplied function or table used by this function must
189
    be optional: if the application does not supply it, the square
190
    root function must still compute square roots.)
191
192
These requirements apply to the modified work as a whole.  If
193
identifiable sections of that work are not derived from the Library,
194
and can be reasonably considered independent and separate works in
195
themselves, then this License, and its terms, do not apply to those
196
sections when you distribute them as separate works.  But when you
197
distribute the same sections as part of a whole which is a work based
198
on the Library, the distribution of the whole must be on the terms of
199
this License, whose permissions for other licensees extend to the
200
entire whole, and thus to each and every part regardless of who wrote
201
it.
202
203
Thus, it is not the intent of this section to claim rights or contest
204
your rights to work written entirely by you; rather, the intent is to
205
exercise the right to control the distribution of derivative or
206
collective works based on the Library.
207
208
In addition, mere aggregation of another work not based on the Library
209
with the Library (or with a work based on the Library) on a volume of
210
a storage or distribution medium does not bring the other work under
211
the scope of this License.
212
213
  3. You may opt to apply the terms of the ordinary GNU General Public
214
License instead of this License to a given copy of the Library.  To do
215
this, you must alter all the notices that refer to this License, so
216
that they refer to the ordinary GNU General Public License, version 2,
217
instead of to this License.  (If a newer version than version 2 of the
218
ordinary GNU General Public License has appeared, then you can specify
219
that version instead if you wish.)  Do not make any other change in
220
these notices.
221
222
  Once this change is made in a given copy, it is irreversible for
223
that copy, so the ordinary GNU General Public License applies to all
224
subsequent copies and derivative works made from that copy.
225
226
  This option is useful when you wish to copy part of the code of
227
the Library into a program that is not a library.
228
229
  4. You may copy and distribute the Library (or a portion or
230
derivative of it, under Section 2) in object code or executable form
231
under the terms of Sections 1 and 2 above provided that you accompany
232
it with the complete corresponding machine-readable source code, which
233
must be distributed under the terms of Sections 1 and 2 above on a
234
medium customarily used for software interchange.
235
236
  If distribution of object code is made by offering access to copy
237
from a designated place, then offering equivalent access to copy the
238
source code from the same place satisfies the requirement to
239
distribute the source code, even though third parties are not
240
compelled to copy the source along with the object code.
241
242
  5. A program that contains no derivative of any portion of the
243
Library, but is designed to work with the Library by being compiled or
244
linked with it, is called a "work that uses the Library".  Such a
245
work, in isolation, is not a derivative work of the Library, and
246
therefore falls outside the scope of this License.
247
248
  However, linking a "work that uses the Library" with the Library
249
creates an executable that is a derivative of the Library (because it
250
contains portions of the Library), rather than a "work that uses the
251
library".  The executable is therefore covered by this License.
252
Section 6 states terms for distribution of such executables.
253
254
  When a "work that uses the Library" uses material from a header file
255
that is part of the Library, the object code for the work may be a
256
derivative work of the Library even though the source code is not.
257
Whether this is true is especially significant if the work can be
258
linked without the Library, or if the work is itself a library.  The
259
threshold for this to be true is not precisely defined by law.
260
261
  If such an object file uses only numerical parameters, data
262
structure layouts and accessors, and small macros and small inline
263
functions (ten lines or less in length), then the use of the object
264
file is unrestricted, regardless of whether it is legally a derivative
265
work.  (Executables containing this object code plus portions of the
266
Library will still fall under Section 6.)
267
268
  Otherwise, if the work is a derivative of the Library, you may
269
distribute the object code for the work under the terms of Section 6.
270
Any executables containing that work also fall under Section 6,
271
whether or not they are linked directly with the Library itself.
272
273
  6. As an exception to the Sections above, you may also combine or
274
link a "work that uses the Library" with the Library to produce a
275
work containing portions of the Library, and distribute that work
276
under terms of your choice, provided that the terms permit
277
modification of the work for the customer's own use and reverse
278
engineering for debugging such modifications.
