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| <h2>GNU Lesser General Public License, version 2.1</h2> |
| |
| <ul> |
| <li><a href="/licenses/lgpl.html">The latest version of the LGPL, version |
| 3</a></li> |
| <li><a href="/licenses/why-not-lgpl.html">Why you shouldn't use the Lesser |
| GPL for your next library</a></li> |
| <li><a href="/licenses/gpl-violation.html">What to do if you see a possible |
| LGPL violation</a></li> |
| <li><a href="/licenses/old-licenses/lgpl-2.1-translations.html">Translations |
| of LGPLv2.1</a></li> |
| <li>The GNU Lesser General Public License version 2.1 (LGPLv2.1) in other |
| formats: <a href="/licenses/old-licenses/lgpl-2.1.txt">plain text</a>, <a |
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| the LGPL</a></li> |
| </ul> |
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| <hr /> |
| |
| <p>This GNU Lesser General Public License counts as the successor of the GNU |
| Library General Public License. For an explanation of why this change was |
| necessary, read the <a href="/licenses/why-not-lgpl.html">Why you shouldn't use |
| the Lesser GPL for your next library</a> article.</p> |
| |
| <h3>Table of Contents</h3> |
| <ul> |
| <li><a id="TOC1" href="#SEC1">GNU LESSER GENERAL PUBLIC LICENSE</a> |
| <ul> |
| <li><a id="TOC2" href="#SEC2">Preamble</a></li> |
| <li><a id="TOC3" href="#SEC3">TERMS AND CONDITIONS FOR COPYING, |
| DISTRIBUTION AND MODIFICATION</a></li> |
| <li><a id="TOC4" href="#SEC4">How to Apply These Terms to Your New |
| Libraries</a></li> |
| </ul> |
| </li> |
| </ul> |
| |
| <hr style="clear: both;" /> |
| |
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| <h3><a id="SEC1">GNU LESSER GENERAL PUBLIC LICENSE</a></h3> |
| <p> |
| Version 2.1, February 1999 |
| </p> |
| |
| <pre> |
| Copyright (C) 1991, 1999 Free Software Foundation, Inc. |
| 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| Everyone is permitted to copy and distribute verbatim copies |
| of this license document, but changing it is not allowed. |
| |
| [This is the first released version of the Lesser GPL. It also counts |
| as the successor of the GNU Library Public License, version 2, hence |
| the version number 2.1.] |
| </pre> |
| |
| |
| <h3><a id="SEC2">Preamble</a></h3> |
| |
| <p> |
| The licenses for most software are designed to take away your |
| freedom to share and change it. By contrast, the GNU General Public |
| Licenses are intended to guarantee your freedom to share and change |
| free software--to make sure the software is free for all its users. |
| </p> |
| <p> |
| This license, the Lesser General Public License, applies to some |
| specially designated software packages--typically libraries--of the |
| Free Software Foundation and other authors who decide to use it. You |
| can use it too, but we suggest you first think carefully about whether |
| this license or the ordinary General Public License is the better |
| strategy to use in any particular case, based on the explanations below. |
| </p> |
| <p> |
| When we speak of free software, we are referring to freedom of use, |
| not price. Our General Public Licenses are designed to make sure that |
| you have the freedom to distribute copies of free software (and charge |
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| it if you want it; that you can change the software and use pieces of |
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| these things. |
| </p> |
| <p> |
| To protect your rights, we need to make restrictions that forbid |
| distributors to deny you these rights or to ask you to surrender these |
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| </p> |
| <p> |
| For example, if you distribute copies of the library, whether gratis |
| or for a fee, you must give the recipients all the rights that we gave |
| you. You must make sure that they, too, receive or can get the source |
| code. If you link other code with the library, you must provide |
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| We protect your rights with a two-step method: (1) we copyright the |
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| To protect each distributor, we want to make it very clear that |
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| </p> |
| <p> |
| Finally, software patents pose a constant threat to the existence of |
| any free program. We wish to make sure that a company cannot |
| effectively restrict the users of a free program by obtaining a |
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| any patent license obtained for a version of the library must be |
| consistent with the full freedom of use specified in this license. |
| </p> |
| <p> |
| Most GNU software, including some libraries, is covered by the |
| ordinary GNU General Public License. This license, the GNU Lesser |
| General Public License, applies to certain designated libraries, and |
| is quite different from the ordinary General Public License. We use |
| this license for certain libraries in order to permit linking those |
| libraries into non-free programs. |
| </p> |
| <p> |
| When a program is linked with a library, whether statically or using |
| a shared library, the combination of the two is legally speaking a |
| combined work, a derivative of the original library. The ordinary |
| General Public License therefore permits such linking only if the |
