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$Software::License::LGPL_2_1::VERSION = '0.104002'; |
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use parent 'Software::License'; |
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# ABSTRACT: GNU Lesser General Public License, Version 2.1 |
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=encoding UTF-8 |
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=head1 NAME |
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Software::License::LGPL_2_1 - GNU Lesser General Public License, Version 2.1 |
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=head1 VERSION |
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version 0.104002 |
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=head1 PERL VERSION |
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This module is part of CPAN toolchain, or is treated as such. As such, it |
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follows the agreement of the Perl Toolchain Gang to require no newer version of |
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perl than v5.8.1. This version may change by agreement of the Toolchain Gang, |
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but for now is governed by the L<Lancaster |
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Consensus|https://github.com/Perl-Toolchain-Gang/toolchain-site/blob/master/lancaster-consensus.md> |
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of 2013. |
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=head1 AUTHOR |
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Ricardo Signes <rjbs@semiotic.systems> |
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=head1 COPYRIGHT AND LICENSE |
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This software is copyright (c) 2022 by Ricardo Signes. |
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This is free software; you can redistribute it and/or modify it under |
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the same terms as the Perl 5 programming language system itself. |
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=cut |
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__LICENSE__ |
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The GNU Lesser General Public License (LGPL) |
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Version 2.1, February 1999 |
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(The master copy of this license lives on the GNU website.) |
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Copyright (C) 1991, 1999 Free Software Foundation, Inc. 59 |
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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Everyone is permitted to copy and distribute verbatim copies |
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of this license document, but changing it is not allowed. |
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[This is the first released version of the Lesser GPL. It also |
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counts as the successor of the GNU Library Public License, |
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version 2, hence the version number 2.1.] |
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Preamble |
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The licenses for most software are designed to take away |
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your freedom to share and change it. By contrast, the GNU |
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General Public Licenses are intended to guarantee your |
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freedom to share and change free software--to make sure the |
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software is free for all its users. |
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68
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This license, the Lesser General Public License, applies to |
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some specially designated software packages--typically |
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libraries--of the Free Software Foundation and other authors |
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who decide to use it. You can use it too, but we suggest you |
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first think carefully about whether this license or the ordinary |
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General Public License is the better strategy to use in any |
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particular case, based on the explanations below. |
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When we speak of free software, we are referring to freedom |
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of use, not price. Our General Public Licenses are designed |
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to make sure that you have the freedom to distribute copies |
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of free software (and charge for this service if you wish); that |
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you receive source code or can get it if you want it; that you |
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can change the software and use pieces of it in new free |
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programs; and that you are informed that you can do these |
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things. |
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85
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To protect your rights, we need to make restrictions that |
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forbid distributors to deny you these rights or to ask you to |
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surrender these rights. These restrictions translate to certain |
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responsibilities for you if you distribute copies of the library |
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or if you modify it. |
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For example, if you distribute copies of the library, whether |
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gratis or for a fee, you must give the recipients all the rights |
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that we gave you. You must make sure that they, too, |
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receive or can get the source code. If you link other code |
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with the library, you must provide complete object files to the |
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recipients, so that they can relink them with the library after |
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making changes to the library and recompiling it. And you |
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must show them these terms so they know their rights. |
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100
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We protect your rights with a two-step method: (1) we |
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copyright the library, and (2) we offer you this license, which |
102
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gives you legal permission to copy, distribute and/or modify |
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the library. |
104
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105
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To protect each distributor, we want to make it very clear |
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that there is no warranty for the free library. Also, if the |
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library is modified by someone else and passed on, the |
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recipients should know that what they have is not the original |
109
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version, so that the original author's reputation will not be |
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affected by problems that might be introduced by others. |
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112
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Finally, software patents pose a constant threat to the |
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existence of any free program. We wish to make sure that a |
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company cannot effectively restrict the users of a free |
115
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program by obtaining a restrictive license from a patent |
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holder. Therefore, we insist that any patent license obtained |
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for a version of the library must be consistent with the full |
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freedom of use specified in this license. |
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120
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Most GNU software, including some libraries, is covered by |
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the ordinary GNU General Public License. This license, the |
122
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GNU Lesser General Public License, applies to certain |
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designated libraries, and is quite different from the ordinary |
124
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General Public License. We use this license for certain |
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libraries in order to permit linking those libraries into non-free |
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programs. |
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128
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When a program is linked with a library, whether statically or |
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using a shared library, the combination of the two is legally |
