2 GNU GENERAL PUBLIC LICENSE
5 Copyright (C) 1989, 1991 Free Software Foundation, Inc.
6 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
7 Everyone is permitted to copy and distribute verbatim copies
8 of this license document, but changing it is not allowed.
12 The licenses for most software are designed to take away your
13 freedom to share and change it. By contrast, the GNU General Public
14 License is intended to guarantee your freedom to share and change free
15 software--to make sure the software is free for all its users. This
16 General Public License applies to most of the Free Software
17 Foundation's software and to any other program whose authors commit to
18 using it. (Some other Free Software Foundation software is covered by
19 the GNU Library General Public License instead.) You can apply it to
22 When we speak of free software, we are referring to freedom, not
23 price. Our General Public Licenses are designed to make sure that you
24 have the freedom to distribute copies of free software (and charge for
25 this service if you wish), that you receive source code or can get it
26 if you want it, that you can change the software or use pieces of it
27 in new free programs; and that you know you can do these things.
29 To protect your rights, we need to make restrictions that forbid
30 anyone to deny you these rights or to ask you to surrender the rights.
31 These restrictions translate to certain responsibilities for you if you
32 distribute copies of the software, or if you modify it.
34 For example, if you distribute copies of such a program, whether
35 gratis or for a fee, you must give the recipients all the rights that
36 you have. You must make sure that they, too, receive or can get the
37 source code. And you must show them these terms so they know their
40 We protect your rights with two steps: (1) copyright the software, and
41 (2) offer you this license which gives you legal permission to copy,
42 distribute and/or modify the software.
44 Also, for each author's protection and ours, we want to make certain
45 that everyone understands that there is no warranty for this free
46 software. If the software is modified by someone else and passed on, we
47 want its recipients to know that what they have is not the original, so
48 that any problems introduced by others will not reflect on the original
51 Finally, any free program is threatened constantly by software
52 patents. We wish to avoid the danger that redistributors of a free
53 program will individually obtain patent licenses, in effect making the
54 program proprietary. To prevent this, we have made it clear that any
55 patent must be licensed for everyone's free use or not licensed at all.
57 The precise terms and conditions for copying, distribution and
60 GNU GENERAL PUBLIC LICENSE
61 TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
63 0. This License applies to any program or other work which contains
64 a notice placed by the copyright holder saying it may be distributed
65 under the terms of this General Public License. The "Program", below,
66 refers to any such program or work, and a "work based on the Program"
67 means either the Program or any derivative work under copyright law:
68 that is to say, a work containing the Program or a portion of it,
69 either verbatim or with modifications and/or translated into another
70 language. (Hereinafter, translation is included without limitation in
71 the term "modification".) Each licensee is addressed as "you".
73 Activities other than copying, distribution and modification are not
74 covered by this License; they are outside its scope. The act of
75 running the Program is not restricted, and the output from the Program
76 is covered only if its contents constitute a work based on the
77 Program (independent of having been made by running the Program).
78 Whether that is true depends on what the Program does.
80 1. You may copy and distribute verbatim copies of the Program's
81 source code as you receive it, in any medium, provided that you
82 conspicuously and appropriately publish on each copy an appropriate
83 copyright notice and disclaimer of warranty; keep intact all the
84 notices that refer to this License and to the absence of any warranty;
85 and give any other recipients of the Program a copy of this License
86 along with the Program.
88 You may charge a fee for the physical act of transferring a copy, and
89 you may at your option offer warranty protection in exchange for a fee.
91 2. You may modify your copy or copies of the Program or any portion
92 of it, thus forming a work based on the Program, and copy and
93 distribute such modifications or work under the terms of Section 1
94 above, provided that you also meet all of these conditions:
96 a) You must cause the modified files to carry prominent notices
97 stating that you changed the files and the date of any change.
99 b) You must cause any work that you distribute or publish, that in
100 whole or in part contains or is derived from the Program or any
101 part thereof, to be licensed as a whole at no charge to all third
102 parties under the terms of this License.
