COPYING 26 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515
  1. GNU LESSER GENERAL PUBLIC LICENSE
  2. Version 2.1, February 1999
  3. Copyright (C) 1991, 1999 Free Software Foundation, Inc.
  4. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  5. Everyone is permitted to copy and distribute verbatim copies
  6. of this license document, but changing it is not allowed.
  7. [This is the first released version of the Lesser GPL. It also counts
  8. as the successor of the GNU Library Public License, version 2, hence
  9. the version number 2.1.]
  10. Preamble
  11. The licenses for most software are designed to take away your
  12. freedom to share and change it. By contrast, the GNU General Public
  13. Licenses are intended to guarantee your freedom to share and change
  14. free software--to make sure the software is free for all its users.
  15. This license, the Lesser General Public License, applies to some
  16. specially designated software packages--typically libraries--of the
  17. Free Software Foundation and other authors who decide to use it. You
  18. can use it too, but we suggest you first think carefully about whether
  19. this license or the ordinary General Public License is the better
  20. strategy to use in any particular case, based on the explanations
  21. below.
  22. When we speak of free software, we are referring to freedom of use,
  23. not price. Our General Public Licenses are designed to make sure that
  24. you have the freedom to distribute copies of free software (and charge
  25. for this service if you wish); that you receive source code or can get
  26. it if you want it; that you can change the software and use pieces of
  27. it in new free programs; and that you are informed that you can do
  28. these things.
  29. To protect your rights, we need to make restrictions that forbid
  30. distributors to deny you these rights or to ask you to surrender these
  31. rights. These restrictions translate to certain responsibilities for
  32. you if you distribute copies of the library or if you modify it.
  33. For example, if you distribute copies of the library, whether gratis
  34. or for a fee, you must give the recipients all the rights that we gave
  35. you. You must make sure that they, too, receive or can get the source
  36. code. If you link other code with the library, you must provide
  37. complete object files to the recipients, so that they can relink them
  38. with the library after making changes to the library and recompiling
  39. it. And you must show them these terms so they know their rights.
  40. We protect your rights with a two-step method: (1) we copyright the
  41. library, and (2) we offer you this license, which gives you legal
  42. permission to copy, distribute and/or modify the library.
  43. To protect each distributor, we want to make it very clear that
  44. there is no warranty for the free library. Also, if the library is
  45. modified by someone else and passed on, the recipients should know
  46. that what they have is not the original version, so that the original
  47. author's reputation will not be affected by problems that might be
  48. introduced by others.
  49. ^L
  50. Finally, software patents pose a constant threat to the existence of
  51. any free program. We wish to make sure that a company cannot
  52. effectively restrict the users of a free program by obtaining a
  53. restrictive license from a patent holder. Therefore, we insist that
  54. any patent license obtained for a version of the library must be
  55. consistent with the full freedom of use specified in this license.
  56. Most GNU software, including some libraries, is covered by the
  57. ordinary GNU General Public License. This license, the GNU Lesser
  58. General Public License, applies to certain designated libraries, and
  59. is quite different from the ordinary General Public License. We use
  60. this license for certain libraries in order to permit linking those
  61. libraries into non-free programs.
  62. When a program is linked with a library, whether statically or using
  63. a shared library, the combination of the two is legally speaking a
  64. combined work, a derivative of the original library. The ordinary
  65. General Public License therefore permits such linking only if the
  66. entire combination fits its criteria of freedom. The Lesser General
  67. Public License permits more lax criteria for linking other code with
  68. the library.
  69. We call this license the "Lesser" General Public License because it
  70. does Less to protect the user's freedom than the ordinary General
  71. Public License. It also provides other free software developers Less
  72. of an advantage over competing non-free programs. These disadvantages
  73. are the reason we use the ordinary General Public License for many
  74. libraries. However, the Lesser license provides advantages in certain
  75. special circumstances.
  76. For example, on rare occasions, there may be a special need to
  77. encourage the widest possible use of a certain library, so that it
  78. becomes
  79. a de-facto standard. To achieve this, non-free programs must be
  80. allowed to use the library. A more frequent case is that a free
  81. library does the same job as widely used non-free libraries. In this
  82. case, there is little to gain by limiting the free library to free
  83. software only, so we use the Lesser General Public License.
