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3 <html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Appendix D. GNU General Public License</title><meta name="generator" content="DocBook XSL Stylesheets V1.73.2" /><link rel="start" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="spine.html" title="The GNU C++ Library" /><link rel="prev" href="appendix_free.html" title="Appendix C. Free Software Needs Free Documentation" /><link rel="next" href="bk01apds02.html" title="TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Appendix D. GNU General Public License</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="appendix_free.html">Prev</a> </td><th width="60%" align="center">The GNU C++ Library</th><td width="20%" align="right"> <a accesskey="n" href="bk01apds02.html">Next</a></td></tr></table><hr /></div><div class="appendix" lang="en" xml:lang="en"><div class="titlepage"><div><div><h1 class="title"><a id="appendix.gpl-2.0"></a>GNU General Public License</h1></div><div><p class="releaseinfo">Version 2, June 1991</p></div><div><p class="copyright">Copyright © 1989, 1991 Free Software Foundation, Inc.</p></div><div><div class="legalnotice"><a id="gpl-legalnotice"></a><p>
4 </p><div class="address"><p>Free Software Foundation, Inc. <br />
5 <span class="street">51 Franklin Street, Fifth Floor</span>, <br />
6 <span class="city">Boston</span>, <span class="state">MA</span> <span class="postcode">02110-1301</span><br />
7 <span class="country">USA</span><br />
9 </p><p>Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.</p></div></div><div><p class="pubdate">Version 2, June 1991</p></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="bk01apd.html#gpl-1">Preamble</a></span></dt><dt><span class="section"><a href="bk01apds02.html">TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION</a></span></dt><dd><dl><dt><span class="section"><a href="bk01apds02.html#gpl-2-0">Section 0</a></span></dt><dt><span class="section"><a href="bk01apds02.html#gpl-2-1">Section 1</a></span></dt><dt><span class="section"><a href="bk01apds02.html#gpl-2-2">Section 2</a></span></dt><dt><span class="section"><a href="bk01apds02.html#gpl-2-3">Section 3</a></span></dt><dt><span class="section"><a href="bk01apds02.html#gpl-2-4">Section 4</a></span></dt><dt><span class="section"><a href="bk01apds02.html#gpl-2-5">Section 5</a></span></dt><dt><span class="section"><a href="bk01apds02.html#gpl-2-6">Section 6</a></span></dt><dt><span class="section"><a href="bk01apds02.html#gpl-2-7">Section 7</a></span></dt><dt><span class="section"><a href="bk01apds02.html#gpl-2-8">Section 8</a></span></dt><dt><span class="section"><a href="bk01apds02.html#gpl-2-9">Section 9</a></span></dt><dt><span class="section"><a href="bk01apds02.html#gpl-2-10">Section 10</a></span></dt><dt><span class="section"><a href="bk01apds02.html#gpl-2-11">NO WARRANTY Section 11</a></span></dt><dt><span class="section"><a href="bk01apds02.html#gpl-2-12">Section 12</a></span></dt></dl></dd><dt><span class="section"><a href="bk01apds03.html">How to Apply These Terms to Your New Programs</a></span></dt></dl></div><div class="section" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="gpl-1"></a>Preamble</h2></div></div></div><p>The licenses for most software are designed to take away your
10 freedom to share and change it. By contrast, the GNU General Public License is
11 intended to guarantee your freedom to share and change
12 free software - to make sure the software is free for all its users.
13 This General Public License applies to most of the Free Software
14 Foundation's software and to any other program whose authors commit
15 to using it. (Some other Free Software Foundation software is covered
16 by the GNU Library General Public License instead.) You can apply it
17 to your programs, too.</p><p>When we speak of free software, we are referring to freedom, not price.
18 Our General Public Licenses are designed to make sure that you have the
19 freedom to distribute copies of free software (and charge for this
20 service if you wish), that you receive source code or can get it if you
21 want it, that you can change the software or use pieces of it in new free
22 programs; and that you know you can do these things.</p><p>To protect your rights, we need to make restrictions that forbid anyone
23 to deny you these rights or to ask you to surrender the rights. These
24 restrictions translate to certain responsibilities for you if you distribute
25 copies of the software, or if you modify it.</p><p>For example, if you distribute copies of such a program, whether gratis or
26 for a fee, you must give the recipients all the rights that you have. You
27 must make sure that they, too, receive or can get the source code. And you
28 must show them these terms so they know their rights.</p><p>We protect your rights with two steps:
29 </p><div class="orderedlist"><ol type="1"><li><p>copyright the software, and</p></li><li><p>offer you this license which gives you legal permission to copy,
30 distribute and/or modify the software.</p></li></ol></div><p>
31 </p><p>Also, for each author's protection and ours, we want to make certain that
32 everyone understands that there is no warranty for this free software. If
33 the software is modified by someone else and passed on, we want its
34 recipients to know that what they have is not the original, so that any
35 problems introduced by others will not reflect on the original authors'
36 reputations.</p><p>Finally, any free program is threatened constantly by software patents.
37 We wish to avoid the danger that redistributors of a free program will
38 individually obtain patent licenses, in effect making the program
39 proprietary. To prevent this, we have made it clear that any patent must be
40 licensed for everyone's free use or not licensed at all.</p><p>The precise terms and conditions for copying, distribution and modification
41 follow.</p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="appendix_free.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="spine.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01apds02.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Appendix C. Free Software Needs Free Documentation </td><td width="20%" align="center"><a accesskey="h" href="../spine.html">Home</a></td><td width="40%" align="right" valign="top"> TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION</td></tr></table></div></body></html>
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