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[SVN r37620]
This commit is contained in:
Dave Abrahams
2007-05-07 19:00:01 +00:00
parent 0739bb7df8
commit 13432b504f
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@@ -19,7 +19,5 @@ for local b in $(bases)
;
}
exe tst : tst.cpp ;
alias htmls : $(bases) ;
stage . : $(bases) ;

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@@ -9,55 +9,55 @@
</head>
<body>
<div class="document" id="logo-boost-python-build-and-test-howto">
<h1 class="title"><a class="reference" href="../index.htm"><img alt="Boost C++ Libraries:" class="boost-logo" src="../../../boost.png" /></a> Boost.Python Build and Test HOWTO</h1>
<h1 class="title"><a class="reference external" href="../index.htm"><img alt="Boost C++ Libraries:" class="boost-logo" src="../../../boost.png" /></a> Boost.Python Build and Test HOWTO</h1>
<!-- Copyright David Abrahams 2006. Distributed under the Boost -->
<!-- Software License, Version 1.0. (See accompanying -->
<!-- file LICENSE_1_0.txt or copy at -->
<!-- http://www.boost.org/LICENSE_1_0.txt) -->
<div class="contents sidebar small topic">
<p class="topic-title first"><a id="contents" name="contents">Contents</a></p>
<div class="contents sidebar small topic" id="contents">
<p class="topic-title first">Contents</p>
<ul class="auto-toc simple">
<li><a class="reference" href="#requirements" id="id24" name="id24">1&nbsp;&nbsp;&nbsp;Requirements</a></li>
<li><a class="reference" href="#background" id="id25" name="id25">2&nbsp;&nbsp;&nbsp;Background</a></li>
<li><a class="reference" href="#no-install-quickstart" id="id26" name="id26">3&nbsp;&nbsp;&nbsp;No-Install Quickstart</a><ul class="auto-toc">
<li><a class="reference" href="#basic-procedure" id="id27" name="id27">3.1&nbsp;&nbsp;&nbsp;Basic Procedure</a></li>
<li><a class="reference" href="#in-case-of-trouble" id="id28" name="id28">3.2&nbsp;&nbsp;&nbsp;In Case of Trouble</a></li>
<li><a class="reference" href="#in-case-everything-seemed-to-work" id="id29" name="id29">3.3&nbsp;&nbsp;&nbsp;In Case Everything Seemed to Work</a></li>
<li><a class="reference" href="#modifying-the-example-project" id="id30" name="id30">3.4&nbsp;&nbsp;&nbsp;Modifying the Example Project</a></li>
<li><a class="reference internal" href="#requirements" id="id25">1&nbsp;&nbsp;&nbsp;Requirements</a></li>
<li><a class="reference internal" href="#background" id="id26">2&nbsp;&nbsp;&nbsp;Background</a></li>
<li><a class="reference internal" href="#no-install-quickstart" id="id27">3&nbsp;&nbsp;&nbsp;No-Install Quickstart</a><ul class="auto-toc">
<li><a class="reference internal" href="#basic-procedure" id="id28">3.1&nbsp;&nbsp;&nbsp;Basic Procedure</a></li>
<li><a class="reference internal" href="#in-case-of-trouble" id="id29">3.2&nbsp;&nbsp;&nbsp;In Case of Trouble</a></li>
<li><a class="reference internal" href="#in-case-everything-seemed-to-work" id="id30">3.3&nbsp;&nbsp;&nbsp;In Case Everything Seemed to Work</a></li>
<li><a class="reference internal" href="#modifying-the-example-project" id="id31">3.4&nbsp;&nbsp;&nbsp;Modifying the Example Project</a></li>
</ul>
</li>
<li><a class="reference" href="#installing-boost-python-on-your-system" id="id31" name="id31">4&nbsp;&nbsp;&nbsp;Installing Boost.Python on your System</a></li>
<li><a class="reference" href="#configuring-boost-build" id="id32" name="id32">5&nbsp;&nbsp;&nbsp;Configuring Boost.Build</a><ul class="auto-toc">
<li><a class="reference" href="#python-configuration-parameters" id="id33" name="id33">5.1&nbsp;&nbsp;&nbsp;Python Configuration Parameters</a></li>
<li><a class="reference" href="#examples" id="id34" name="id34">5.2&nbsp;&nbsp;&nbsp;Examples</a></li>
<li><a class="reference internal" href="#installing-boost-python-on-your-system" id="id32">4&nbsp;&nbsp;&nbsp;Installing Boost.Python on your System</a></li>
<li><a class="reference internal" href="#configuring-boost-build" id="id33">5&nbsp;&nbsp;&nbsp;Configuring Boost.Build</a><ul class="auto-toc">