  84. In other cases, permission to use a particular library in non-free
  85. programs enables a greater number of people to use a large body of
  86. free software. For example, permission to use the GNU C Library in
  87. non-free programs enables many more people to use the whole GNU
  88. operating system, as well as its variant, the GNU/Linux operating
  89. system.
  90. Although the Lesser General Public License is Less protective of the
  91. users' freedom, it does ensure that the user of a program that is
  92. linked with the Library has the freedom and the wherewithal to run
  93. that program using a modified version of the Library.
  94. The precise terms and conditions for copying, distribution and
  95. modification follow. Pay close attention to the difference between a
  96. "work based on the library" and a "work that uses the library". The
  97. former contains code derived from the library, whereas the latter must
  98. be combined with the library in order to run.
  99. ^L
  100. GNU LESSER GENERAL PUBLIC LICENSE
  101. TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
  102. 0. This License Agreement applies to any software library or other
  103. program which contains a notice placed by the copyright holder or
  104. other authorized party saying it may be distributed under the terms of
  105. this Lesser General Public License (also called "this License").
  106. Each licensee is addressed as "you".
  107. A "library" means a collection of software functions and/or data
  108. prepared so as to be conveniently linked with application programs
  109. (which use some of those functions and data) to form executables.
  110. The "Library", below, refers to any such software library or work
  111. which has been distributed under these terms. A "work based on the
  112. Library" means either the Library or any derivative work under
  113. copyright law: that is to say, a work containing the Library or a
  114. portion of it, either verbatim or with modifications and/or translated
  115. straightforwardly into another language. (Hereinafter, translation is
  116. included without limitation in the term "modification".)
  117. "Source code" for a work means the preferred form of the work for
  118. making modifications to it. For a library, complete source code means
  119. all the source code for all modules it contains, plus any associated
  120. interface definition files, plus the scripts used to control
  121. compilation
  122. and installation of the library.
  123. Activities other than copying, distribution and modification are not
  124. covered by this License; they are outside its scope. The act of
  125. running a program using the Library is not restricted, and output from
  126. such a program is covered only if its contents constitute a work based
  127. on the Library (independent of the use of the Library in a tool for
  128. writing it). Whether that is true depends on what the Library does
  129. and what the program that uses the Library does.
  130. 1. You may copy and distribute verbatim copies of the Library's
  131. complete source code as you receive it, in any medium, provided that
  132. you conspicuously and appropriately publish on each copy an
  133. appropriate copyright notice and disclaimer of warranty; keep intact
  134. all the notices that refer to this License and to the absence of any
  135. warranty; and distribute a copy of this License along with the
  136. Library.
  137. You may charge a fee for the physical act of transferring a copy,
  138. and you may at your option offer warranty protection in exchange for a
  139. fee.
  140. 2. You may modify your copy or copies of the Library or any portion
  141. of it, thus forming a work based on the Library, and copy and
  142. distribute such modifications or work under the terms of Section 1
  143. above, provided that you also meet all of these conditions:
  144. a) The modified work must itself be a software library.
  145. b) You must cause the files modified to carry prominent notices
  146. stating that you changed the files and the date of any change.
  147. c) You must cause the whole of the work to be licensed at no
  148. charge to all third parties under the terms of this License.
  149. d) If a facility in the modified Library refers to a function or a
  150. table of data to be supplied by an application program that uses
  151. the facility, other than as an argument passed when the facility
  152. is invoked, then you must make a good faith effort to ensure that,
  153. in the event an application does not supply such function or
  154. table, the facility still operates, and performs whatever part of
  155. its purpose remains meaningful.
  156. (For example, a function in a library to compute square roots has
  157. a purpose that is entirely well-defined independent of the
  158. application. Therefore, Subsection 2d requires that any
  159. application-supplied function or table used by this function must
  160. be optional: if the application does not supply it, the square
  161. root function must still compute square roots.)
  162. These requirements apply to the modified work as a whole. If
  163. identifiable sections of that work are not derived from the Library,
  164. and can be reasonably considered independent and separate works in
  165. themselves, then this License, and its terms, do not apply to those
  166. sections when you distribute them as separate works. But when you
  167. distribute the same sections as part of a whole which is a work based
  168. on the Library, the distribution of the whole must be on the terms of
  169. this License, whose permissions for other licensees extend to the
  170. entire whole, and thus to each and every part regardless of who wrote
  171. it.