| entire combination fits its criteria of freedom. The Lesser General |
| Public License permits more lax criteria for linking other code with |
| the library. |
| </p> |
| <p> |
| We call this license the "Lesser" General Public License because it |
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| For example, on rare occasions, there may be a special need to |
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| library does the same job as widely used non-free libraries. In this |
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| In other cases, permission to use a particular library in non-free |
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| operating system, as well as its variant, the GNU/Linux operating |
| system. |
| </p> |
| <p> |
| Although the Lesser General Public License is Less protective of the |
| users' freedom, it does ensure that the user of a program that is |
| linked with the Library has the freedom and the wherewithal to run |
| that program using a modified version of the Library. |
| </p> |
| <p> |
| The precise terms and conditions for copying, distribution and |
| modification follow. Pay close attention to the difference between a |
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| former contains code derived from the library, whereas the latter must |
| be combined with the library in order to run. |
| </p> |
| |
| <h3><a id="SEC3">TERMS AND CONDITIONS FOR COPYING, |
| DISTRIBUTION AND MODIFICATION</a></h3> |
| |
| |
| <p> |
| <strong>0.</strong> |
| This License Agreement applies to any software library or other |
| program which contains a notice placed by the copyright holder or |
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| Each licensee is addressed as "you". |
| </p> |
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| A "library" means a collection of software functions and/or data |
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| The "Library", below, refers to any such software library or work |
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| "Source code" for a work means the preferred form of the work for |
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| Activities other than copying, distribution and modification are not |
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| You may copy and distribute verbatim copies of the Library's |
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| <strong>7.</strong> You may place library facilities that are a work |
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| <li><strong>a)</strong> Accompany the combined library with a copy |
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| <strong>8.</strong> You may not copy, modify, sublicense, link with, |
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| This section is intended to make thoroughly clear what is believed to |
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| <p> |
| <strong>12.</strong> |
| If the distribution and/or use of the Library is restricted in |
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| <strong>13.</strong> |
| The Free Software Foundation may publish revised and/or new |
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| If you wish to incorporate parts of the Library into other free |
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| <strong>NO WARRANTY</strong> |
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| <strong>15.</strong> |
| BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO |
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| |
| <h3>END OF TERMS AND CONDITIONS</h3> |
| |
| <h3><a id="SEC4">How to Apply These Terms to Your New |
| Libraries</a></h3> |
| <p> |
| If you develop a new library, and you want it to be of the greatest |
| possible use to the public, we recommend making it free software that |
| everyone can redistribute and change. You can do so by permitting |
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| ordinary General Public License). |
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| <p> |
| To apply these terms, attach the following notices to the library. It is |
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| "copyright" line and a pointer to where the full notice is found. |
| </p> |
| |
| <pre> |
| <var>one line to give the library's name and an idea of what it does.</var> |
| Copyright (C) <var>year</var> <var>name of author</var> |
| |
| This library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| This library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with this library; if not, write to the Free Software |
| Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| </pre> |
| |
| <p> |
| Also add information on how to contact you by electronic and paper mail. |
| </p> |
| <p> |
| You should also get your employer (if you work as a programmer) or your |
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| necessary. Here is a sample; alter the names: |
| </p> |
| |
| <pre> |
| Yoyodyne, Inc., hereby disclaims all copyright interest in |
| the library `Frob' (a library for tweaking knobs) written |
| by James Random Hacker. |
| |
| <var>signature of Ty Coon</var>, 1 April 1990 |
| Ty Coon, President of Vice |
| </pre> |
| |
| <p> |
| That's all there is to it!</p> |
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