|
1 ---------------------------------------------------------------------- |
|
2 The aeslua (all versions) is provided under the terms and |
|
3 conditions of the GNU Lesser General Public Library, which is stated |
|
4 below. It can also be found at: |
|
5 |
|
6 http://www.gnu.org/copyleft/lesser.html |
|
7 |
|
8 ---------------------------------------------------------------------- |
|
9 |
|
10 GNU LESSER GENERAL PUBLIC LICENSE |
|
11 |
|
12 Version 2.1, February 1999 |
|
13 |
|
14 Copyright (C) 1991, 1999 Free Software Foundation, Inc. |
|
15 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
|
16 Everyone is permitted to copy and distribute verbatim copies |
|
17 of this license document, but changing it is not allowed. |
|
18 |
|
19 [This is the first released version of the Lesser GPL. It also counts |
|
20 as the successor of the GNU Library Public License, version 2, hence the |
|
21 version number 2.1.] |
|
22 |
|
23 Preamble |
|
24 |
|
25 The licenses for most software are designed to take away your freedom to |
|
26 share and change it. By contrast, the GNU General Public Licenses are |
|
27 intended to guarantee your freedom to share and change free software--to |
|
28 make sure the software is free for all its users. |
|
29 |
|
30 This license, the Lesser General Public License, applies to some |
|
31 specially designated software packages--typically libraries--of the Free |
|
32 Software Foundation and other authors who decide to use it. You can use |
|
33 it too, but we suggest you first think carefully about whether this |
|
34 license or the ordinary General Public License is the better strategy to |
|
35 use in any particular case, based on the explanations below. |
|
36 |
|
37 When we speak of free software, we are referring to freedom of use, not |
|
38 price. Our General Public Licenses are designed to make sure that you |
|
39 have the freedom to distribute copies of free software (and charge for |
|
40 this service if you wish); that you receive source code or can get it if |
|
41 you want it; that you can change the software and use pieces of it in |
|
42 new free programs; and that you are informed that you can do these |
|
43 things. |
|
44 |
|
45 To protect your rights, we need to make restrictions that forbid |
|
46 distributors to deny you these rights or to ask you to surrender these |
|
47 rights. These restrictions translate to certain responsibilities for you |
|
48 if you distribute copies of the library or if you modify it. |
|
49 |
|
50 For example, if you distribute copies of the library, whether gratis or |
|
51 for a fee, you must give the recipients all the rights that we gave you. |
|
52 You must make sure that they, too, receive or can get the source code. |
|
53 If you link other code with the library, you must provide complete |
|
54 object files to the recipients, so that they can relink them with the |
|
55 library after making changes to the library and recompiling it. And you |
|
56 must show them these terms so they know their rights. |
|
57 |
|
58 We protect your rights with a two-step method: (1) we copyright the |
|
59 library, and (2) we offer you this license, which gives you legal |
|
60 permission to copy, distribute and/or modify the library. |
|
61 |
|
62 To protect each distributor, we want to make it very clear that there is |
|
63 no warranty for the free library. Also, if the library is modified by |
|
64 someone else and passed on, the recipients should know that what they |
|
65 have is not the original version, so that the original author's |
|
66 reputation will not be affected by problems that might be introduced by |
|
67 others. |
|
68 |
|
69 Finally, software patents pose a constant threat to the existence of any |
|
70 free program. We wish to make sure that a company cannot effectively |
|
71 restrict the users of a free program by obtaining a restrictive license |
|
72 from a patent holder. Therefore, we insist that any patent license |
|
73 obtained for a version of the library must be consistent with the full |
|
74 freedom of use specified in this license. |
|
75 |
|
76 Most GNU software, including some libraries, is covered by the ordinary |
|
77 GNU General Public License. This license, the GNU Lesser General Public |
|
78 License, applies to certain designated libraries, and is quite different |
|
79 from the ordinary General Public License. We use this license for |
|
80 certain libraries in order to permit linking those libraries into |
|
81 non-free programs. |
|
82 |
|
83 When a program is linked with a library, whether statically or using a |
|
84 shared library, the combination of the two is legally speaking a |
|
85 combined work, a derivative of the original library. The ordinary |
|
86 General Public License therefore permits such linking only if the entire |
|
87 combination fits its criteria of freedom. The Lesser General Public |
|
88 License permits more lax criteria for linking other code with the |
|
89 library. |
|
90 |
|
91 We call this license the "Lesser" General Public License because it does |
|
92 Less to protect the user's freedom than the ordinary General Public |
|