  172. Thus, it is not the intent of this section to claim rights or contest
  173. your rights to work written entirely by you; rather, the intent is to
  174. exercise the right to control the distribution of derivative or
  175. collective works based on the Library.
  176. In addition, mere aggregation of another work not based on the Library
  177. with the Library (or with a work based on the Library) on a volume of
  178. a storage or distribution medium does not bring the other work under
  179. the scope of this License.
  180. 3. You may opt to apply the terms of the ordinary GNU General Public
  181. License instead of this License to a given copy of the Library. To do
  182. this, you must alter all the notices that refer to this License, so
  183. that they refer to the ordinary GNU General Public License, version 2,
  184. instead of to this License. (If a newer version than version 2 of the
  185. ordinary GNU General Public License has appeared, then you can specify
  186. that version instead if you wish.) Do not make any other change in
  187. these notices.
  188. ^L
  189. Once this change is made in a given copy, it is irreversible for
  190. that copy, so the ordinary GNU General Public License applies to all
  191. subsequent copies and derivative works made from that copy.
  192. This option is useful when you wish to copy part of the code of
  193. the Library into a program that is not a library.
  194. 4. You may copy and distribute the Library (or a portion or
  195. derivative of it, under Section 2) in object code or executable form
  196. under the terms of Sections 1 and 2 above provided that you accompany
  197. it with the complete corresponding machine-readable source code, which
  198. must be distributed under the terms of Sections 1 and 2 above on a
  199. medium customarily used for software interchange.
  200. If distribution of object code is made by offering access to copy
  201. from a designated place, then offering equivalent access to copy the
  202. source code from the same place satisfies the requirement to
  203. distribute the source code, even though third parties are not
  204. compelled to copy the source along with the object code.
  205. 5. A program that contains no derivative of any portion of the
  206. Library, but is designed to work with the Library by being compiled or
  207. linked with it, is called a "work that uses the Library". Such a
  208. work, in isolation, is not a derivative work of the Library, and
  209. therefore falls outside the scope of this License.
  210. However, linking a "work that uses the Library" with the Library
  211. creates an executable that is a derivative of the Library (because it
  212. contains portions of the Library), rather than a "work that uses the
  213. library". The executable is therefore covered by this License.
  214. Section 6 states terms for distribution of such executables.
  215. When a "work that uses the Library" uses material from a header file
  216. that is part of the Library, the object code for the work may be a
  217. derivative work of the Library even though the source code is not.
  218. Whether this is true is especially significant if the work can be
  219. linked without the Library, or if the work is itself a library. The
  220. threshold for this to be true is not precisely defined by law.
  221. If such an object file uses only numerical parameters, data
  222. structure layouts and accessors, and small macros and small inline
  223. functions (ten lines or less in length), then the use of the object
  224. file is unrestricted, regardless of whether it is legally a derivative
  225. work. (Executables containing this object code plus portions of the
  226. Library will still fall under Section 6.)
  227. Otherwise, if the work is a derivative of the Library, you may
  228. distribute the object code for the work under the terms of Section 6.
  229. Any executables containing that work also fall under Section 6,
  230. whether or not they are linked directly with the Library itself.
  231. ^L
  232. 6. As an exception to the Sections above, you may also combine or
  233. link a "work that uses the Library" with the Library to produce a
  234. work containing portions of the Library, and distribute that work
  235. under terms of your choice, provided that the terms permit
  236. modification of the work for the customer's own use and reverse
  237. engineering for debugging such modifications.
  238. You must give prominent notice with each copy of the work that the
  239. Library is used in it and that the Library and its use are covered by
  240. this License. You must supply a copy of this License. If the work
  241. during execution displays copyright notices, you must include the
  242. copyright notice for the Library among them, as well as a reference
  243. directing the user to the copy of this License. Also, you must do one
  244. of these things:
  245. a) Accompany the work with the complete corresponding
  246. machine-readable source code for the Library including whatever
  247. changes were used in the work (which must be distributed under
  248. Sections 1 and 2 above); and, if the work is an executable linked
  249. with the Library, with the complete machine-readable "work that
  250. uses the Library", as object code and/or source code, so that the
  251. user can modify the Library and then relink to produce a modified
  252. executable containing the modified Library. (It is understood
  253. that the user who changes the contents of definitions files in the
  254. Library will not necessarily be able to recompile the application
  255. to use the modified definitions.)
