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<h1 align='right'><a name='LICENSE'>A - GNU Library General |
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Public License</a></h1> |
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<p align='center'>Version 2, June 1991 |
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<br />Copyright (C) 1991 Free Software Foundation, Inc. |
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<br />59 Temple Place - Suite 330, Boston, MA 02111-1307, USA |
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<br />Everyone is permitted to copy and distribute verbatim copies of |
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this license document, but changing it is not allowed. |
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<br />[This is the first released version of the library GPL. It is |
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numbered 2 because it goes with version 2 of the ordinary GPL.]</p> |
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<p><big>Preamble</big></p> |
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<p>The licenses for most software are designed to take away your freedom |
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to share and change it. By contrast, the GNU General Public Licenses |
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are intended to guarantee your freedom to share and change free |
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software--to make sure the software is free for all its users.</p> |
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<p>This license, the Library General Public License, applies to some |
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specially designated Free Software Foundation software, and to any |
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other libraries whose authors decide to use it. You can use it for |
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your libraries, too.</p> |
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<p>When we speak of free software, we are referring to freedom, |
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not price. Our General Public Licenses are designed to make sure |
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that you have the freedom to distribute copies of free software |
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(and charge for this service if you wish), that you receive |
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source code or can get it if you want it, that you can change |
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the software or use pieces of it in new free programs; and that |
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you know you can do these things.</p> |
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<p>To protect your rights, we need to make restrictions that |
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forbid anyone to deny you these rights or to ask you to |
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responsibilities for you if you distribute copies of the |
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library, or if you modify it.</p> |
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<p>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, receive or |
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<p>Also, for each distributor's protection, we want to make |
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certain that everyone understands that there is no warranty for |
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have is not the original version, so that any problems |
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introduced by others will not reflect on the original authors' |
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reputations.</p> |
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<p>Finally, any free program is threatened constantly by |
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licensed at all.</p> |
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<p>Most GNU software, including some libraries, is covered by |
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the ordinary GNU General Public License, which was designed for |
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utility programs. This license, the GNU Library General Public |
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License, applies to certain designated libraries. This license |
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is quite different from the ordinary one; be sure to read it in |
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full, and don't assume that anything in it is the same as in the |
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ordinary license.</p> |
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<p>The reason we have a separate public license for some |
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libraries is that they blur the distinction we usually make |
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between modifying or adding to a program and simply using it. |
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Linking a program with a library, without changing the library, |
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is in some sense simply using the library, and is analogous to |
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running a utility program or application program. However, in a |
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textual and legal sense, the linked executable is a combined |
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work, a derivative of the original library, and the ordinary |
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General Public License treats it as such.</p> |
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<p>Because of this blurred distinction, using the ordinary |
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General Public License for libraries did not effectively promote |
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software sharing, because most developers did not use the |
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libraries. We concluded that weaker conditions might promote |
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sharing better.</p> |
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<p>However, unrestricted linking of non-free programs would |
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License is intended to permit developers of non-free programs to |
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<p>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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library.</p> |
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<p>Note that it is possible for a library to be covered by the |
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ordinary General Public License rather than by this special |
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<p align='center'><big>TERMS AND CONDITIONS FOR COPYING, |
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DISTRIBUTION AND MODIFICATION</big></p> |
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<p><strong>0.</strong> This License Agreement applies to any |
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software library which contains a notice placed by the copyright |
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<p>A "library" means a collection of software |
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<p><strong>1.</strong> You may copy and distribute verbatim |
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<blockquote> |
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<p><strong>a)</strong> The modified work must itself be |
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a software library. |
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<p><strong>b)</strong> You must cause the files modified |
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<p><strong>c)</strong> You must cause the whole of the |
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<p><strong>d)</strong> If a facility in the modified |
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supplied by an application program that uses the |
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facility is invoked, then you must make a good faith |
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effort to ensure that, in the event an application does |
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not supply such function or table, the facility still |
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operates, and performs whatever part of its purpose |
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remains meaningful.</p> |
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<p>(For example, a function in a library to compute |
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square roots has a purpose that is entirely well-defined |
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independent of the application. Therefore, Subsection 2d |
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requires that any application-supplied function or table |
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used by this function must be optional: if the |
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application does not supply it, the square root function |
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must still compute square roots.)</p> |
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</blockquote> |
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<p>These requirements apply to the modified work as a whole. If |
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identifiable sections of that work are not derived from the |
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do not apply to those sections when you distribute them as |
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distribution of the whole must be on the terms of this License, |
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whose permissions for other licensees extend to the entire |
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whole, and thus to each and every part regardless of who wrote |
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<p>Thus, it is not the intent of this section to claim rights or |
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not bring the other work under the scope of this License.</p> |
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<p><strong>3.</strong> You may opt to apply the terms of the |
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<p>This option is useful when you wish to copy part of the code |
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<p><strong>4.</strong> You may copy and distribute the Library |