104 c) If the modified program normally reads commands interactively
105 when run, you must cause it, when started running for such
106 interactive use in the most ordinary way, to print or display an
107 announcement including an appropriate copyright notice and a
108 notice that there is no warranty (or else, saying that you provide
109 a warranty) and that users may redistribute the program under
110 these conditions, and telling the user how to view a copy of this
111 License. (Exception: if the Program itself is interactive but
112 does not normally print such an announcement, your work based on
113 the Program is not required to print an announcement.)
115 These requirements apply to the modified work as a whole. If
116 identifiable sections of that work are not derived from the Program,
117 and can be reasonably considered independent and separate works in
118 themselves, then this License, and its terms, do not apply to those
119 sections when you distribute them as separate works. But when you
120 distribute the same sections as part of a whole which is a work based
121 on the Program, the distribution of the whole must be on the terms of
122 this License, whose permissions for other licensees extend to the
123 entire whole, and thus to each and every part regardless of who wrote it.
125 Thus, it is not the intent of this section to claim rights or contest
126 your rights to work written entirely by you; rather, the intent is to
127 exercise the right to control the distribution of derivative or
128 collective works based on the Program.
130 In addition, mere aggregation of another work not based on the Program
131 with the Program (or with a work based on the Program) on a volume of
132 a storage or distribution medium does not bring the other work under
133 the scope of this License.
135 3. You may copy and distribute the Program (or a work based on it,
136 under Section 2) in object code or executable form under the terms of
137 Sections 1 and 2 above provided that you also do one of the following:
139 a) Accompany it with the complete corresponding machine-readable
140 source code, which must be distributed under the terms of Sections
141 1 and 2 above on a medium customarily used for software interchange; or,
143 b) Accompany it with a written offer, valid for at least three
144 years, to give any third party, for a charge no more than your
145 cost of physically performing source distribution, a complete
146 machine-readable copy of the corresponding source code, to be
147 distributed under the terms of Sections 1 and 2 above on a medium
148 customarily used for software interchange; or,
150 c) Accompany it with the information you received as to the offer
151 to distribute corresponding source code. (This alternative is
152 allowed only for noncommercial distribution and only if you
153 received the program in object code or executable form with such
154 an offer, in accord with Subsection b above.)
156 The source code for a work means the preferred form of the work for
157 making modifications to it. For an executable work, complete source
158 code means all the source code for all modules it contains, plus any
159 associated interface definition files, plus the scripts used to
160 control compilation and installation of the executable. However, as a
161 special exception, the source code distributed need not include
162 anything that is normally distributed (in either source or binary
163 form) with the major components (compiler, kernel, and so on) of the
164 operating system on which the executable runs, unless that component
165 itself accompanies the executable.
167 If distribution of executable or object code is made by offering
168 access to copy from a designated place, then offering equivalent
169 access to copy the source code from the same place counts as
170 distribution of the source code, even though third parties are not
171 compelled to copy the source along with the object code.
173 4. You may not copy, modify, sublicense, or distribute the Program
174 except as expressly provided under this License. Any attempt
175 otherwise to copy, modify, sublicense or distribute the Program is
176 void, and will automatically terminate your rights under this License.
177 However, parties who have received copies, or rights, from you under
178 this License will not have their licenses terminated so long as such
179 parties remain in full compliance.
181 5. You are not required to accept this License, since you have not
182 signed it. However, nothing else grants you permission to modify or
183 distribute the Program or its derivative works. These actions are
184 prohibited by law if you do not accept this License. Therefore, by
185 modifying or distributing the Program (or any work based on the
186 Program), you indicate your acceptance of this License to do so, and
187 all its terms and conditions for copying, distributing or modifying
188 the Program or works based on it.
190 6. Each time you redistribute the Program (or any work based on the
191 Program), the recipient automatically receives a license from the
192 original licensor to copy, distribute or modify the Program subject to
193 these terms and conditions. You may not impose any further
194 restrictions on the recipients' exercise of the rights granted herein.
195 You are not responsible for enforcing compliance by third parties to
198 7. If, as a consequence of a court judgment or allegation of patent
199 infringement or for any other reason (not limited to patent issues),
200 conditions are imposed on you (whether by court order, agreement or
201 otherwise) that contradict the conditions of this License, they do not
202 excuse you from the conditions of this License. If you cannot
203 distribute so as to satisfy simultaneously your obligations under this
204 License and any other pertinent obligations, then as a consequence you
205 may not distribute the Program at all. For example, if a patent
206 license would not permit royalty-free redistribution of the Program by
207 all those who receive copies directly or indirectly through you, then
208 the only way you could satisfy both it and this License would be to
209 refrain entirely from distribution of the Program.