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speaking a combined work, a derivative of the original library. |
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The ordinary General Public License therefore permits such |
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linking only if the entire combination fits its criteria of |
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freedom. The Lesser General Public License permits more |
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lax criteria for linking other code with the library. |
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136
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We call this license the "Lesser" General Public License |
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because it does Less to protect the user's freedom than the |
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ordinary General Public License. It also provides other free |
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software developers Less of an advantage over competing |
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non-free programs. These disadvantages are the reason we |
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use the ordinary General Public License for many libraries. |
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However, the Lesser license provides advantages in certain |
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special circumstances. |
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145
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For example, on rare occasions, there may be a special |
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need to encourage the widest possible use of a certain |
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library, so that it becomes a de-facto standard. To achieve |
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this, non-free programs must be allowed to use the library. A |
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more frequent case is that a free library does the same job |
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as widely used non-free libraries. In this case, there is little |
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to gain by limiting the free library to free software only, so we |
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use the Lesser General Public License. |
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In other cases, permission to use a particular library in |
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non-free programs enables a greater number of people to use |
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a large body of free software. For example, permission to |
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use the GNU C Library in non-free programs enables many |
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more people to use the whole GNU operating system, as |
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well as its variant, the GNU/Linux operating system. |
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Although the Lesser General Public License is Less |
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protective of the users' freedom, it does ensure that the user |
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of a program that is linked with the Library has the freedom |
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and the wherewithal to run that program using a modified |
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version of the Library. |
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167
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The precise terms and conditions for copying, distribution |
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and modification follow. Pay close attention to the difference |
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between a "work based on the library" and a "work that uses |
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the library". The former contains code derived from the |
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library, whereas the latter must be combined with the library |
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in order to run. |
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TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION |
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AND MODIFICATION |
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0. This License Agreement applies to any software library or |
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other program which contains a notice placed by the |
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copyright holder or other authorized party saying it may be |
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distributed under the terms of this Lesser General Public |
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License (also called "this License"). Each licensee is |
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addressed as "you". |
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A "library" means a collection of software functions and/or |
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data prepared so as to be conveniently linked with |
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application programs (which use some of those functions |
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and data) to form executables. |
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The "Library", below, refers to any such software library or |
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work which has been distributed under these terms. A "work |
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based on the Library" means either the Library or any |
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derivative work under copyright law: that is to say, a work |
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containing the Library or a portion of it, either verbatim or with |
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modifications and/or translated straightforwardly into another |
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language. (Hereinafter, translation is included without |
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limitation in the term "modification".) |
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"Source code" for a work means the preferred form of the |
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work for making modifications to it. For a library, complete |
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source code means all the source code for all modules it |
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contains, plus any associated interface definition files, plus |
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the scripts used to control compilation and installation of the |
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library. |
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Activities other than copying, distribution and modification |
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are not covered by this License; they are outside its scope. |
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The act of running a program using the Library is not |
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restricted, and output from such a program is covered only if |
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its contents constitute a work based on the Library |
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(independent of the use of the Library in a tool for writing it). |
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Whether that is true depends on what the Library does and |
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what the program that uses the Library does. |
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1. You may copy and distribute verbatim copies of the |
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Library's complete source code as you receive it, in any |
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medium, provided that you conspicuously and appropriately |
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publish on each copy an appropriate copyright notice and |
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disclaimer of warranty; keep intact all the notices that refer |
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to this License and to the absence of any warranty; and |
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distribute a copy of this License along with the Library. |
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library. |
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prominent notices stating that you changed the |
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c) You must cause the whole of the work to be |
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licensed at no charge to all third parties under |
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the terms of this License. |
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d) If a facility in the modified Library refers to a |
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function or a table of data to be supplied by an |
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effort to ensure that, in the event an application |
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does not supply such function or table, the |
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facility still operates, and performs whatever |
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part of its purpose remains meaningful. |
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compute square roots has a purpose that is |
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entirely well-defined independent of the |
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application. Therefore, Subsection 2d requires |
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application does not supply it, the square root |