93 License. It also provides other free software developers Less of an |
|
94 advantage over competing non-free programs. These disadvantages are the |
|
95 reason we use the ordinary General Public License for many libraries. |
|
96 However, the Lesser license provides advantages in certain special |
|
97 circumstances. |
|
98 |
|
99 For example, on rare occasions, there may be a special need to encourage |
|
100 the widest possible use of a certain library, so that it becomes a |
|
101 de-facto standard. To achieve this, non-free programs must be allowed to |
|
102 use the library. A more frequent case is that a free library does the |
|
103 same job as widely used non-free libraries. In this case, there is |
|
104 little to gain by limiting the free library to free software only, so we |
|
105 use the Lesser General Public License. |
|
106 |
|
107 In other cases, permission to use a particular library in non-free |
|
108 programs enables a greater number of people to use a large body of free |
|
109 software. For example, permission to use the GNU C Library in non-free |
|
110 programs enables many more people to use the whole GNU operating system, |
|
111 as well as its variant, the GNU/Linux operating system. |
|
112 |
|
113 Although the Lesser General Public License is Less protective of the |
|
114 users' freedom, it does ensure that the user of a program that is linked |
|
115 with the Library has the freedom and the wherewithal to run that program |
|
116 using a modified version of the Library. |
|
117 |
|
118 The precise terms and conditions for copying, distribution and |
|
119 modification follow. Pay close attention to the difference between a |
|
120 "work based on the library" and a "work that uses the library". The |
|
121 former contains code derived from the library, whereas the latter must |
|
122 be combined with the library in order to run. |
|
123 |
|
124 TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION |
|
125 |
|
126 0. This License Agreement applies to any software library or other |
|
127 program which contains a notice placed by the copyright holder or other |
|
128 authorized party saying it may be distributed under the terms of this |
|
129 Lesser General Public License (also called "this License"). Each |
|
130 licensee is addressed as "you". |
|
131 |
|
132 A "library" means a collection of software functions and/or data |
|
133 prepared so as to be conveniently linked with application programs |
|
134 (which use some of those functions and data) to form executables. |
|
135 |
|
136 The "Library", below, refers to any such software library or work which |
|
137 has been distributed under these terms. A "work based on the Library" |
|
138 means either the Library or any derivative work under copyright law: |
|
139 that is to say, a work containing the Library or a portion of it, either |
|
140 verbatim or with modifications and/or translated straightforwardly into |
|
141 another language. (Hereinafter, translation is included without |
|
142 limitation in the term "modification".) |
|
143 |
|
144 "Source code" for a work means the preferred form of the work for making |
|
145 modifications to it. For a library, complete source code means all the |
|
146 source code for all modules it contains, plus any associated interface |
|
147 definition files, plus the scripts used to control compilation and |
|
148 installation of the library. |
|
149 |
|
150 Activities other than copying, distribution and modification are not |
|
151 covered by this License; they are outside its scope. The act of running |
|
152 a program using the Library is not restricted, and output from such a |
|
153 program is covered only if its contents constitute a work based on the |
|
154 Library (independent of the use of the Library in a tool for writing |
|
155 it). Whether that is true depends on what the Library does and what the |
|
156 program that uses the Library does. |
|
157 |
|
158 1. You may copy and distribute verbatim copies of the Library's complete |
|
159 source code as you receive it, in any medium, provided that you |
|
160 conspicuously and appropriately publish on each copy an appropriate |
|
161 copyright notice and disclaimer of warranty; keep intact all the notices |
|
162 that refer to this License and to the absence of any warranty; and |
|
163 distribute a copy of this License along with the Library. |
|
164 |
|
165 You may charge a fee for the physical act of transferring a copy, and |
|
166 you may at your option offer warranty protection in exchange for a fee. |
|
167 |
|
168 2. You may modify your copy or copies of the Library or any portion of |
|
169 it, thus forming a work based on the Library, and copy and distribute |
|
170 such modifications or work under the terms of Section 1 above, provided |
|
171 that you also meet all of these conditions: |
|
172 |
|
173 a) The modified work must itself be a software library. |
|
174 b) You must cause the files modified to carry prominent notices |
|
175 stating that you changed the files and the date of any change. |
|
176 c) You must cause the whole of the work to be licensed at no |
|
177 charge to all third parties under the terms of this License. |