211 If any portion of this section is held invalid or unenforceable under
212 any particular circumstance, the balance of the section is intended to
213 apply and the section as a whole is intended to apply in other
216 It is not the purpose of this section to induce you to infringe any
217 patents or other property right claims or to contest validity of any
218 such claims; this section has the sole purpose of protecting the
219 integrity of the free software distribution system, which is
220 implemented by public license practices. Many people have made
221 generous contributions to the wide range of software distributed
222 through that system in reliance on consistent application of that
223 system; it is up to the author/donor to decide if he or she is willing
224 to distribute software through any other system and a licensee cannot
227 This section is intended to make thoroughly clear what is believed to
228 be a consequence of the rest of this License.
230 8. If the distribution and/or use of the Program is restricted in
231 certain countries either by patents or by copyrighted interfaces, the
232 original copyright holder who places the Program under this License
233 may add an explicit geographical distribution limitation excluding
234 those countries, so that distribution is permitted only in or among
235 countries not thus excluded. In such case, this License incorporates
236 the limitation as if written in the body of this License.
238 9. The Free Software Foundation may publish revised and/or new versions
239 of the General Public License from time to time. Such new versions will
240 be similar in spirit to the present version, but may differ in detail to
241 address new problems or concerns.
243 Each version is given a distinguishing version number. If the Program
244 specifies a version number of this License which applies to it and "any
245 later version", you have the option of following the terms and conditions
246 either of that version or of any later version published by the Free
247 Software Foundation. If the Program does not specify a version number of
248 this License, you may choose any version ever published by the Free Software
251 10. If you wish to incorporate parts of the Program into other free
252 programs whose distribution conditions are different, write to the author
253 to ask for permission. For software which is copyrighted by the Free
254 Software Foundation, write to the Free Software Foundation; we sometimes
255 make exceptions for this. Our decision will be guided by the two goals
256 of preserving the free status of all derivatives of our free software and
257 of promoting the sharing and reuse of software generally.
261 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
262 FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
263 OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
264 PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
265 OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
266 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
267 TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
268 PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
269 REPAIR OR CORRECTION.
271 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
272 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
273 REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
274 INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
275 OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
276 TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
277 YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
278 PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
279 POSSIBILITY OF SUCH DAMAGES.
281 END OF TERMS AND CONDITIONS
283 How to Apply These Terms to Your New Programs
285 If you develop a new program, and you want it to be of the greatest
286 possible use to the public, the best way to achieve this is to make it
287 free software which everyone can redistribute and change under these terms.
289 To do so, attach the following notices to the program. It is safest
290 to attach them to the start of each source file to most effectively
291 convey the exclusion of warranty; and each file should have at least
292 the "copyright" line and a pointer to where the full notice is found.
294 <one line to give the program's name and a brief idea of what it does.>
295 Copyright (C) 19yy <name of author>
297 This program is free software; you can redistribute it and/or modify
298 it under the terms of the GNU General Public License as published by
299 the Free Software Foundation; either version 2 of the License, or
300 (at your option) any later version.
302 This program is distributed in the hope that it will be useful,
303 but WITHOUT ANY WARRANTY; without even the implied warranty of
304 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
305 GNU General Public License for more details.
307 You should have received a copy of the GNU General Public License
308 along with this program; if not, write to the Free Software
309 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
312 Also add information on how to contact you by electronic and paper mail.
314 If the program is interactive, make it output a short notice like this
315 when it starts in an interactive mode:
317 Gnomovision version 69, Copyright (C) 19yy name of author
318 Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
319 This is free software, and you are welcome to redistribute it
320 under certain conditions; type `show c' for details.
322 The hypothetical commands `show w' and `show c' should show the appropriate
323 parts of the General Public License. Of course, the commands you use may
324 be called something other than `show w' and `show c'; they could even be
325 mouse-clicks or menu items--whatever suits your program.