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function must still compute square roots.) |
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reasonably considered independent and |
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separate works in themselves, then this |
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License, and its terms, do not apply to those |
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sections when you distribute them as separate |
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works. But when you distribute the same |
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sections as part of a whole which is a work |
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based on the Library, the distribution of the |
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whole must be on the terms of this License, |
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whose permissions for other licensees extend |
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to the entire whole, and thus to each and every |
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Thus, it is not the intent of this section to claim |
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rights or contest your rights to work written |
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entirely by you; rather, the intent is to exercise |
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the right to control the distribution of derivative |
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or collective works based on the Library. |
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In addition, mere aggregation of another work |
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with a work based on the Library) on a volume |
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of a storage or distribution medium does not |
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bring the other work under the scope of this |
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License. |
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3. You may opt to apply the terms of the ordinary GNU |
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General Public License instead of this License to a given |
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copy of the Library. To do this, you must alter all the notices |
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that refer to this License, so that they refer to the ordinary |
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GNU General Public License, version 2, instead of to this |
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License. (If a newer version than version 2 of the ordinary |
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GNU General Public License has appeared, then you can |
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specify that version instead if you wish.) Do not make any |
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other change in these notices. |
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Once this change is made in a given copy, it is irreversible |
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for that copy, so the ordinary GNU General Public License |
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applies to all subsequent copies and derivative works made |
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from that copy. |
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of the Library into a program that is not a library. |
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4. You may copy and distribute the Library (or a portion or |
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derivative of it, under Section 2) in object code or executable |
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form under the terms of Sections 1 and 2 above provided that |
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you accompany it with the complete corresponding |
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machine-readable source code, which must be distributed |
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under the terms of Sections 1 and 2 above on a medium |
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customarily used for software interchange. |
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If distribution of object code is made by offering access to |
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copy from a designated place, then offering equivalent |
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access to copy the source code from the same place |
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satisfies the requirement to distribute the source code, even |
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though third parties are not compelled to copy the source |
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along with the object code. |
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5. A program that contains no derivative of any portion of the |
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Library, but is designed to work with the Library by being |
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compiled or linked with it, is called a "work that uses the |
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Library". Such a work, in isolation, is not a derivative work of |
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the Library, and therefore falls outside the scope of this |
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License. |
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However, linking a "work that uses the Library" with the |
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Library creates an executable that is a derivative of the |
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Library (because it contains portions of the Library), rather |
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than a "work that uses the library". The executable is |
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therefore covered by this License. Section 6 states terms for |
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distribution of such executables. |
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When a "work that uses the Library" uses material from a |
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header file that is part of the Library, the object code for the |
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work may be a derivative work of the Library even though the |
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source code is not. Whether this is true is especially |
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significant if the work can be linked without the Library, or if |
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the work is itself a library. The threshold for this to be true is |
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not precisely defined by law. |
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If such an object file uses only numerical parameters, data |
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structure layouts and accessors, and small macros and |
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small inline functions (ten lines or less in length), then the |
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use of the object file is unrestricted, regardless of whether it |
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is legally a derivative work. (Executables containing this |
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object code plus portions of the Library will still fall under |
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Section 6.) |
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Otherwise, if the work is a derivative of the Library, you may |
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distribute the object code for the work under the terms of |
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Section 6. Any executables containing that work also fall |
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under Section 6, whether or not they are linked directly with |
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the Library itself. |
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6. As an exception to the Sections above, you may also |
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combine or link a "work that uses the Library" with the |
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Library to produce a work containing portions of the Library, |
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and distribute that work under terms of your choice, provided |
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that the terms permit modification of the work for the |
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customer's own use and reverse engineering for debugging |
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such modifications. |
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You must give prominent notice with each copy of the work |
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that the Library is used in it and that the Library and its use |
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are covered by this License. You must supply a copy of this |
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License. If the work during execution displays copyright |
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notices, you must include the copyright notice for the Library |
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among them, as well as a reference directing the user to the |
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copy of this License. Also, you must do one of these things: |
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a) Accompany the work with the complete |
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corresponding machine-readable source code |
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for the Library including whatever changes were |