279
280
  You must give prominent notice with each copy of the work that the
281
Library is used in it and that the Library and its use are covered by
282
this License.  You must supply a copy of this License.  If the work
283
during execution displays copyright notices, you must include the
284
copyright notice for the Library among them, as well as a reference
285
directing the user to the copy of this License.  Also, you must do one
286
of these things:
287
288
    a) Accompany the work with the complete corresponding
289
    machine-readable source code for the Library including whatever
290
    changes were used in the work (which must be distributed under
291
    Sections 1 and 2 above); and, if the work is an executable linked
292
    with the Library, with the complete machine-readable "work that
293
    uses the Library", as object code and/or source code, so that the
294
    user can modify the Library and then relink to produce a modified
295
    executable containing the modified Library.  (It is understood
296
    that the user who changes the contents of definitions files in the
297
    Library will not necessarily be able to recompile the application
298
    to use the modified definitions.)
299
300
    b) Use a suitable shared library mechanism for linking with the
301
    Library.  A suitable mechanism is one that (1) uses at run time a
302
    copy of the library already present on the user's computer system,
303
    rather than copying library functions into the executable, and (2)
304
    will operate properly with a modified version of the library, if
305
    the user installs one, as long as the modified version is
306
    interface-compatible with the version that the work was made with.
307
308
    c) Accompany the work with a written offer, valid for at least
309
    three years, to give the same user the materials specified in
310
    Subsection 6a, above, for a charge no more than the cost of
311
    performing this distribution.
312
313
    d) If distribution of the work is made by offering access to copy
314
    from a designated place, offer equivalent access to copy the above
315
    specified materials from the same place.
316
317
    e) Verify that the user has already received a copy of these
318
    materials or that you have already sent this user a copy.
319
320
  For an executable, the required form of the "work that uses the
321
Library" must include any data and utility programs needed for
322
reproducing the executable from it.  However, as a special exception,
323
the materials to be distributed need not include anything that is
324
normally distributed (in either source or binary form) with the major
325
components (compiler, kernel, and so on) of the operating system on
326
which the executable runs, unless that component itself accompanies
327
the executable.
328
329
  It may happen that this requirement contradicts the license
330
restrictions of other proprietary libraries that do not normally
331
accompany the operating system.  Such a contradiction means you cannot
332
use both them and the Library together in an executable that you
333
distribute.
334
335
  7. You may place library facilities that are a work based on the
336
Library side-by-side in a single library together with other library
337
facilities not covered by this License, and distribute such a combined
338
library, provided that the separate distribution of the work based on
339
the Library and of the other library facilities is otherwise
340
permitted, and provided that you do these two things:
341
342
    a) Accompany the combined library with a copy of the same work
343
    based on the Library, uncombined with any other library
344
    facilities.  This must be distributed under the terms of the
345
    Sections above.
346
347
    b) Give prominent notice with the combined library of the fact
348
    that part of it is a work based on the Library, and explaining
349
    where to find the accompanying uncombined form of the same work.
350
351
  8. You may not copy, modify, sublicense, link with, or distribute
352
the Library except as expressly provided under this License.  Any
353
attempt otherwise to copy, modify, sublicense, link with, or
354
distribute the Library is void, and will automatically terminate your
355
rights under this License.  However, parties who have received copies,
356
or rights, from you under this License will not have their licenses
357
terminated so long as such parties remain in full compliance.
358
359
  9. You are not required to accept this License, since you have not
360
signed it.  However, nothing else grants you permission to modify or
361
distribute the Library or its derivative works.  These actions are
362
prohibited by law if you do not accept this License.  Therefore, by
363
modifying or distributing the Library (or any work based on the
364
Library), you indicate your acceptance of this License to do so, and
365
all its terms and conditions for copying, distributing or modifying
366
the Library or works based on it.
367
368
  10. Each time you redistribute the Library (or any work based on the
369
Library), the recipient automatically receives a license from the
370
original licensor to copy, distribute, link with or modify the Library
371
subject to these terms and conditions.  You may not impose any further
372
restrictions on the recipients' exercise of the rights granted herein.
373
You are not responsible for enforcing compliance by third parties with
374
this License.
375
376
  11. If, as a consequence of a court judgment or allegation of patent
377
infringement or for any other reason (not limited to patent issues),
378
conditions are imposed on you (whether by court order, agreement or
379
otherwise) that contradict the conditions of this License, they do not
380
excuse you from the conditions of this License.  If you cannot
381
distribute so as to satisfy simultaneously your obligations under this
382
License and any other pertinent obligations, then as a consequence you
383
may not distribute the Library at all.  For example, if a patent
384
license would not permit royalty-free redistribution of the Library by
385
all those who receive copies directly or indirectly through you, then
386
the only way you could satisfy both it and this License would be to
387
refrain entirely from distribution of the Library.