327 You should also get your employer (if you work as a programmer) or your
328 school, if any, to sign a "copyright disclaimer" for the program, if
329 necessary. Here is a sample; alter the names:
331 Yoyodyne, Inc., hereby disclaims all copyright interest in the program
332 `Gnomovision' (which makes passes at compilers) written by James Hacker.
334 <signature of Ty Coon>, 1 April 1989
335 Ty Coon, President of Vice
337 This General Public License does not permit incorporating your program into
338 proprietary programs. If your program is a subroutine library, you may
339 consider it more useful to permit linking proprietary applications with the
340 library. If this is what you want to do, use the GNU Library General
341 Public License instead of this License.
343 -----------------------------------------
345 * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
346 * All rights reserved.
348 * Redistribution and use in source and binary forms, with or without
349 * modification, are permitted provided that the following conditions
351 * 1. Redistributions of source code must retain the above copyright
352 * notice, this list of conditions and the following disclaimer.
353 * 2. Redistributions in binary form must reproduce the above copyright
354 * notice, this list of conditions and the following disclaimer in the
355 * documentation and/or other materials provided with the distribution.
356 * 3. The name of the author may not be used to endorse or promote products
357 * derived from this software without specific prior written permission.
359 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
360 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
361 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
362 * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
363 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
364 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
365 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
366 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
367 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
368 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
370 --------------------------------------
372 GNU LESSER GENERAL PUBLIC LICENSE
373 Version 2.1, February 1999
375 Copyright (C) 1991, 1999 Free Software Foundation, Inc.
376 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
377 Everyone is permitted to copy and distribute verbatim copies
378 of this license document, but changing it is not allowed.
380 [This is the first released version of the Lesser GPL. It also counts
381 as the successor of the GNU Library Public License, version 2, hence
382 the version number 2.1.]
386 The licenses for most software are designed to take away your
387 freedom to share and change it. By contrast, the GNU General Public
388 Licenses are intended to guarantee your freedom to share and change
389 free software--to make sure the software is free for all its users.
391 This license, the Lesser General Public License, applies to some
392 specially designated software packages--typically libraries--of the
393 Free Software Foundation and other authors who decide to use it. You
394 can use it too, but we suggest you first think carefully about whether
395 this license or the ordinary General Public License is the better
396 strategy to use in any particular case, based on the explanations below.
398 When we speak of free software, we are referring to freedom of use,
399 not price. Our General Public Licenses are designed to make sure that
400 you have the freedom to distribute copies of free software (and charge
401 for this service if you wish); that you receive source code or can get
402 it if you want it; that you can change the software and use pieces of
403 it in new free programs; and that you are informed that you can do
406 To protect your rights, we need to make restrictions that forbid
407 distributors to deny you these rights or to ask you to surrender these
408 rights. These restrictions translate to certain responsibilities for
409 you if you distribute copies of the library or if you modify it.
411 For example, if you distribute copies of the library, whether gratis
412 or for a fee, you must give the recipients all the rights that we gave
413 you. You must make sure that they, too, receive or can get the source
414 code. If you link other code with the library, you must provide
415 complete object files to the recipients, so that they can relink them
416 with the library after making changes to the library and recompiling
417 it. And you must show them these terms so they know their rights.
419 We protect your rights with a two-step method: (1) we copyright the
420 library, and (2) we offer you this license, which gives you legal
421 permission to copy, distribute and/or modify the library.
423 To protect each distributor, we want to make it very clear that
424 there is no warranty for the free library. Also, if the library is
425 modified by someone else and passed on, the recipients should know
426 that what they have is not the original version, so that the original
427 author's reputation will not be affected by problems that might be
428 introduced by others.
430 Finally, software patents pose a constant threat to the existence of
431 any free program. We wish to make sure that a company cannot
432 effectively restrict the users of a free program by obtaining a
433 restrictive license from a patent holder. Therefore, we insist that
434 any patent license obtained for a version of the library must be
435 consistent with the full freedom of use specified in this license.
437 Most GNU software, including some libraries, is covered by the
438 ordinary GNU General Public License. This license, the GNU Lesser
439 General Public License, applies to certain designated libraries, and
440 is quite different from the ordinary General Public License. We use
441 this license for certain libraries in order to permit linking those
442 libraries into non-free programs.
