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<div class="section">
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="math_toolkit.building"></a><a class="link" href="building.html" title="If and How to Build a Boost.Math Library, and its Examples and Tests">If and How to Build a Boost.Math
    Library, and its Examples and Tests</a>
</h2></div></div></div>
<h5>
<a name="math_toolkit.building.h0"></a>
      <span class="phrase"><a name="math_toolkit.building.building_a_library_shared_dynami"></a></span><a class="link" href="building.html#math_toolkit.building.building_a_library_shared_dynami">Building a
      Library (shared, dynamic .dll or static .lib)</a>
    </h5>
<p>
      The first thing you need to ask yourself is "Do I need to build anything
      at all?" as the bulk of this library is header only: meaning you can use
      it just by #including the necessary header(s).
    </p>
<p>
      For most simple uses, including a header (or few) is best for compile time
      and program size.
    </p>
<p>
      Refer to <a class="link" href="../extern_c.html" title='Chapter&#160;9.&#160;TR1 and C99 external "C" Functions'>C99 and C++ TR1 C-style Functions</a>
      for pros and cons of using the TR1 components as opposed to the header only
      ones.
    </p>
<p>
      The <span class="emphasis"><em>only</em></span> time you <span class="emphasis"><em>need</em></span> to build the
      library is if you want to use the <code class="computeroutput"><span class="keyword">extern</span>
      <span class="string">"C"</span></code> functions declared in
      <code class="computeroutput"><span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">math</span><span class="special">/</span><span class="identifier">tr1</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>. To build this using Boost.Build, from
      a command-line boost-root directory issue a command like:
    </p>
<pre class="programlisting"><span class="identifier">bjam</span> <span class="identifier">toolset</span><span class="special">=</span><span class="identifier">gcc</span> <span class="special">--</span><span class="identifier">with</span><span class="special">-</span><span class="identifier">math</span> <span class="identifier">install</span>
</pre>
<p>
      that will do the job on Linux, while:
    </p>
<pre class="programlisting"><span class="identifier">bjam</span> <span class="identifier">toolset</span><span class="special">=</span><span class="identifier">msvc</span> <span class="special">--</span><span class="identifier">with</span><span class="special">-</span><span class="identifier">math</span> <span class="special">--</span><span class="identifier">build</span><span class="special">-</span><span class="identifier">type</span><span class="special">=</span><span class="identifier">complete</span> <span class="identifier">stage</span>
</pre>
<p>
      will work better on Windows (leaving libraries built in sub-folder <code class="computeroutput"><span class="special">/</span><span class="identifier">stage</span></code> below
      your Boost root directory). Either way you should consult the <a href="http://www.boost.org/doc/libs/release/more/getting_started/index.html" target="_top">getting
      started guide</a> for more information.
    </p>
<p>
      You can also build the libraries from your favourite IDE or command line tool:
      each <code class="computeroutput"><span class="keyword">extern</span> <span class="string">"C"</span></code>
      function declared in <code class="computeroutput"><span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">math</span><span class="special">/</span><span class="identifier">tr1</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code> has its own source file with the same name
      in <code class="computeroutput"><span class="identifier">libs</span><span class="special">/</span><span class="identifier">math</span><span class="special">/</span><span class="identifier">src</span><span class="special">/</span><span class="identifier">tr1</span></code>. Just
      select the sources corresponding to the functions you are using and build them
      into a library, or else add them directly to your project. Note that the directory
      <code class="computeroutput"><span class="identifier">libs</span><span class="special">/</span><span class="identifier">math</span><span class="special">/</span><span class="identifier">src</span><span class="special">/</span><span class="identifier">tr1</span></code> will
      need to be in your compiler's #include path as well as the boost-root directory
      (MSVC Tools, Options, Projects and Solutions, VC++ Directories, Include files).
    </p>
<div class="note"><table border="0" summary="Note">
<tr>
<td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../../doc/src/images/note.png"></td>
<th align="left">Note</th>
</tr>
<tr><td align="left" valign="top"><p>
        If you are using a Windows compiler that supports auto-linking and you have
        built the sources yourself (or added them directly to your project) then
        you will need to prevent <code class="computeroutput"><span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">math</span><span class="special">/</span><span class="identifier">tr1</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
        from trying to auto-link to the binaries that Boost.Build generates. You
        can do this by defining either BOOST_MATH_NO_LIB or BOOST_ALL_NO_LIB at project
        level (so the defines get passed to each compiler invocation).
