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116 lines
7.1 KiB
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<title>Building and Installing the Library</title>
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<link rel="home" href="../index.html" title="Boost.Regex 7.0.1">
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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
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<table cellpadding="2" width="100%"><tr>
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<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../boost.png"></td>
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<td align="center"><a href="../../../../../index.html">Home</a></td>
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<td align="center"><a href="../../../../../libs/libraries.htm">Libraries</a></td>
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<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td>
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<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td>
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<td align="center"><a href="../../../../../more/index.htm">More</a></td>
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<hr>
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<a accesskey="p" href="configuration/tuning.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../index.html"><img src="../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../index.html"><img src="../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="intro.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a>
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</div>
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<div class="section">
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<div class="titlepage"><div><div><h2 class="title" style="clear: both">
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<a name="boost_regex.install"></a><a class="link" href="install.html" title="Building and Installing the Library">Building and Installing the Library</a>
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</h2></div></div></div>
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<p>
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When you extract the library from its zip file, you must preserve its internal
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directory structure (for example by using the -d option when extracting). If
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you didn't do that when extracting, then you'd better stop reading this, delete
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the files you just extracted, and try again!
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</p>
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<p>
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This library should not need configuring before use; most popular compilers/standard
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libraries/platforms are already supported "as is". If you do experience
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configuration problems, or just want to test the configuration with your compiler,
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then the process is the same as for all of boost; see the <a href="../../../../config/index.html" target="_top">configuration
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library documentation</a>.
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</p>
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<p>
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The library will encase all code inside namespace boost.
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</p>
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<p>
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This is a header only library and all support for C++03 compilers has now been
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removed.
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</p>
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<p>
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The only people that still need to build the external libboost_regex library
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are those that are using the deprecated POSIX C API's
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</p>
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<p>
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Further, this library may now be used in "standalone" mode without
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the rest of the Boost C++ libraries, in order to do this you must either:
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</p>
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<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
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<li class="listitem">
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Have a C++17 compiler that supports <code class="computeroutput"><span class="identifier">__has_include</span></code>,
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in this case if <code class="computeroutput"><span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">config</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span></code> is not present then the library will
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automoatically enter standalone mode. Or:
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</li>
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<li class="listitem">
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Define BOOST_REGEX_STANDALONE when building.
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</li>
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</ul></div>
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<p>
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If you are using this library with ICU, note that since it is now header only,
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it will be up to you to link to the ICU libraries if you use <code class="computeroutput"><span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">regex</span><span class="special">/</span><span class="identifier">icu</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span></code> unless you are using the supplied CMake
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script.
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</p>
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<h5>
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<a name="boost_regex.install.h0"></a>
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<span class="phrase"><a name="boost_regex.install.usage_with_cmake"></a></span><a class="link" href="install.html#boost_regex.install.usage_with_cmake">Usage
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with CMake</a>
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</h5>
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<p>
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The library comes with a very basic CMakeLists.txt that allows this library
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to be used from other CMake scripts.
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</p>
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<p>
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CMakeLists.txt defines two targets:
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</p>
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<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
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<li class="listitem">
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<code class="computeroutput"><span class="identifier">Boost</span><span class="special">::</span><span class="identifier">regex</span></code> This is the target to use for normal
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header only builds.
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</li>
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<li class="listitem">
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<code class="computeroutput"><span class="identifier">Boost</span><span class="special">::</span><span class="identifier">regex_icu</span></code> This is the target to use if
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you are using <code class="computeroutput"><span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">regex</span><span class="special">/</span><span class="identifier">icu</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span></code> in your code, and wish to have the
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ICU dependencies taken care of for you.
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</li>
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</ul></div>
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<p>
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There is also one configuration option:
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</p>
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<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
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BOOST_REGEX_STANDALONE when set then no other Boost libraries are targeted
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as dependencies, and Boost.Regex is placed in standalone mode. Invoke CMake
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with -DBOOST_REGEX_STANDALONE=on to enable standalone mode.
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</li></ul></div>
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</div>
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<div class="copyright-footer">Copyright © 1998-2013 John Maddock<p>
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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</p>
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</div>
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<hr>
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<a accesskey="p" href="configuration/tuning.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../index.html"><img src="../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../index.html"><img src="../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="intro.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a>
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