<li><a class="reference internal" href="#python-configuration-parameters" id="id34">5.1&nbsp;&nbsp;&nbsp;Python Configuration Parameters</a></li>
<li><a class="reference internal" href="#examples" id="id35">5.2&nbsp;&nbsp;&nbsp;Examples</a></li>
</ul>
</li>
<li><a class="reference" href="#choosing-a-boost-python-library-binary" id="id35" name="id35">6&nbsp;&nbsp;&nbsp;Choosing a Boost.Python Library Binary</a><ul class="auto-toc">
<li><a class="reference" href="#the-dynamic-binary" id="id36" name="id36">6.1&nbsp;&nbsp;&nbsp;The Dynamic Binary</a></li>
<li><a class="reference" href="#the-static-binary" id="id37" name="id37">6.2&nbsp;&nbsp;&nbsp;The Static Binary</a></li>
<li><a class="reference internal" href="#choosing-a-boost-python-library-binary" id="id36">6&nbsp;&nbsp;&nbsp;Choosing a Boost.Python Library Binary</a><ul class="auto-toc">
<li><a class="reference internal" href="#the-dynamic-binary" id="id37">6.1&nbsp;&nbsp;&nbsp;The Dynamic Binary</a></li>
<li><a class="reference internal" href="#the-static-binary" id="id38">6.2&nbsp;&nbsp;&nbsp;The Static Binary</a></li>
</ul>
</li>
<li><a class="reference" href="#include-issues" id="id38" name="id38">7&nbsp;&nbsp;&nbsp;<tt class="docutils literal"><span class="pre">#include</span></tt> Issues</a></li>
<li><a class="reference" href="#python-debugging-builds" id="id39" name="id39">8&nbsp;&nbsp;&nbsp;Python Debugging Builds</a></li>
<li><a class="reference" href="#testing-boost-python" id="id40" name="id40">9&nbsp;&nbsp;&nbsp;Testing Boost.Python</a></li>
<li><a class="reference" href="#notes-for-mingw-and-cygwin-with-mno-cygwin-gcc-users" id="id41" name="id41">10&nbsp;&nbsp;&nbsp;Notes for MinGW (and Cygwin with -mno-cygwin) GCC Users</a></li>
<li><a class="reference internal" href="#include-issues" id="id39">7&nbsp;&nbsp;&nbsp;<tt class="docutils literal"><span class="pre">#include</span></tt> Issues</a></li>
<li><a class="reference internal" href="#python-debugging-builds" id="id40">8&nbsp;&nbsp;&nbsp;Python Debugging Builds</a></li>
<li><a class="reference internal" href="#testing-boost-python" id="id41">9&nbsp;&nbsp;&nbsp;Testing Boost.Python</a></li>
<li><a class="reference internal" href="#notes-for-mingw-and-cygwin-with-mno-cygwin-gcc-users" id="id42">10&nbsp;&nbsp;&nbsp;Notes for MinGW (and Cygwin with -mno-cygwin) GCC Users</a></li>
</ul>
</div>
<div class="section">
<h1><a class="toc-backref" href="#id24" id="requirements" name="requirements">1&nbsp;&nbsp;&nbsp;Requirements</a></h1>
<p>Boost.Python requires <a class="reference" href="http://www.python.org/2.2">Python 2.2</a><a class="footnote-reference" href="#id21" id="id2" name="id2"><sup>1</sup></a> <em>or</em> <a class="reference" href="http://www.python.org"><em>newer</em></a>.</p>
<div class="section" id="requirements">
<h1><a class="toc-backref" href="#id25">1&nbsp;&nbsp;&nbsp;Requirements</a></h1>
<p>Boost.Python requires <a class="reference external" href="http://www.python.org/2.2">Python 2.2</a><a class="footnote-reference" href="#id22" id="id2"><sup>1</sup></a> <em>or</em> <a class="reference external" href="http://www.python.org"><em>newer</em></a>.</p>
</div>
<div class="section">
<h1><a class="toc-backref" href="#id25" id="background" name="background">2&nbsp;&nbsp;&nbsp;Background</a></h1>
<div class="section" id="background">
<h1><a class="toc-backref" href="#id26">2&nbsp;&nbsp;&nbsp;Background</a></h1>
<p>There are two basic models for combining C++ and Python:</p>
<ul class="simple">
<li><a class="reference" href="http://www.python.org/doc/current/ext/intro.html">extending</a>, in which the end-user launches the Python interpreter
<li><a class="reference external" href="http://www.python.org/doc/current/ext/intro.html">extending</a>, in which the end-user launches the Python interpreter
executable and imports Python “extension modules” written in C++.