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used in the work (which must be distributed |
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under Sections 1 and 2 above); and, if the work |
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is an executable linked with the Library, with |
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the complete machine-readable "work that |
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uses the Library", as object code and/or |
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source code, so that the user can modify the |
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Library and then relink to produce a modified |
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executable containing the modified Library. (It |
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is understood that the user who changes the |
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contents of definitions files in the Library will |
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not necessarily be able to recompile the |
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application to use the modified definitions.) |
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b) Use a suitable shared library mechanism for |
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linking with the Library. A suitable mechanism |
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is one that (1) uses at run time a copy of the |
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library already present on the user's computer |
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system, rather than copying library functions |
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into the executable, and (2) will operate |
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properly with a modified version of the library, if |
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the user installs one, as long as the modified |
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version is interface-compatible with the version |
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that the work was made with. |
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c) Accompany the work with a written offer, |
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valid for at least three years, to give the same |
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user the materials specified in Subsection 6a, |
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above, for a charge no more than the cost of |
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performing this distribution. |
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d) If distribution of the work is made by offering |
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access to copy from a designated place, offer |
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equivalent access to copy the above specified |
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materials from the same place. |
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e) Verify that the user has already received a |
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copy of these materials or that you have |
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already sent this user a copy. |
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For an executable, the required form of the "work that uses |
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the Library" must include any data and utility programs |
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needed for reproducing the executable from it. However, as a |
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special exception, the materials to be distributed need not |
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include anything that is normally distributed (in either source |
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or binary form) with the major components (compiler, kernel, |
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and so on) of the operating system on which the executable |
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runs, unless that component itself accompanies the |
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executable. |
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It may happen that this requirement contradicts the license |
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restrictions of other proprietary libraries that do not normally |
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accompany the operating system. Such a contradiction |
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means you cannot use both them and the Library together in |
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an executable that you distribute. |
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7. You may place library facilities that are a work based on |
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the Library side-by-side in a single library together with other |
432
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library facilities not covered by this License, and distribute |
433
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such a combined library, provided that the separate |
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distribution of the work based on the Library and of the other |
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library facilities is otherwise permitted, and provided that you |
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do these two things: |
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a) Accompany the combined library with a |
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copy of the same work based on the Library, |
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uncombined with any other library facilities. |
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This must be distributed under the terms of the |
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Sections above. |
443
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444
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b) Give prominent notice with the combined |
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library of the fact that part of it is a work based |
446
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on the Library, and explaining where to find the |
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accompanying uncombined form of the same |
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work. |
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8. You may not copy, modify, sublicense, link with, or |
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distribute the Library except as expressly provided under this |
452
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License. Any attempt otherwise to copy, modify, sublicense, |
453
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link with, or distribute the Library is void, and will |
454
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automatically terminate your rights under this License. |
455
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However, parties who have received copies, or rights, from |
456
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you under this License will not have their licenses terminated |
457
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so long as such parties remain in full compliance. |
458
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459
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9. You are not required to accept this License, since you |
460
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have not signed it. However, nothing else grants you |
461
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permission to modify or distribute the Library or its derivative |
462
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works. These actions are prohibited by law if you do not |
463
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accept this License. Therefore, by modifying or distributing |
464
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the Library (or any work based on the Library), you indicate |
465
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your acceptance of this License to do so, and all its terms |
466
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and conditions for copying, distributing or modifying the |
467
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Library or works based on it. |
468
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469
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10. Each time you redistribute the Library (or any work |
470
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based on the Library), the recipient automatically receives a |
471
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license from the original licensor to copy, distribute, link with |
472
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or modify the Library subject to these terms and conditions. |
473
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You may not impose any further restrictions on the |
474
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recipients' exercise of the rights granted herein. You are not |
475
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responsible for enforcing compliance by third parties with this |
476
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License. |
477
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478
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11. If, as a consequence of a court judgment or allegation of |
479
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patent infringement or for any other reason (not limited to |
480
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patent issues), conditions are imposed on you (whether by |
481
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court order, agreement or otherwise) that contradict the |
482
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conditions of this License, they do not excuse you from the |