444 When a program is linked with a library, whether statically or using
445 a shared library, the combination of the two is legally speaking a
446 combined work, a derivative of the original library. The ordinary
447 General Public License therefore permits such linking only if the
448 entire combination fits its criteria of freedom. The Lesser General
449 Public License permits more lax criteria for linking other code with
452 We call this license the "Lesser" General Public License because it
453 does Less to protect the user's freedom than the ordinary General
454 Public License. It also provides other free software developers Less
455 of an advantage over competing non-free programs. These disadvantages
456 are the reason we use the ordinary General Public License for many
457 libraries. However, the Lesser license provides advantages in certain
458 special circumstances.
460 For example, on rare occasions, there may be a special need to
461 encourage the widest possible use of a certain library, so that it becomes
462 a de-facto standard. To achieve this, non-free programs must be
463 allowed to use the library. A more frequent case is that a free
464 library does the same job as widely used non-free libraries. In this
465 case, there is little to gain by limiting the free library to free
466 software only, so we use the Lesser General Public License.
468 In other cases, permission to use a particular library in non-free
469 programs enables a greater number of people to use a large body of
470 free software. For example, permission to use the GNU C Library in
471 non-free programs enables many more people to use the whole GNU
472 operating system, as well as its variant, the GNU/Linux operating
475 Although the Lesser General Public License is Less protective of the
476 users' freedom, it does ensure that the user of a program that is
477 linked with the Library has the freedom and the wherewithal to run
478 that program using a modified version of the Library.
480 The precise terms and conditions for copying, distribution and
481 modification follow. Pay close attention to the difference between a
482 "work based on the library" and a "work that uses the library". The
483 former contains code derived from the library, whereas the latter must
484 be combined with the library in order to run.
486 GNU LESSER GENERAL PUBLIC LICENSE
487 TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
489 0. This License Agreement applies to any software library or other
490 program which contains a notice placed by the copyright holder or
491 other authorized party saying it may be distributed under the terms of
492 this Lesser General Public License (also called "this License").
493 Each licensee is addressed as "you".
495 A "library" means a collection of software functions and/or data
496 prepared so as to be conveniently linked with application programs
497 (which use some of those functions and data) to form executables.
499 The "Library", below, refers to any such software library or work
500 which has been distributed under these terms. A "work based on the
501 Library" means either the Library or any derivative work under
502 copyright law: that is to say, a work containing the Library or a
503 portion of it, either verbatim or with modifications and/or translated
504 straightforwardly into another language. (Hereinafter, translation is
505 included without limitation in the term "modification".)
507 "Source code" for a work means the preferred form of the work for
508 making modifications to it. For a library, complete source code means
509 all the source code for all modules it contains, plus any associated
510 interface definition files, plus the scripts used to control compilation
511 and installation of the library.
513 Activities other than copying, distribution and modification are not
514 covered by this License; they are outside its scope. The act of
515 running a program using the Library is not restricted, and output from
516 such a program is covered only if its contents constitute a work based
517 on the Library (independent of the use of the Library in a tool for
518 writing it). Whether that is true depends on what the Library does
519 and what the program that uses the Library does.
521 1. You may copy and distribute verbatim copies of the Library's
522 complete source code as you receive it, in any medium, provided that
523 you conspicuously and appropriately publish on each copy an
524 appropriate copyright notice and disclaimer of warranty; keep intact
525 all the notices that refer to this License and to the absence of any
526 warranty; and distribute a copy of this License along with the
529 You may charge a fee for the physical act of transferring a copy,
530 and you may at your option offer warranty protection in exchange for a
533 2. You may modify your copy or copies of the Library or any portion
534 of it, thus forming a work based on the Library, and copy and
535 distribute such modifications or work under the terms of Section 1
536 above, provided that you also meet all of these conditions:
538 a) The modified work must itself be a software library.
540 b) You must cause the files modified to carry prominent notices
541 stating that you changed the files and the date of any change.
543 c) You must cause the whole of the work to be licensed at no
544 charge to all third parties under the terms of this License.
