1 | GNU LIBRARY GENERAL PUBLIC LICENSE
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2 | **********************************
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3 |
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4 | Version 2, June 1991
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5 |
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6 | Copyright (C) 1991 Free Software Foundation, Inc.
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7 | 59 Temple Place -- Suite 330, Boston, MA 02111-1307, USA
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8 |
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9 | Everyone is permitted to copy and distribute verbatim copies
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10 | of this license document, but changing it is not allowed.
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11 |
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12 | [This is the first released version of the library GPL. It is
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13 | numbered 2 because it goes with version 2 of the ordinary GPL.]
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14 |
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15 | Preamble
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16 | ========
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17 |
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18 | The licenses for most software are designed to take away your
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19 | freedom to share and change it. By contrast, the GNU General Public
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20 | Licenses are intended to guarantee your freedom to share and change
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21 | free software--to make sure the software is free for all its users.
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22 |
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23 | This license, the Library General Public License, applies to some
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24 | specially designated Free Software Foundation software, and to any
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25 | other libraries whose authors decide to use it. You can use it for
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26 | your libraries, too.
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27 |
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28 | When we speak of free software, we are referring to freedom, not
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29 | price. Our General Public Licenses are designed to make sure that you
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30 | have the freedom to distribute copies of free software (and charge for
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31 | this service if you wish), that you receive source code or can get it
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32 | if you want it, that you can change the software or use pieces of it in
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33 | new free programs; and that you know you can do these things.
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34 |
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35 | To protect your rights, we need to make restrictions that forbid
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36 | anyone to deny you these rights or to ask you to surrender the rights.
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37 | These restrictions translate to certain responsibilities for you if you
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38 | distribute copies of the library, or if you modify it.
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39 |
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40 | For example, if you distribute copies of the library, whether gratis
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41 | or for a fee, you must give the recipients all the rights that we gave
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42 | you. You must make sure that they, too, receive or can get the source
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43 | code. If you link a program with the library, you must provide
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44 | complete object files to the recipients so that they can relink them
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45 | with the library, after making changes to the library and recompiling
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46 | it. And you must show them these terms so they know their rights.
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47 |
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48 | Our method of protecting your rights has two steps: (1) copyright
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49 | the library, and (2) offer you this license which gives you legal
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50 | permission to copy, distribute and/or modify the library.
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51 |
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52 | Also, for each distributor's protection, we want to make certain
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53 | that everyone understands that there is no warranty for this free
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54 | library. If the library is modified by someone else and passed on, we
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55 | want its recipients to know that what they have is not the original
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56 | version, so that any problems introduced by others will not reflect on
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57 | the original authors' reputations.
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58 |
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59 | Finally, any free program is threatened constantly by software
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60 | patents. We wish to avoid the danger that companies distributing free
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61 | software will individually obtain patent licenses, thus in effect
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62 | transforming the program into proprietary software. To prevent this,
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63 | we have made it clear that any patent must be licensed for everyone's
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64 | free use or not licensed at all.
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65 |
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66 | Most GNU software, including some libraries, is covered by the
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67 | ordinary GNU General Public License, which was designed for utility
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68 | programs. This license, the GNU Library General Public License,
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69 | applies to certain designated libraries. This license is quite
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70 | different from the ordinary one; be sure to read it in full, and don't
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71 | assume that anything in it is the same as in the ordinary license.
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72 |
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73 | The reason we have a separate public license for some libraries is
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74 | that they blur the distinction we usually make between modifying or
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75 | adding to a program and simply using it. Linking a program with a
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76 | library, without changing the library, is in some sense simply using
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77 | the library, and is analogous to running a utility program or
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78 | application program. However, in a textual and legal sense, the linked
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79 | executable is a combined work, a derivative of the original library,
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80 | and the ordinary General Public License treats it as such.
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81 |
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82 | Because of this blurred distinction, using the ordinary General
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83 | Public License for libraries did not effectively promote software
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84 | sharing, because most developers did not use the libraries. We
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85 | concluded that weaker conditions might promote sharing better.
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86 |
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87 | However, unrestricted linking of non-free programs would deprive the
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88 | users of those programs of all benefit from the free status of the
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89 | libraries themselves. This Library General Public License is intended
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90 | to permit developers of non-free programs to use free libraries, while
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91 | preserving your freedom as a user of such programs to change the free
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94 | it as regards changes in the actual functions of the Library.) The
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95 | hope is that this will lead to faster development of free libraries.