  256. b) Use a suitable shared library mechanism for linking with the
  257. Library. A suitable mechanism is one that (1) uses at run time a
  258. copy of the library already present on the user's computer system,
  259. rather than copying library functions into the executable, and (2)
  260. will operate properly with a modified version of the library, if
  261. the user installs one, as long as the modified version is
  262. interface-compatible with the version that the work was made with.
  263. c) Accompany the work with a written offer, valid for at
  264. least three years, to give the same user the materials
  265. specified in Subsection 6a, above, for a charge no more
  266. than the cost of performing this distribution.
  267. d) If distribution of the work is made by offering access to copy
  268. from a designated place, offer equivalent access to copy the above
  269. specified materials from the same place.
  270. e) Verify that the user has already received a copy of these
  271. materials or that you have already sent this user a copy.
  272. For an executable, the required form of the "work that uses the
  273. Library" must include any data and utility programs needed for
  274. reproducing the executable from it. However, as a special exception,
  275. the materials to be distributed need not include anything that is
  276. normally distributed (in either source or binary form) with the major
  277. components (compiler, kernel, and so on) of the operating system on
  278. which the executable runs, unless that component itself accompanies
  279. the executable.
  280. It may happen that this requirement contradicts the license
  281. restrictions of other proprietary libraries that do not normally
  282. accompany the operating system. Such a contradiction means you cannot
  283. use both them and the Library together in an executable that you
  284. distribute.
  285. ^L
  286. 7. You may place library facilities that are a work based on the
  287. Library side-by-side in a single library together with other library
  288. facilities not covered by this License, and distribute such a combined
  289. library, provided that the separate distribution of the work based on
  290. the Library and of the other library facilities is otherwise
  291. permitted, and provided that you do these two things:
  292. a) Accompany the combined library with a copy of the same work
  293. based on the Library, uncombined with any other library
  294. facilities. This must be distributed under the terms of the
  295. Sections above.
  296. b) Give prominent notice with the combined library of the fact
  297. that part of it is a work based on the Library, and explaining
  298. where to find the accompanying uncombined form of the same work.
  299. 8. You may not copy, modify, sublicense, link with, or distribute
  300. the Library except as expressly provided under this License. Any
  301. attempt otherwise to copy, modify, sublicense, link with, or
  302. distribute the Library is void, and will automatically terminate your
  303. rights under this License. However, parties who have received copies,
  304. or rights, from you under this License will not have their licenses
  305. terminated so long as such parties remain in full compliance.
  306. 9. You are not required to accept this License, since you have not
  307. signed it. However, nothing else grants you permission to modify or
  308. distribute the Library or its derivative works. These actions are
  309. prohibited by law if you do not accept this License. Therefore, by
  310. modifying or distributing the Library (or any work based on the
  311. Library), you indicate your acceptance of this License to do so, and
  312. all its terms and conditions for copying, distributing or modifying
  313. the Library or works based on it.
  314. 10. Each time you redistribute the Library (or any work based on the
  315. Library), the recipient automatically receives a license from the
  316. original licensor to copy, distribute, link with or modify the Library
  317. subject to these terms and conditions. You may not impose any further
  318. restrictions on the recipients' exercise of the rights granted herein.
  319. You are not responsible for enforcing compliance by third parties with
  320. this License.
  321. ^L
  322. 11. If, as a consequence of a court judgment or allegation of patent
  323. infringement or for any other reason (not limited to patent issues),
  324. conditions are imposed on you (whether by court order, agreement or
  325. otherwise) that contradict the conditions of this License, they do not
  326. excuse you from the conditions of this License. If you cannot
  327. distribute so as to satisfy simultaneously your obligations under this
  328. License and any other pertinent obligations, then as a consequence you
  329. may not distribute the Library at all. For example, if a patent
  330. license would not permit royalty-free redistribution of the Library by
  331. all those who receive copies directly or indirectly through you, then
  332. the only way you could satisfy both it and this License would be to
  333. refrain entirely from distribution of the Library.