|
178 d) If a facility in the modified Library refers to a function or a |
|
179 table of data to be supplied by an application program that uses |
|
180 the facility, other than as an argument passed when the facility |
|
181 is invoked, then you must make a good faith effort to ensure that, |
|
182 in the event an application does not supply such function or |
|
183 table, the facility still operates, and performs whatever part of |
|
184 its purpose remains meaningful. |
|
185 |
|
186 (For example, a function in a library to compute square roots has |
|
187 a purpose that is entirely well-defined independent of the application. |
|
188 Therefore, Subsection 2d requires that any application-supplied function |
|
189 or table used by this function must be optional: if the application does |
|
190 not supply it, the square root function must still compute square |
|
191 roots.) |
|
192 |
|
193 These requirements apply to the modified work as a whole. If |
|
194 identifiable sections of that work are not derived from the Library, and |
|
195 can be reasonably considered independent and separate works in |
|
196 themselves, then this License, and its terms, do not apply to those |
|
197 sections when you distribute them as separate works. But when you |
|
198 distribute the same sections as part of a whole which is a work based on |
|
199 the Library, the distribution of the whole must be on the terms of this |
|
200 License, whose permissions for other licensees extend to the entire |
|
201 whole, and thus to each and every part regardless of who wrote it. |
|
202 |
|
203 Thus, it is not the intent of this section to claim rights or |
|
204 contest your rights to work written entirely by you; rather, the intent |
|
205 is to 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 |
|
209 Library with the Library (or with a work based on the Library) on a |
|
210 volume of a storage or distribution medium does not bring the other work |
|
211 under 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 that |
|
216 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 these |
|
220 notices. |
|
221 |
|
222 Once this change is made in a given copy, it is irreversible for that |
|
223 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 the |
|
227 Library into a program that is not a library. |
|
228 |
|
229 4. You may copy and distribute the Library (or a portion or derivative |
|
230 of it, under Section 2) in object code or executable form under the |
|
231 terms of Sections 1 and 2 above provided that you accompany it with the |
|
232 complete corresponding machine-readable source code, which must be |
|
233 distributed under the terms of Sections 1 and 2 above on a medium |
|
234 customarily used for software interchange. |
|
235 |
|
236 If distribution of object code is made by offering access to copy from a |
|
237 designated place, then offering equivalent access to copy the source |
|
238 code from the same place satisfies the requirement to distribute the |
|
239 source code, even though third parties are not compelled to copy the |
|
240 source along with the object code. |
|
241 |
|
242 5. A program that contains no derivative of any portion of the Library, |
|
243 but is designed to work with the Library by being compiled or linked |
|
244 with it, is called a "work that uses the Library". Such a work, in |
|
245 isolation, is not a derivative work of the Library, and therefore falls |
|
246 outside the scope of this License. |
|
247 |
|
248 However, linking a "work that uses the Library" with the Library creates |
|
249 an executable that is a derivative of the Library (because it contains |
|
250 portions of the Library), rather than a "work that uses the library". |
|
251 The executable is therefore covered by this License. Section 6 states |
|
252 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 linked |
|
258 without the Library, or if the work is itself a library. The threshold |
|
259 for this to be true is not precisely defined by law. |
|
260 |
|
261 If such an object file uses only numerical parameters, data structure |
|
262 layouts and accessors, and small macros and small inline functions (ten |
|
263 lines or less in length), then the use of the object file is |
|
264 unrestricted, regardless of whether it is legally a derivative work. |
|
265 (Executables containing this object code plus portions of the Library |
|
266 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, whether |
|
271 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 link a |
|
274 "work that uses the Library" with the Library to produce a work |
|
275 containing portions of the Library, and distribute that work under terms |
|
276 of your choice, provided that the terms permit modification of the work |
|
277 for the customer's own use and reverse engineering for debugging such |
|
278 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 during |
|
283 execution displays copyright notices, you must include the copyright |
|
284 notice for the Library among them, as well as a reference directing the |
|
285 user to the copy of this License. Also, you must do one of these things: |
