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3.2.0 of GnuTLS.
Copyright (C) 2001-2013 Free Software Foundation, Inc.\\
Copyright (C) 2001-2013 Nikos Mavrogiannopoulos
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<p>
Next: <a href="Document-overview.html#Document-overview" accesskey="n" rel="next">Document overview</a>, Up: <a href="Introduction-to-GnuTLS.html#Introduction-to-GnuTLS" accesskey="u" rel="up">Introduction to GnuTLS</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Function-and-Data-Index.html#Function-and-Data-Index" title="Index" rel="index">Index</a>]</p>
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<hr>
<a name="Downloading-and-installing-1"></a>
<h3 class="section">2.1 Downloading and installing</h3>
<a name="index-installation"></a>
<a name="index-download"></a>
<p>GnuTLS is available for download at:
<a href="http://www.gnutls.org/download.html">http://www.gnutls.org/download.html</a>
</p>
<p>GnuTLS uses a development cycle where even minor version numbers
indicate a stable release and a odd minor version number indicate a
development release. For example, GnuTLS 1.6.3 denote a stable
release since 6 is even, and GnuTLS 1.7.11 denote a development
release since 7 is odd.
</p>
<p>GnuTLS depends on <code>nettle</code> and <code>gmplib</code>, and you will need to install it
before installing GnuTLS. The <code>nettle</code> library is available from
<a href="http://www.lysator.liu.se/~nisse/nettle/">http://www.lysator.liu.se/~nisse/nettle/</a>, while <code>gmplib</code> is available
from <a href="http://www.gmplib.org/">http://www.gmplib.org/</a>.
Don’t forget to verify the cryptographic signature after downloading
source code packages.
</p>
<p>The package is then extracted, configured and built like many other
packages that use Autoconf. For detailed information on configuring
and building it, refer to the <samp>INSTALL</samp> file that is part of the
distribution archive. Typically you invoke <code>./configure</code> and
then <code>make check install</code>. There are a number of compile-time
parameters, as discussed below.
</p>
<p>Several parts of GnuTLS require ASN.1 functionality, which is provided by
a library called libtasn1. A copy of libtasn1 is included in GnuTLS. If you
want to install it separately (e.g., to make it possibly to use
libtasn1 in other programs), you can get it from
<a href="http://www.gnu.org/software/libtasn1/">http://www.gnu.org/software/libtasn1/</a>.
</p>
<p>The compression library, <code>libz</code>, the PKCS #11 helper library <code>p11-kit</code>, as well
as the TPM library <code>trousers</code>, are
optional dependencies. You may get libz from <a href="http://www.zlib.net/">http://www.zlib.net/</a>,
p11-kit from <a href="http://p11-glue.freedesktop.org/">http://p11-glue.freedesktop.org/</a> and trousers from
<a href="http://trousers.sourceforge.net/">http://trousers.sourceforge.net/</a>.
</p>
<p>A few <code>configure</code> options may be relevant, summarized below.
They disable or enable particular features,
to create a smaller library with only the required features.
Note however, that although a smaller library is generated, the
included programs are not guarranteed to compile if some of these
options are given.
</p>
<pre class="verbatim">--disable-srp-authentication
--disable-psk-authentication
--disable-anon-authentication
--disable-dhe
--disable-ecdhe
--disable-rsa-export
--disable-extra-pki
--disable-openpgp-authentication
--disable-openssl-compatibility
--disable-libdane
--without-p11-kit
--with-tpm
--disable-dtls-srtp-support
</pre>
<p>For the complete list, refer to the output from <code>configure --help</code>.
</p>
<hr>
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Next: <a href="Document-overview.html#Document-overview" accesskey="n" rel="next">Document overview</a>, Up: <a href="Introduction-to-GnuTLS.html#Introduction-to-GnuTLS" accesskey="u" rel="up">Introduction to GnuTLS</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Function-and-Data-Index.html#Function-and-Data-Index" title="Index" rel="index">Index</a>]</p>
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