546 d) If a facility in the modified Library refers to a function or a
547 table of data to be supplied by an application program that uses
548 the facility, other than as an argument passed when the facility
549 is invoked, then you must make a good faith effort to ensure that,
550 in the event an application does not supply such function or
551 table, the facility still operates, and performs whatever part of
552 its purpose remains meaningful.
554 (For example, a function in a library to compute square roots has
555 a purpose that is entirely well-defined independent of the
556 application. Therefore, Subsection 2d requires that any
557 application-supplied function or table used by this function must
558 be optional: if the application does not supply it, the square
559 root function must still compute square roots.)
561 These requirements apply to the modified work as a whole. If
562 identifiable sections of that work are not derived from the Library,
563 and can be reasonably considered independent and separate works in
564 themselves, then this License, and its terms, do not apply to those
565 sections when you distribute them as separate works. But when you
566 distribute the same sections as part of a whole which is a work based
567 on the Library, the distribution of the whole must be on the terms of
568 this License, whose permissions for other licensees extend to the
569 entire whole, and thus to each and every part regardless of who wrote
572 Thus, it is not the intent of this section to claim rights or contest
573 your rights to work written entirely by you; rather, the intent is to
574 exercise the right to control the distribution of derivative or
575 collective works based on the Library.
577 In addition, mere aggregation of another work not based on the Library
578 with the Library (or with a work based on the Library) on a volume of
579 a storage or distribution medium does not bring the other work under
580 the scope of this License.
582 3. You may opt to apply the terms of the ordinary GNU General Public
583 License instead of this License to a given copy of the Library. To do
584 this, you must alter all the notices that refer to this License, so
585 that they refer to the ordinary GNU General Public License, version 2,
586 instead of to this License. (If a newer version than version 2 of the
587 ordinary GNU General Public License has appeared, then you can specify
588 that version instead if you wish.) Do not make any other change in
591 Once this change is made in a given copy, it is irreversible for
592 that copy, so the ordinary GNU General Public License applies to all
593 subsequent copies and derivative works made from that copy.
595 This option is useful when you wish to copy part of the code of
596 the Library into a program that is not a library.
598 4. You may copy and distribute the Library (or a portion or
599 derivative of it, under Section 2) in object code or executable form
600 under the terms of Sections 1 and 2 above provided that you accompany
601 it with the complete corresponding machine-readable source code, which
602 must be distributed under the terms of Sections 1 and 2 above on a
603 medium customarily used for software interchange.
605 If distribution of object code is made by offering access to copy
606 from a designated place, then offering equivalent access to copy the
607 source code from the same place satisfies the requirement to
608 distribute the source code, even though third parties are not
609 compelled to copy the source along with the object code.
611 5. A program that contains no derivative of any portion of the
612 Library, but is designed to work with the Library by being compiled or
613 linked with it, is called a "work that uses the Library". Such a
614 work, in isolation, is not a derivative work of the Library, and
615 therefore falls outside the scope of this License.
617 However, linking a "work that uses the Library" with the Library
618 creates an executable that is a derivative of the Library (because it
619 contains portions of the Library), rather than a "work that uses the
620 library". The executable is therefore covered by this License.
621 Section 6 states terms for distribution of such executables.
623 When a "work that uses the Library" uses material from a header file
624 that is part of the Library, the object code for the work may be a
625 derivative work of the Library even though the source code is not.
626 Whether this is true is especially significant if the work can be
627 linked without the Library, or if the work is itself a library. The
628 threshold for this to be true is not precisely defined by law.
630 If such an object file uses only numerical parameters, data
631 structure layouts and accessors, and small macros and small inline
632 functions (ten lines or less in length), then the use of the object
633 file is unrestricted, regardless of whether it is legally a derivative
634 work. (Executables containing this object code plus portions of the
635 Library will still fall under Section 6.)
637 Otherwise, if the work is a derivative of the Library, you may
638 distribute the object code for the work under the terms of Section 6.
639 Any executables containing that work also fall under Section 6,
640 whether or not they are linked directly with the Library itself.
642 6. As an exception to the Sections above, you may also combine or
643 link a "work that uses the Library" with the Library to produce a
644 work containing portions of the Library, and distribute that work
645 under terms of your choice, provided that the terms permit
646 modification of the work for the customer's own use and reverse
647 engineering for debugging such modifications.