Think of taking a library written in C++ and giving it a Python
interface so Python programmers can use it. From Python, these
modules look just like regular Python modules.</li>
<li><a class="reference" href="http://www.python.org/doc/current/ext/embedding.html">embedding</a>, in which the end-user launches a program written
<li><a class="reference external" href="http://www.python.org/doc/current/ext/embedding.html">embedding</a>, in which the end-user launches a program written
in C++ that in turn invokes the Python interpreter as a library
subroutine. Think of adding scriptability to an existing
application.</li>
@@ -65,7 +65,7 @@ application.</li>
<p>The key distinction between extending and embedding is the location
of the C++ <tt class="docutils literal"><span class="pre">main()</span></tt> function: in the Python interpreter executable,
or in some other program, respectively. Note that even when
embedding Python in another program, <a class="reference" href="http://www.python.org/doc/current/ext/extending-with-embedding.html">extension modules are often
embedding Python in another program, <a class="reference external" href="http://www.python.org/doc/current/ext/extending-with-embedding.html">extension modules are often
the best way to make C/C++ functionality accessible to Python
code</a>, so the use of extension modules is really at the heart of
both models.</p>
@@ -74,10 +74,10 @@ dynamically-loaded libraries with a single entry point, which means
you can change them without rebuilding either the other extension
modules or the executable containing <tt class="docutils literal"><span class="pre">main()</span></tt>.</p>
</div>
<div class="section">
<h1><a class="toc-backref" href="#id26" id="no-install-quickstart" name="no-install-quickstart">3&nbsp;&nbsp;&nbsp;No-Install Quickstart</a></h1>
<div class="section" id="no-install-quickstart">
<h1><a class="toc-backref" href="#id27">3&nbsp;&nbsp;&nbsp;No-Install Quickstart</a></h1>
<p>There is no need to “install Boost” in order to get started using
Boost.Python. These instructions use <a class="reference" href="../../../tools/build/index.html">Boost.Build</a> projects,
Boost.Python. These instructions use <a class="reference external" href="../../../tools/build/index.html">Boost.Build</a> projects,
which will build those binaries as soon as they're needed. Your
first tests may take a little longer while you wait for
Boost.Python to build, but doing things this way will save you from
@@ -105,20 +105,20 @@ you can see what your alternate build system needs to do.</p>
<!-- .. raw:: html
</div> -->
<div class="section">
<h2><a class="toc-backref" href="#id27" id="basic-procedure" name="basic-procedure">3.1&nbsp;&nbsp;&nbsp;Basic Procedure</a></h2>
<div class="section" id="basic-procedure">
<h2><a class="toc-backref" href="#id28">3.1&nbsp;&nbsp;&nbsp;Basic Procedure</a></h2>
<ol class="arabic">
<li><p class="first">Get Boost; see sections 1 and 2 [<a class="reference" href="../../../more/getting_started/unix-variants.html#get-boost">Unix/Linux</a>, <a class="reference" href="../../../more/getting_started/windows.html#get-boost">Windows</a>] of the
Boost <a class="reference" href="../../../more/getting_started/index.html">Getting Started Guide</a>.</p>
<li><p class="first">Get Boost; see sections 1 and 2 [<a class="reference external" href="../../../more/getting_started/unix-variants.html#get-boost">Unix/Linux</a>, <a class="reference external" href="../../../more/getting_started/windows.html#get-boost">Windows</a>] of the
Boost <a class="reference external" href="../../../more/getting_started/index.html">Getting Started Guide</a>.</p>
</li>
<li><p class="first">Get the <tt class="docutils literal"><span class="pre">bjam</span></tt> build driver. See section 5 [<a class="reference" href="../../../more/getting_started/unix-variants.html#prepare-to-use-a-boost-library-binary">Unix/Linux</a>,