388
389
If any portion of this section is held invalid or unenforceable under
390
any particular circumstance, the balance of the section is intended to
391
apply, and the section as a whole is intended to apply in other
392
circumstances.
393
394
It is not the purpose of this section to induce you to infringe any
395
patents or other property right claims or to contest validity of any
396
such claims; this section has the sole purpose of protecting the
397
integrity of the free software distribution system which is
398
implemented by public license practices.  Many people have made
399
generous contributions to the wide range of software distributed
400
through that system in reliance on consistent application of that
401
system; it is up to the author/donor to decide if he or she is willing
402
to distribute software through any other system and a licensee cannot
403
impose that choice.
404
405
This section is intended to make thoroughly clear what is believed to
406
be a consequence of the rest of this License.
407
408
  12. If the distribution and/or use of the Library is restricted in
409
certain countries either by patents or by copyrighted interfaces, the
410
original copyright holder who places the Library under this License
411
may add an explicit geographical distribution limitation excluding those
412
countries, so that distribution is permitted only in or among
413
countries not thus excluded.  In such case, this License incorporates
414
the limitation as if written in the body of this License.
415
416
  13. The Free Software Foundation may publish revised and/or new
417
versions of the Lesser General Public License from time to time.
418
Such new versions will be similar in spirit to the present version,
419
but may differ in detail to address new problems or concerns.
420
421
Each version is given a distinguishing version number.  If the Library
422
specifies a version number of this License which applies to it and
423
"any later version", you have the option of following the terms and
424
conditions either of that version or of any later version published by
425
the Free Software Foundation.  If the Library does not specify a
426
license version number, you may choose any version ever published by
427
the Free Software Foundation.
428
429
  14. If you wish to incorporate parts of the Library into other free
430
programs whose distribution conditions are incompatible with these,
431
write to the author to ask for permission.  For software which is
432
copyrighted by the Free Software Foundation, write to the Free
433
Software Foundation; we sometimes make exceptions for this.  Our
434
decision will be guided by the two goals of preserving the free status
435
of all derivatives of our free software and of promoting the sharing
436
and reuse of software generally.
437
438
                            NO WARRANTY
439
440
  15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
441
WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
442
EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
443
OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY
444
KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
445
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
446
PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
447
LIBRARY IS WITH YOU.  SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
448
THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
449
450
  16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
451
WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
452
AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
453
FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
454
CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
455
LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
456
RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
457
FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
458
SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
459
DAMAGES.
460
461
                     END OF TERMS AND CONDITIONS
462
463
           How to Apply These Terms to Your New Libraries
464
465
  If you develop a new library, and you want it to be of the greatest
466
possible use to the public, we recommend making it free software that
467
everyone can redistribute and change.  You can do so by permitting
468
redistribution under these terms (or, alternatively, under the terms
469
of the ordinary General Public License).
470
471
  To apply these terms, attach the following notices to the library.
472
It is safest to attach them to the start of each source file to most
473
effectively convey the exclusion of warranty; and each file should
474
have at least the "copyright" line and a pointer to where the full
475
notice is found.
476
477
478
    <one line to give the library's name and a brief idea of what it does.>
479
    Copyright (C) <year>  <name of author>
480
481
    This library is free software; you can redistribute it and/or
482
    modify it under the terms of the GNU Lesser General Public
483
    License as published by the Free Software Foundation; either
484
    version 2.1 of the License, or (at your option) any later version.
485
486
    This library is distributed in the hope that it will be useful,
487
    but WITHOUT ANY WARRANTY; without even the implied warranty of
488
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
489
    Lesser General Public License for more details.
490
491
    You should have received a copy of the GNU Lesser General Public
492
    License along with this library; if not, write to the Free Software
493
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
494
495
Also add information on how to contact you by electronic and paper mail.
496
497
You should also get your employer (if you work as a programmer) or
498
your school, if any, to sign a "copyright disclaimer" for the library,
499
if necessary.  Here is a sample; alter the names:
500
501
  Yoyodyne, Inc., hereby disclaims all copyright interest in the
502
  library `Frob' (a library for tweaking knobs) written by James
503
  Random Hacker.
504
505
  <signature of Ty Coon>, 1 April 1990
506
  Ty Coon, President of Vice
507
508
That's all there is to it!
509