|
286 |
|
287 a) Accompany the work with the complete corresponding |
|
288 machine-readable source code for the Library including whatever |
|
289 changes were used in the work (which must be distributed under |
|
290 Sections 1 and 2 above); and, if the work is an executable linked |
|
291 with the Library, with the complete machine-readable "work that |
|
292 uses the Library", as object code and/or source code, so that the |
|
293 user can modify the Library and then relink to produce a modified |
|
294 executable containing the modified Library. (It is understood that |
|
295 the user who changes the contents of definitions files in the |
|
296 Library will not necessarily be able to recompile the application |
|
297 to use the modified definitions.) |
|
298 b) Use a suitable shared library mechanism for linking with the |
|
299 Library. A suitable mechanism is one that (1) uses at run time a |
|
300 copy of the library already present on the user's computer system, |
|
301 rather than copying library functions into the executable, and (2) |
|
302 will operate properly with a modified version of the library, if |
|
303 the user installs one, as long as the modified version is |
|
304 interface-compatible with the version that the work was made with. |
|
305 c) Accompany the work with a written offer, valid for at least |
|
306 three years, to give the same user the materials specified in |
|
307 Subsection 6a, above, for a charge no more than the cost of |
|
308 performing this distribution. |
|
309 d) If distribution of the work is made by offering access to copy |
|
310 from a designated place, offer equivalent access to copy the above |
|
311 specified materials from the same place. |
|
312 e) Verify that the user has already received a copy of these |
|
313 materials or that you have already sent this user a copy. |
|
314 |
|
315 For an executable, the required form of the "work that uses the Library" |
|
316 must include any data and utility programs needed for reproducing the |
|
317 executable from it. However, as a special exception, the materials to be |
|
318 distributed need not include anything that is normally distributed (in |
|
319 either source or binary form) with the major components (compiler, |
|
320 kernel, and so on) of the operating system on which the executable runs, |
|
321 unless that component itself accompanies the executable. |
|
322 |
|
323 It may happen that this requirement contradicts the license restrictions |
|
324 of other proprietary libraries that do not normally accompany the |
|
325 operating system. Such a contradiction means you cannot use both them |
|
326 and the Library together in an executable that you distribute. |
|
327 |
|
328 7. You may place library facilities that are a work based on the Library |
|
329 side-by-side in a single library together with other library facilities |
|
330 not covered by this License, and distribute such a combined library, |
|
331 provided that the separate distribution of the work based on the Library |
|
332 and of the other library facilities is otherwise permitted, and provided |
|
333 that you do these two things: |
|
334 |
|
335 a) Accompany the combined library with a copy of the same work |
|
336 based on the Library, uncombined with any other library |
|
337 facilities. This must be distributed under the terms of the |
|
338 Sections above. |
|
339 b) Give prominent notice with the combined library of the fact |
|
340 that part of it is a work based on the Library, and explaining |
|
341 where to find the accompanying uncombined form of the same work. |
|
342 |
|
343 8. You may not copy, modify, sublicense, link with, or distribute the |
|
344 Library except as expressly provided under this License. Any attempt |
|
345 otherwise to copy, modify, sublicense, link with, or distribute the |
|
346 Library is void, and will automatically terminate your rights under this |
|
347 License. However, parties who have received copies, or rights, from you |
|
348 under this License will not have their licenses terminated so long as |
|
349 such parties remain in full compliance. |
|
350 |
|
351 9. You are not required to accept this License, since you have not |
|
352 signed it. However, nothing else grants you permission to modify or |
|
353 distribute the Library or its derivative works. These actions are |
|
354 prohibited by law if you do not accept this License. Therefore, by |
|
355 modifying or distributing the Library (or any work based on the |
|
356 Library), you indicate your acceptance of this License to do so, and all |
|
357 its terms and conditions for copying, distributing or modifying the |
|
358 Library or works based on it. |
|
359 |
|
360 10. Each time you redistribute the Library (or any work based on the |
|
361 Library), the recipient automatically receives a license from the |
|
362 original licensor to copy, distribute, link with or modify the Library |
|
363 subject to these terms and conditions. You may not impose any further |
|
364 restrictions on the recipients' exercise of the rights granted herein. |
|
365 You are not responsible for enforcing compliance by third parties with |