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96 |
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97 | The precise terms and conditions for copying, distribution and
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99 | "work based on the library" and a "work that uses the library". The
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100 | former contains code derived from the library, while the latter only
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101 | works together with the library.
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102 |
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103 | Note that it is possible for a library to be covered by the ordinary
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104 | General Public License rather than by this special one.
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105 |
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106 | TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
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108 | 0. This License Agreement applies to any software library which
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109 | contains a notice placed by the copyright holder or other
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110 | authorized party saying it may be distributed under the terms of
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113 |
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160 |
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161 | b. You must cause the files modified to carry prominent notices
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162 | stating that you changed the files and the date of any change.
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163 |
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164 | c. You must cause the whole of the work to be licensed at no
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166 |
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174 |
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175 | (For example, a function in a library to compute square roots
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176 | has a purpose that is entirely well-defined independent of the
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179 | must be optional: if the application does not supply it, the
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180 | square root function must still compute square roots.)
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181 |
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191 | and every part regardless of who wrote it.
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192 |
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201 | other work under the scope of this License.
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202 |
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203 | 3. You may opt to apply the terms of the ordinary GNU General Public
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205 | To do this, you must alter all the notices that refer to this
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216 | This option is useful when you wish to copy part of the code of
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218 |
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219 | 4. You may copy and distribute the Library (or a portion or
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226 |
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260 |
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263 | 6. Any executables containing that work also fall under Section 6,
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264 | whether or not they are linked directly with the Library itself.
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265 |
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266 | 6. As an exception to the Sections above, you may also compile or
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271 | engineering for debugging such modifications.
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272 |
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273 | You must give prominent notice with each copy of the work that the
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274 | Library is used in it and that the Library and its use are covered
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277 | the copyright notice for the Library among them, as well as a
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279 | you must do one of these things:
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280 |
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281 | a. Accompany the work with the complete corresponding
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285 | is an executable linked with the Library, with the complete
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293 |
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294 | b. Accompany the work with a written offer, valid for at least
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295 | three years, to give the same user the materials specified in
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296 | Subsection 6a, above, for a charge no more than the cost of
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297 | performing this distribution.
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298 |
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299 | c. If distribution of the work is made by offering access to copy
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300 | from a designated place, offer equivalent access to copy the
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301 | above specified materials from the same place.
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302 |
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303 | d. Verify that the user has already received a copy of these
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304 | materials or that you have already sent this user a copy.
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305 |
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307 | Library" must include any data and utility programs needed for
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309 | exception, the source code distributed need not include anything
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310 | that is normally distributed (in either source or binary form)
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313 | component itself accompanies the executable.
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314 |
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315 | It may happen that this requirement contradicts the license
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316 | restrictions of other proprietary libraries that do not normally
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318 | cannot use both them and the Library together in an executable
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319 | that you distribute.
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320 |
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321 | 7. You may place library facilities that are a work based on the
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322 | Library side-by-side in a single library together with other
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323 | library facilities not covered by this License, and distribute
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327 | two things:
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328 |
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329 | a. Accompany the combined library with a copy of the same work
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333 |
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334 | b. Give prominent notice with the combined library of the fact
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335 | that part of it is a work based on the Library, and explaining
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338 |
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339 | 8. You may not copy, modify, sublicense, link with, or distribute the
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347 |
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348 | 9. You are not required to accept this License, since you have not
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349 | signed it. However, nothing else grants you permission to modify
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350 | or distribute the Library or its derivative works. These actions
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356 |
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357 | 10. Each time you redistribute the Library (or any work based on the
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362 | granted herein. You are not responsible for enforcing compliance
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364 |
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365 | 11. If, as a consequence of a court judgment or allegation of patent
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366 | infringement or for any other reason (not limited to patent
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367 | issues), conditions are imposed on you (whether by court order,
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371 | your obligations under this License and any other pertinent
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378 |
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379 | If any portion of this section is held invalid or unenforceable
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381 | intended to apply, and the section as a whole is intended to apply
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382 | in other circumstances.
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383 |
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384 | It is not the purpose of this section to induce you to infringe any
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386 | any such claims; this section has the sole purpose of protecting
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387 | the integrity of the free software distribution system which is
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388 | implemented by public license practices. Many people have made
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392 | willing to distribute software through any other system and a
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394 |
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395 | This section is intended to make thoroughly clear what is believed
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396 | to be a consequence of the rest of this License.