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above provided that you accompany it with the complete |
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distributed under the terms of Sections 1 and 2 above on a |
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<p>If distribution of object code is made by offering access to |
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isolation, is not a derivative work of the Library, and |
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therefore falls outside the scope of this License.</p> |
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<p>However, linking a "work that uses the Library" |
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with the Library creates an executable that is a derivative of |
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the Library (because it contains portions of the Library), |
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rather than a "work that uses the library". The |
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executable is therefore covered by this License. Section 6 |
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states terms for distribution of such executables.</p> |
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<p>When a "work that uses the Library" uses material |
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from a header file that is part of the Library, the object code |
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for the work may be a derivative work of the Library even though |
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the 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 |
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is not precisely defined by law.</p> |
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<p>If such an object file uses only numerical parameters, data |
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structure layouts and accessors, and small macros and small |
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inline functions (ten lines or less in length), then the use of |
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the object file is unrestricted, regardless of whether it is |
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legally a derivative work. (Executables containing this object |
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code plus portions of the Library will still fall under Section |
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6.)</p> |
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<p>Otherwise, if the work is a derivative of the Library, you |
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may distribute the object code for the work under the terms of |
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Section 6. Any executables containing that work also fall under |
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Section 6, whether or not they are linked directly with the |
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Library itself.</p> |
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<p><strong>6.</strong> As an exception to the Sections above, |
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you may also compile or link a "work that uses the |
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Library" with the Library to produce a work containing |
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portions of the Library, and distribute that work under terms of |
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your choice, provided that the terms permit modification of the |
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work for the customer's own use and reverse engineering for |
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debugging such modifications.</p> |
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<p>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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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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copy of this License. Also, you must do one of these things:</p> |
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<blockquote> |
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<strong>a)</strong> Accompany the work with the complete |
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corresponding machine-readable source code for the |
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Library including whatever changes were used in the work |
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(which must be distributed under Sections 1 and 2 |
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above); and, if the work is an executable linked with |
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the Library, with the complete machine-readable |
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"work that uses the Library", as object code |
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and/or source code, so that the user can modify the |
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Library and then relink to produce a modified executable |
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containing the modified Library. (It is understood that |
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the user who changes the contents of definitions files |
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in the Library will not necessarily be able to recompile |
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the application to use the modified definitions.) |
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<p><strong>b)</strong> Accompany the work with a written |
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offer, valid for at least three years, to give the same |
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user the materials specified in Subsection 6a, above, |
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for a charge no more than the cost of performing this |
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distribution.</p> |
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<p><strong>c)</strong> If distribution of the work is |
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made by offering access to copy from a designated place, |
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offer equivalent access to copy the above specified |
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materials from the same place.</p> |
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<p><strong>d)</strong> Verify that the user has already |
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received a copy of these materials or that you have |
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already sent this user a copy.</p> |
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</blockquote> |
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<p>For an executable, the required form of the "work that |
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uses the Library" must include any data and utility |
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programs needed for reproducing the executable from it. However, |
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as a special exception, the source code 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, and |
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so on) of the operating system on which the executable runs, |
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unless that component itself accompanies the executable.</p> |
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<p>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 means you |
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cannot use both them and the Library together in an executable |
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that you distribute.</p> |
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<p><strong>7.</strong> You may place library facilities that are |
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a work based on the Library side-by-side in a single library |
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together with other library facilities not covered by this |
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License, and distribute such a combined library, provided that |
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the separate distribution of the work based on the Library and |
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of the other library facilities is otherwise permitted, and |
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provided that you do these two things:</p> |
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<blockquote> |
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<strong>a)</strong> Accompany the combined library with |
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a copy of the same work based on the Library, uncombined |
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|
with any other library facilities. This must be |
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distributed under the terms of the Sections above. |
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<p><strong>b)</strong> Give prominent notice with the |
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combined library of the fact that part of it is a work |
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based on the Library, and explaining where to find the |
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accompanying uncombined form of the same work.</p> |
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</blockquote> |
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<p><strong>8.</strong> You may not copy, modify, sublicense, |
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link with, or distribute the Library except as expressly |
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provided under this License. Any attempt otherwise to copy, |
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modify, sublicense, link with, or distribute the Library is |
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void, and will automatically terminate your rights under this |
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License. However, parties who have received copies, or rights, |
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from you under this License will not have their licenses |
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terminated so long as such parties remain in full |
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compliance.</p> |
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<p><strong>9.</strong> You are not required to accept this |
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License, since you have not signed it. However, nothing else |
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grants you permission to modify or distribute the Library or its |