483
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conditions of this License. If you cannot distribute so as to |
484
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satisfy simultaneously your obligations under this License |
485
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and any other pertinent obligations, then as a consequence |
486
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you may not distribute the Library at all. For example, if a |
487
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patent license would not permit royalty-free redistribution of |
488
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the Library by all those who receive copies directly or |
489
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indirectly through you, then the only way you could satisfy |
490
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both it and this License would be to refrain entirely from |
491
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distribution of the Library. |
492
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493
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If any portion of this section is held invalid or unenforceable |
494
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under any particular circumstance, the balance of the |
495
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section is intended to apply, and the section as a whole is |
496
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intended to apply in other circumstances. |
497
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498
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It is not the purpose of this section to induce you to infringe |
499
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any patents or other property right claims or to contest |
500
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validity of any such claims; this section has the sole purpose |
501
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of protecting the integrity of the free software distribution |
502
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system which is implemented by public license practices. |
503
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Many people have made generous contributions to the wide |
504
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range of software distributed through that system in reliance |
505
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on consistent application of that system; it is up to the |
506
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author/donor to decide if he or she is willing to distribute |
507
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software through any other system and a licensee cannot |
508
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impose that choice. |
509
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510
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This section is intended to make thoroughly clear what is |
511
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believed to be a consequence of the rest of this License. |
512
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513
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12. If the distribution and/or use of the Library is restricted in |
514
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certain countries either by patents or by copyrighted |
515
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interfaces, the original copyright holder who places the |
516
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Library under this License may add an explicit geographical |
517
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distribution limitation excluding those countries, so that |
518
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distribution is permitted only in or among countries not thus |
519
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excluded. In such case, this License incorporates the |
520
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limitation as if written in the body of this License. |
521
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522
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13. The Free Software Foundation may publish revised |
523
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and/or new versions of the Lesser General Public License |
524
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from time to time. Such new versions will be similar in spirit |
525
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to the present version, but may differ in detail to address new |
526
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problems or concerns. |
527
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528
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Each version is given a distinguishing version number. If the |
529
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Library specifies a version number of this License which |
530
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applies to it and "any later version", you have the option of |
531
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following the terms and conditions either of that version or of |
532
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any later version published by the Free Software Foundation. |
533
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If the Library does not specify a license version number, you |
534
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may choose any version ever published by the Free Software |
535
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Foundation. |
536
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537
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14. If you wish to incorporate parts of the Library into other |
538
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|
free programs whose distribution conditions are incompatible |
539
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with these, write to the author to ask for permission. For |
540
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software which is copyrighted by the Free Software |
541
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Foundation, write to the Free Software Foundation; we |
542
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sometimes make exceptions for this. Our decision will be |
543
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guided by the two goals of preserving the free status of all |
544
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derivatives of our free software and of promoting the sharing |
545
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and reuse of software generally. |
546
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547
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NO WARRANTY |
548
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549
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15. BECAUSE THE LIBRARY IS LICENSED FREE OF |
550
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CHARGE, THERE IS NO WARRANTY FOR THE LIBRARY, |
551
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TO THE EXTENT PERMITTED BY APPLICABLE LAW. |
552
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EXCEPT WHEN OTHERWISE STATED IN WRITING THE |
553
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|
COPYRIGHT HOLDERS AND/OR OTHER PARTIES |
554
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PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY |
555
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OF ANY KIND, EITHER EXPRESSED OR IMPLIED, |
556
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
557
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|
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
558
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A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE |
559
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|
QUALITY AND PERFORMANCE OF THE LIBRARY IS WITH |
560
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|
YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU |
561
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|
ASSUME THE COST OF ALL NECESSARY SERVICING, |
562
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REPAIR OR CORRECTION. |
563
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564
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16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE |
565
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|
LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT |
566
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|
HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY |
567
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|
|
AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED |
568
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|
ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING |
569
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|
|
ANY GENERAL, SPECIAL, INCIDENTAL OR |
570
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|
|
CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE |
571
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|
|
OR INABILITY TO USE THE LIBRARY (INCLUDING BUT |
572
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|
NOT LIMITED TO LOSS OF DATA OR DATA BEING |
573
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|
|
RENDERED INACCURATE OR LOSSES SUSTAINED BY |
574
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|
YOU OR THIRD PARTIES OR A FAILURE OF THE |
575
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|
LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), |
576
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|
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN |
577
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|
ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. |
578
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579
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END OF TERMS AND CONDITIONS |