649 You must give prominent notice with each copy of the work that the
650 Library is used in it and that the Library and its use are covered by
651 this License. You must supply a copy of this License. If the work
652 during execution displays copyright notices, you must include the
653 copyright notice for the Library among them, as well as a reference
654 directing the user to the copy of this License. Also, you must do one
657 a) Accompany the work with the complete corresponding
658 machine-readable source code for the Library including whatever
659 changes were used in the work (which must be distributed under
660 Sections 1 and 2 above); and, if the work is an executable linked
661 with the Library, with the complete machine-readable "work that
662 uses the Library", as object code and/or source code, so that the
663 user can modify the Library and then relink to produce a modified
664 executable containing the modified Library. (It is understood
665 that the user who changes the contents of definitions files in the
666 Library will not necessarily be able to recompile the application
667 to use the modified definitions.)
669 b) Use a suitable shared library mechanism for linking with the
670 Library. A suitable mechanism is one that (1) uses at run time a
671 copy of the library already present on the user's computer system,
672 rather than copying library functions into the executable, and (2)
673 will operate properly with a modified version of the library, if
674 the user installs one, as long as the modified version is
675 interface-compatible with the version that the work was made with.
677 c) Accompany the work with a written offer, valid for at
678 least three years, to give the same user the materials
679 specified in Subsection 6a, above, for a charge no more
680 than the cost of performing this distribution.
682 d) If distribution of the work is made by offering access to copy
683 from a designated place, offer equivalent access to copy the above
684 specified materials from the same place.
686 e) Verify that the user has already received a copy of these
687 materials or that you have already sent this user a copy.
689 For an executable, the required form of the "work that uses the
690 Library" must include any data and utility programs needed for
691 reproducing the executable from it. However, as a special exception,
692 the materials to be distributed need not include anything that is
693 normally distributed (in either source or binary form) with the major
694 components (compiler, kernel, and so on) of the operating system on
695 which the executable runs, unless that component itself accompanies
698 It may happen that this requirement contradicts the license
699 restrictions of other proprietary libraries that do not normally
700 accompany the operating system. Such a contradiction means you cannot
701 use both them and the Library together in an executable that you
704 7. You may place library facilities that are a work based on the
705 Library side-by-side in a single library together with other library
706 facilities not covered by this License, and distribute such a combined
707 library, provided that the separate distribution of the work based on
708 the Library and of the other library facilities is otherwise
709 permitted, and provided that you do these two things:
711 a) Accompany the combined library with a copy of the same work
712 based on the Library, uncombined with any other library
713 facilities. This must be distributed under the terms of the
716 b) Give prominent notice with the combined library of the fact
717 that part of it is a work based on the Library, and explaining
718 where to find the accompanying uncombined form of the same work.
720 8. You may not copy, modify, sublicense, link with, or distribute
721 the Library except as expressly provided under this License. Any
722 attempt otherwise to copy, modify, sublicense, link with, or
723 distribute the Library is void, and will automatically terminate your
724 rights under this License. However, parties who have received copies,
725 or rights, from you under this License will not have their licenses
726 terminated so long as such parties remain in full compliance.
728 9. You are not required to accept this License, since you have not
729 signed it. However, nothing else grants you permission to modify or
730 distribute the Library or its derivative works. These actions are
731 prohibited by law if you do not accept this License. Therefore, by
732 modifying or distributing the Library (or any work based on the
733 Library), you indicate your acceptance of this License to do so, and
734 all its terms and conditions for copying, distributing or modifying
735 the Library or works based on it.
737 10. Each time you redistribute the Library (or any work based on the
738 Library), the recipient automatically receives a license from the
739 original licensor to copy, distribute, link with or modify the Library
740 subject to these terms and conditions. You may not impose any further
741 restrictions on the recipients' exercise of the rights granted herein.
742 You are not responsible for enforcing compliance by third parties with
745 11. If, as a consequence of a court judgment or allegation of patent
746 infringement or for any other reason (not limited to patent issues),
747 conditions are imposed on you (whether by court order, agreement or
748 otherwise) that contradict the conditions of this License, they do not
749 excuse you from the conditions of this License. If you cannot
750 distribute so as to satisfy simultaneously your obligations under this
751 License and any other pertinent obligations, then as a consequence you
752 may not distribute the Library at all. For example, if a patent
753 license would not permit royalty-free redistribution of the Library by
754 all those who receive copies directly or indirectly through you, then
755 the only way you could satisfy both it and this License would be to
756 refrain entirely from distribution of the Library.