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397 |
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398 | 12. If the distribution and/or use of the Library is restricted in
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399 | certain countries either by patents or by copyrighted interfaces,
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400 | the original copyright holder who places the Library under this
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403 | in or among countries not thus excluded. In such case, this
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405 | this License.
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406 |
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407 | 13. The Free Software Foundation may publish revised and/or new
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408 | versions of the Library General Public License from time to time.
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409 | Such new versions will be similar in spirit to the present version,
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410 | but may differ in detail to address new problems or concerns.
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411 |
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416 | version published by the Free Software Foundation. If the Library
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417 | does not specify a license version number, you may choose any
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418 | version ever published by the Free Software Foundation.
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419 |
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420 | 14. If you wish to incorporate parts of the Library into other free
|
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421 | programs whose distribution conditions are incompatible with these,
|
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422 | write to the author to ask for permission. For software which is
|
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423 | copyrighted by the Free Software Foundation, write to the Free
|
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424 | Software Foundation; we sometimes make exceptions for this. Our
|
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425 | decision will be guided by the two goals of preserving the free
|
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426 | status of all derivatives of our free software and of promoting
|
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427 | the sharing and reuse of software generally.
|
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428 |
|
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429 | NO WARRANTY
|
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430 |
|
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431 | 15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
|
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432 | WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE
|
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433 | LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
|
---|
434 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT
|
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435 | WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT
|
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436 | NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
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437 | FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE
|
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438 | QUALITY AND PERFORMANCE OF THE LIBRARY IS WITH YOU. SHOULD THE
|
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439 | LIBRARY PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY
|
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440 | SERVICING, REPAIR OR CORRECTION.
|
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441 |
|
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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
|
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444 | MODIFY AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE
|
---|
445 | LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL,
|
---|
446 | INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR
|
---|
447 | INABILITY TO USE THE LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF
|
---|
448 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU
|
---|
449 | OR THIRD PARTIES OR A FAILURE OF THE LIBRARY TO OPERATE WITH ANY
|
---|
450 | OTHER SOFTWARE), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN
|
---|
451 | ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
|
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452 |
|
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453 | END OF TERMS AND CONDITIONS
|
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454 |
|
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455 | How to Apply These Terms to Your New Libraries
|
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456 | ==============================================
|
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457 |
|
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458 | If you develop a new library, and you want it to be of the greatest
|
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459 | possible use to the public, we recommend making it free software that
|
---|
460 | everyone can redistribute and change. You can do so by permitting
|
---|
461 | redistribution under these terms (or, alternatively, under the terms of
|
---|
462 | the ordinary General Public License).
|
---|
463 |
|
---|
464 | To apply these terms, attach the following notices to the library.
|
---|
465 | It is safest to attach them to the start of each source file to most
|
---|
466 | effectively convey the exclusion of warranty; and each file should have
|
---|
467 | at least the "copyright" line and a pointer to where the full notice is
|
---|
468 | found.
|
---|
469 |
|
---|
470 | ONE LINE TO GIVE THE LIBRARY'S NAME AND AN IDEA OF WHAT IT DOES.
|
---|
471 | Copyright (C) YEAR NAME OF AUTHOR
|
---|
472 |
|
---|
473 | This library is free software; you can redistribute it and/or modify it
|
---|
474 | under the terms of the GNU Library General Public License as published
|
---|
475 | by the Free Software Foundation; either version 2 of the License, or (at
|
---|
476 | your option) any later version.
|
---|
477 |
|
---|
478 | This library is distributed in the hope that it will be useful, but
|
---|
479 | WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
480 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
---|
481 | Library General Public License for more details.
|
---|
482 |
|
---|
483 | You should have received a copy of the GNU General Public License along
|
---|
484 | with this program; if not, write to the Free Software Foundation, Inc.,
|
---|
485 | 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
|
---|
486 |
|
---|
487 | Also add information on how to contact you by electronic and paper
|
---|
488 | mail.
|
---|
489 |
|
---|
490 | You should also get your employer (if you work as a programmer) or
|
---|
491 | your school, if any, to sign a "copyright disclaimer" for the library,
|
---|
492 | if necessary. Here is a sample; alter the names:
|
---|
493 |
|
---|
494 | Yoyodyne, Inc., hereby disclaims all copyright interest in the library
|
---|
495 | `Frob' (a library for tweaking knobs) written by James Random Hacker.
|
---|
496 |
|
---|
497 | SIGNATURE OF TY COON, 1 April 1990
|
---|
498 | Ty Coon, President of Vice
|
---|
499 |
|
---|
500 | That's all there is to it!
|
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501 |
|
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