      </p></td></tr>
</table></div>
<p>
      Optionally the sources in <code class="computeroutput"><span class="identifier">libs</span><span class="special">/</span><span class="identifier">math</span><span class="special">/</span><span class="identifier">src</span><span class="special">/</span><span class="identifier">tr1</span></code>
      have support for using <code class="computeroutput"><span class="identifier">libs</span><span class="special">/</span><span class="identifier">math</span><span class="special">/</span><span class="identifier">src</span><span class="special">/</span><span class="identifier">tr1</span><span class="special">/</span><span class="identifier">pch</span><span class="special">.</span><span class="identifier">hpp</span></code> as a precompiled header <span class="emphasis"><em>if
      your compiler supports precompiled headers.</em></span> Note that normally this
      header is a do-nothing <code class="computeroutput"><span class="preprocessor">#include</span></code>
      to activate the header so that it #includes everything required by all the
      sources you will need to define BOOST_BUILD_PCH_ENABLED on the command line,
      both when building the pre-compiled header and when building the sources. Boost.Build
      will do this automatically when appropriate.
    </p>
<h5>
<a name="math_toolkit.building.h1"></a>
      <span class="phrase"><a name="math_toolkit.building.building_the_examples"></a></span><a class="link" href="building.html#math_toolkit.building.building_the_examples">Building
      the Examples</a>
    </h5>
<p>
      The examples are all located in <code class="computeroutput"><span class="identifier">libs</span><span class="special">/</span><span class="identifier">math</span><span class="special">/</span><span class="identifier">example</span></code>, they can all be built without reference
      to any external libraries, either with Boost.Build using the supplied Jamfile,
      or from your compiler's command line. The only requirement is that the Boost
      headers are in your compilers #include search path.
    </p>
<h5>
<a name="math_toolkit.building.h2"></a>
      <span class="phrase"><a name="math_toolkit.building.building_the_tests"></a></span><a class="link" href="building.html#math_toolkit.building.building_the_tests">Building
      the Tests</a>
    </h5>
<p>
      The tests are located in <code class="computeroutput"><span class="identifier">libs</span><span class="special">/</span><span class="identifier">math</span><span class="special">/</span><span class="identifier">test</span></code> and are best built using Boost.Build
      and the supplied Jamfile. If you plan to build them separately from your favourite
      IDE then you will need to add <code class="computeroutput"><span class="identifier">libs</span><span class="special">/</span><span class="identifier">math</span><span class="special">/</span><span class="identifier">test</span></code> to the list of your compiler's search
      paths.
    </p>
<p>
      You will also need to build and link to the Boost.Regex library for many of
      the tests: this can built from the command line by following the <a href="http://www.boost.org/doc/libs/release/more/getting_started/index.html" target="_top">getting
      started guide</a>, using commands such as:
    </p>
<pre class="programlisting"><span class="identifier">bjam</span> <span class="identifier">toolset</span><span class="special">=</span><span class="identifier">gcc</span> <span class="special">--</span><span class="identifier">with</span><span class="special">-</span><span class="identifier">regex</span> <span class="identifier">install</span>
</pre>
<p>
      or bjam toolset=clang --with-regex install or bjam toolset=gcc,clang --with-regex
      install or bjam toolset=msvc --with-regex --build-type=complete stage
    </p>
<p>
      depending on whether you are on Linux or Windows.
    </p>
<p>
      Many of the tests have optional precompiled header support using the header
      <code class="computeroutput"><span class="identifier">libs</span><span class="special">/</span><span class="identifier">math</span><span class="special">/</span><span class="identifier">test</span><span class="special">/</span><span class="identifier">pch</span><span class="special">.</span><span class="identifier">hpp</span></code>. Note that normally this header is a
      do-nothing include: to activate the header so that it <code class="computeroutput"><span class="preprocessor">#include</span></code>s
      everything required by all the sources you will need to define BOOST_BUILD_PCH_ENABLED
      on the command line, both when building the pre-compiled header and when building
      the sources. Boost.Build will do this automatically when appropriate.
    </p>
</div>
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<td align="right"><div class="copyright-footer">Copyright &#169; 2006-2019 Nikhar
      Agrawal, Anton Bikineev, Paul A. Bristow, Marco Guazzone, Christopher Kormanyos,
      Hubert Holin, Bruno Lalande, John Maddock, Jeremy Murphy, Matthew Pulver, Johan
      R&#229;de, Gautam Sewani, Benjamin Sobotta, Nicholas Thompson, Thijs van den Berg,
      Daryle Walker and Xiaogang Zhang<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        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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