|
366 this License. |
|
367 |
|
368 11. If, as a consequence of a court judgment or allegation of patent |
|
369 infringement or for any other reason (not limited to patent issues), |
|
370 conditions are imposed on you (whether by court order, agreement or |
|
371 otherwise) that contradict the conditions of this License, they do not |
|
372 excuse you from the conditions of this License. If you cannot distribute |
|
373 so as to satisfy simultaneously your obligations under this License and |
|
374 any other pertinent obligations, then as a consequence you may not |
|
375 distribute the Library at all. For example, if a patent license would |
|
376 not permit royalty-free redistribution of the Library by all those who |
|
377 receive copies directly or indirectly through you, then the only way you |
|
378 could satisfy both it and this License would be to refrain entirely from |
|
379 distribution of the Library. |
|
380 |
|
381 If any portion of this section is held invalid or unenforceable under |
|
382 any particular circumstance, the balance of the section is intended to |
|
383 apply, and the section as a whole is intended to apply in other |
|
384 circumstances. |
|
385 |
|
386 It is not the purpose of this section to induce you to infringe any |
|
387 patents or other property right claims or to contest validity of any |
|
388 such claims; this section has the sole purpose of protecting the |
|
389 integrity of the free software distribution system which is implemented |
|
390 by public license practices. Many people have made generous |
|
391 contributions to the wide range of software distributed through that |
|
392 system in reliance on consistent application of that system; it is up to |
|
393 the author/donor to decide if he or she is willing to distribute |
|
394 software through any other system and a licensee cannot impose that |
|
395 choice. |
|
396 |
|
397 This section is intended to make thoroughly clear what is believed to be |
|
398 a consequence of the rest of this License. |
|
399 |
|
400 12. If the distribution and/or use of the Library is restricted in |
|
401 certain countries either by patents or by copyrighted interfaces, the |
|
402 original copyright holder who places the Library under this License may |
|
403 add an explicit geographical distribution limitation excluding those |
|
404 countries, so that distribution is permitted only in or among countries |
|
405 not thus excluded. In such case, this License incorporates the |
|
406 limitation as if written in the body of this License. |
|
407 |
|
408 13. The Free Software Foundation may publish revised and/or new versions |
|
409 of the Lesser General Public License from time to time. Such new |
|
410 versions will be similar in spirit to the present version, but may |
|
411 differ in detail to address new problems or concerns. |
|
412 |
|
413 Each version is given a distinguishing version number. If the Library |
|
414 specifies a version number of this License which applies to it and "any |
|
415 later version", you have the option of following the terms and |
|
416 conditions either of that version or of any later version published by |
|
417 the Free Software Foundation. If the Library does not specify a license |
|
418 version number, you may choose any version ever published by the Free |
|
419 Software Foundation. |
|
420 |
|
421 14. If you wish to incorporate parts of the Library into other free |
|
422 programs whose distribution conditions are incompatible with these, |
|
423 write to the author to ask for permission. For software which is |
|
424 copyrighted by the Free Software Foundation, write to the Free Software |
|
425 Foundation; we sometimes make exceptions for this. Our decision will be |
|
426 guided by the two goals of preserving the free status of all derivatives |
|
427 of our free software and of promoting the sharing and reuse of software |
|
428 generally. |
|
429 |
|
430 NO WARRANTY |
|
431 |
|
432 15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY |
|
433 FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN |
|
434 OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES |
|
435 PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER |
|
436 EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
|
437 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE |
|
438 ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE LIBRARY IS WITH |
|
439 YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL |
|
440 NECESSARY SERVICING, REPAIR OR CORRECTION. |
|
441 |
|
442 16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN |
|
443 WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY |
|
444 AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU FOR |
|
445 DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL |
|
446 DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE LIBRARY |
|
447 (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED |
|
448 INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF |
|
449 THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF SUCH HOLDER OR |
|
450 OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. |