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derivative works. These actions are prohibited by law if you do |
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not accept this License. Therefore, by modifying or distributing |
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the Library (or any work based on the Library), you indicate |
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your acceptance of this License to do so, and all its terms and |
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conditions for copying, distributing or modifying the Library or |
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works based on it.</p> |
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<p><strong>10.</strong> Each time you redistribute the Library |
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(or any work based on the Library), the recipient automatically |
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receives a license from the original licensor to copy, |
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distribute, link with or modify the Library subject to these |
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terms and conditions. You may not impose any further |
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restrictions on the recipients' exercise of the rights granted |
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herein. You are not responsible for enforcing compliance by |
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third parties to this License.</p> |
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<p><strong>11.</strong> If, as a consequence of a court judgment |
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or allegation of patent infringement or for any other reason |
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(not limited to patent issues), conditions are imposed on you |
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(whether by court order, agreement or otherwise) that contradict |
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the conditions of this License, they do not excuse you from the |
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conditions of this License. If you cannot distribute so as to |
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satisfy simultaneously your obligations under this License and |
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any other pertinent obligations, then as a consequence you may |
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not distribute the Library at all. For example, if a patent |
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license would not permit royalty-free redistribution of the |
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Library by all those who receive copies directly or indirectly |
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through you, then the only way you could satisfy both it and |
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this License would be to refrain entirely from distribution of |
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the Library.</p> |
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<p>If any portion of this section is held invalid or |
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unenforceable under any particular circumstance, the balance of |
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the section is intended to apply, and the section as a whole is |
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intended to apply in other circumstances.</p> |
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<p>It is not the purpose of this section to induce you to |
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infringe any patents or other property right claims or to |
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contest validity of any such claims; this section has the sole |
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purpose of protecting the integrity of the free software |
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distribution system which is implemented by public license |
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practices. Many people have made generous contributions to the |
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wide range of software distributed through that system in |
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reliance on consistent application of that system; it is up to |
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the author/donor to decide if he or she is willing to distribute |
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software through any other system and a licensee cannot impose |
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that choice.</p> |
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<p>This section is intended to make thoroughly clear what is |
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believed to be a consequence of the rest of this License.</p> |
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<p><strong>12.</strong> If the distribution and/or use of the |
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Library is restricted in certain countries either by patents or |
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by copyrighted interfaces, the original copyright holder who |
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places the Library under this License may add an explicit |
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geographical distribution limitation excluding those countries, |
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so that distribution is permitted only in or among countries not |
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thus excluded. In such case, this License incorporates the |
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limitation as if written in the body of this License.</p> |
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<p><strong>13.</strong> The Free Software Foundation may publish |
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revised and/or new versions of the Library General Public |
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License from time to time. Such new versions will be similar in |
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spirit to the present version, but may differ in detail to |
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|
address new problems or concerns.</p> |
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<p>Each version is given a distinguishing version number. If the |
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Library specifies a version number of this License which applies |
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to it and "any later version", you have the option of |
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following the terms and conditions either of that version or of |
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|
any later version published by the Free Software Foundation. If |
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the Library does not specify a license version number, you may |
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choose any version ever published by the Free Software |
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Foundation.</p> |
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<p><strong>14.</strong> If you wish to incorporate parts of the |
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Library into other free programs whose distribution conditions |
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are incompatible with these, write to the author to ask for |
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permission. For software which is copyrighted by the Free |
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Software Foundation, write to the Free Software Foundation; we |
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sometimes make exceptions for this. Our decision will be guided |
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|
by the two goals of preserving the free status of all |
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derivatives of our free software and of promoting the sharing |
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and reuse of software generally.</p> |
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<p align='center'><big>NO WARRANTY</big></p> |
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<p><strong>15.</strong> BECAUSE THE LIBRARY IS LICENSED FREE OF |
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|
CHARGE, THERE IS NO WARRANTY FOR THE LIBRARY, TO THE EXTENT |
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PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN |
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WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE |
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LIBRARY "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER |
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EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF |
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THE LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU |
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ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR |
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CORRECTION.</p> |
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<p><strong>16.</strong> IN NO EVENT UNLESS REQUIRED BY |
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APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT |
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HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE |
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THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, |
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INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL |
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DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE LIBRARY |
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(INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING |
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RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES |
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OR A FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), |
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EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE |
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POSSIBILITY OF SUCH DAMAGES.</p> |
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<p align='center'><big>END OF TERMS AND CONDITIONS</big></p> |
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</body> |
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</html> |
Michael R Sweet
20 years ago