758 If any portion of this section is held invalid or unenforceable under any
759 particular circumstance, the balance of the section is intended to apply,
760 and the section as a whole is intended to apply in other circumstances.
762 It is not the purpose of this section to induce you to infringe any
763 patents or other property right claims or to contest validity of any
764 such claims; this section has the sole purpose of protecting the
765 integrity of the free software distribution system which is
766 implemented by public license practices. Many people have made
767 generous contributions to the wide range of software distributed
768 through that system in reliance on consistent application of that
769 system; it is up to the author/donor to decide if he or she is willing
770 to distribute software through any other system and a licensee cannot
773 This section is intended to make thoroughly clear what is believed to
774 be a consequence of the rest of this License.
776 12. If the distribution and/or use of the Library is restricted in
777 certain countries either by patents or by copyrighted interfaces, the
778 original copyright holder who places the Library under this License may add
779 an explicit geographical distribution limitation excluding those countries,
780 so that distribution is permitted only in or among countries not thus
781 excluded. In such case, this License incorporates the limitation as if
782 written in the body of this License.
784 13. The Free Software Foundation may publish revised and/or new
785 versions of the Lesser General Public License from time to time.
786 Such new versions will be similar in spirit to the present version,
787 but may differ in detail to address new problems or concerns.
789 Each version is given a distinguishing version number. If the Library
790 specifies a version number of this License which applies to it and
791 "any later version", you have the option of following the terms and
792 conditions either of that version or of any later version published by
793 the Free Software Foundation. If the Library does not specify a
794 license version number, you may choose any version ever published by
795 the Free Software Foundation.
797 14. If you wish to incorporate parts of the Library into other free
798 programs whose distribution conditions are incompatible with these,
799 write to the author to ask for permission. For software which is
800 copyrighted by the Free Software Foundation, write to the Free
801 Software Foundation; we sometimes make exceptions for this. Our
802 decision will be guided by the two goals of preserving the free status
803 of all derivatives of our free software and of promoting the sharing
804 and reuse of software generally.
808 15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
809 WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
810 EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
811 OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY
812 KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
813 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
814 PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
815 LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
816 THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
818 16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
819 WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
820 AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
821 FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
822 CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
823 LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
824 RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
825 FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
826 SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
829 END OF TERMS AND CONDITIONS
831 How to Apply These Terms to Your New Libraries
833 If you develop a new library, and you want it to be of the greatest
834 possible use to the public, we recommend making it free software that
835 everyone can redistribute and change. You can do so by permitting
836 redistribution under these terms (or, alternatively, under the terms of the
837 ordinary General Public License).
839 To apply these terms, attach the following notices to the library. It is
840 safest to attach them to the start of each source file to most effectively
841 convey the exclusion of warranty; and each file should have at least the
842 "copyright" line and a pointer to where the full notice is found.
844 <one line to give the library's name and a brief idea of what it does.>
845 Copyright (C) <year> <name of author>
847 This library is free software; you can redistribute it and/or
848 modify it under the terms of the GNU Lesser General Public
849 License as published by the Free Software Foundation; either
850 version 2.1 of the License, or (at your option) any later version.
852 This library is distributed in the hope that it will be useful,
853 but WITHOUT ANY WARRANTY; without even the implied warranty of
854 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
855 Lesser General Public License for more details.
857 You should have received a copy of the GNU Lesser General Public
858 License along with this library; if not, write to the Free Software
859 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
861 Also add information on how to contact you by electronic and paper mail.
863 You should also get your employer (if you work as a programmer) or your
864 school, if any, to sign a "copyright disclaimer" for the library, if
865 necessary. Here is a sample; alter the names:
867 Yoyodyne, Inc., hereby disclaims all copyright interest in the
868 library `Frob' (a library for tweaking knobs) written by James Random Hacker.
870 <signature of Ty Coon>, 1 April 1990
871 Ty Coon, President of Vice
873 That's all there is to it!