  334. If any portion of this section is held invalid or unenforceable under
  335. any particular circumstance, the balance of the section is intended to
  336. apply, and the section as a whole is intended to apply in other
  337. circumstances.
  338. It is not the purpose of this section to induce you to infringe any
  339. patents or other property right claims or to contest validity of any
  340. such claims; this section has the sole purpose of protecting the
  341. integrity of the free software distribution system which is
  342. implemented by public license practices. Many people have made
  343. generous contributions to the wide range of software distributed
  344. through that system in reliance on consistent application of that
  345. system; it is up to the author/donor to decide if he or she is willing
  346. to distribute software through any other system and a licensee cannot
  347. impose that choice.
  348. This section is intended to make thoroughly clear what is believed to
  349. be a consequence of the rest of this License.
  350. 12. If the distribution and/or use of the Library is restricted in
  351. certain countries either by patents or by copyrighted interfaces, the
  352. original copyright holder who places the Library under this License
  353. may add an explicit geographical distribution limitation excluding those
  354. countries, so that distribution is permitted only in or among
  355. countries not thus excluded. In such case, this License incorporates
  356. the limitation as if written in the body of this License.
  357. 13. The Free Software Foundation may publish revised and/or new
  358. versions of the Lesser General Public License from time to time.
  359. Such new versions will be similar in spirit to the present version,
  360. but may differ in detail to address new problems or concerns.
  361. Each version is given a distinguishing version number. If the Library
  362. specifies a version number of this License which applies to it and
  363. "any later version", you have the option of following the terms and
  364. conditions either of that version or of any later version published by
  365. the Free Software Foundation. If the Library does not specify a
  366. license version number, you may choose any version ever published by
  367. the Free Software Foundation.
  368. ^L
  369. 14. If you wish to incorporate parts of the Library into other free
  370. programs whose distribution conditions are incompatible with these,
  371. write to the author to ask for permission. For software which is
  372. copyrighted by the Free Software Foundation, write to the Free
  373. Software Foundation; we sometimes make exceptions for this. Our
  374. decision will be guided by the two goals of preserving the free status
  375. of all derivatives of our free software and of promoting the sharing
  376. and reuse of software generally.
  377. NO WARRANTY
  378. 15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
  379. WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
  380. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
  381. OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY
  382. KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
  383. IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  384. PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
  385. LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
  386. THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
  387. 16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
  388. WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
  389. AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
  390. FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
  391. CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
  392. LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
  393. RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
  394. FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
  395. SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
  396. DAMAGES.
  397. END OF TERMS AND CONDITIONS
  398. ^L
  399. How to Apply These Terms to Your New Libraries
  400. If you develop a new library, and you want it to be of the greatest
  401. possible use to the public, we recommend making it free software that
  402. everyone can redistribute and change. You can do so by permitting
  403. redistribution under these terms (or, alternatively, under the terms
  404. of the ordinary General Public License).
  405. To apply these terms, attach the following notices to the library.
  406. It is safest to attach them to the start of each source file to most
  407. effectively convey the exclusion of warranty; and each file should
  408. have at least the "copyright" line and a pointer to where the full
  409. notice is found.
  410. <one line to give the library's name and a brief idea of what it
  411. does.>
  412. Copyright (C) <year> <name of author>
  413. This library is free software; you can redistribute it and/or
  414. modify it under the terms of the GNU Lesser General Public
  415. License as published by the Free Software Foundation; either
  416. version 2 of the License, or (at your option) any later version.
  417. This library is distributed in the hope that it will be useful,
  418. but WITHOUT ANY WARRANTY; without even the implied warranty of
  419. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  420. Lesser General Public License for more details.
  421. You should have received a copy of the GNU Lesser General Public
  422. License along with this library; if not, write to the Free Software
  423. Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  424. Also add information on how to contact you by electronic and paper
  425. mail.
  426. You should also get your employer (if you work as a programmer) or
  427. your
  428. school, if any, to sign a "copyright disclaimer" for the library, if
  429. necessary. Here is a sample; alter the names:
  430. Yoyodyne, Inc., hereby disclaims all copyright interest in the
  431. library `Frob' (a library for tweaking knobs) written by James
  432. Random Hacker.
  433. <signature of Ty Coon>, 1 April 1990
  434. Ty Coon, President of Vice
  435. That's all there is to it!