<a class="reference" href="../../../more/getting_started/windows.html#prepare-to-use-a-boost-library-binary">Windows</a>] of the Boost <a class="reference" href="../../../more/getting_started/index.html">Getting Started Guide</a>.</p>
<li><p class="first">Get the <tt class="docutils literal"><span class="pre">bjam</span></tt> build driver. See section 5 [<a class="reference external" href="../../../more/getting_started/unix-variants.html#prepare-to-use-a-boost-library-binary">Unix/Linux</a>,
<a class="reference external" href="../../../more/getting_started/windows.html#prepare-to-use-a-boost-library-binary">Windows</a>] of the Boost <a class="reference external" href="../../../more/getting_started/index.html">Getting Started Guide</a>.</p>
</li>
<li><p class="first">cd into the <tt class="docutils literal"><span class="pre">libs/python/example/quickstart/</span></tt> directory of your
Boost installation, which contains a small example project.</p>
</li>
<li><p class="first">Invoke <tt class="docutils literal"><span class="pre">bjam</span></tt>. Replace the “<tt class="docutils literal"><span class="pre">stage</span></tt>“ argument from the
example invocation from section 5 of the <a class="reference" href="../../../more/getting_started/index.html">Getting Started
example invocation from section 5 of the <a class="reference external" href="../../../more/getting_started/index.html">Getting Started
Guide</a> with “<tt class="docutils literal"><span class="pre">test</span></tt>,“ to build all the test targets. Also add
the argument “<tt class="docutils literal"><span class="pre">--verbose-test</span></tt>” to see the output generated by
the tests when they are run.</p>
@@ -137,7 +137,7 @@ C:\boost_1_34_0\…\quickstart&gt; <strong>bjam toolset=msvc --verbose-test test
<p class="last">For the sake of concision, the rest of this guide will use
unix-style forward slashes in pathnames instead of the
backslashes with which you may be more familiar. The forward
slashes should work everywhere except in <a class="reference" href="../../../more/getting_started/windows.html#command-prompt">Command Prompt</a>
slashes should work everywhere except in <a class="reference external" href="../../../more/getting_started/windows.html#command-prompt">Command Prompt</a>
windows, where you should use backslashes.</p>
</div>
<p>If you followed this procedure successfully, you will have built an
@@ -146,55 +146,55 @@ Python script called <tt class="docutils literal"><span class="pre">test_extendi
built and run a simple application called <tt class="docutils literal"><span class="pre">embedding</span></tt> that embeds
python.</p>
</div>
<div class="section">
<h2><a class="toc-backref" href="#id28" id="in-case-of-trouble" name="in-case-of-trouble">3.2&nbsp;&nbsp;&nbsp;In Case of Trouble</a></h2>
<div class="section" id="in-case-of-trouble">
<h2><a class="toc-backref" href="#id29">3.2&nbsp;&nbsp;&nbsp;In Case of Trouble</a></h2>
<p>If you're seeing lots of compiler and/or linker error messages,
it's probably because Boost.Build is having trouble finding your
Python installation. You might want to pass the
<tt class="docutils literal"><span class="pre">--debug-configuration</span></tt> option to <tt class="docutils literal"><span class="pre">bjam</span></tt> the first few times
you invoke it, to make sure that Boost.Build is correctly locating
all the parts of your Python installation. If it isn't, consider
<a class="reference" href="#configuring-boost-build">Configuring Boost.Build</a> as detailed below.</p>
<a class="reference internal" href="#configuring-boost-build">Configuring Boost.Build</a> as detailed below.</p>
<p>If you're still having trouble, Someone on one of the following
mailing lists may be able to help:</p>
<ul class="simple">
<li>The <a class="reference" href="../../../more/mailing_lists.htm#jamboost">Boost.Build mailing list</a> for issues related to Boost.Build</li>
<li>The Python <a class="reference" href="../../../more/mailing_lists.htm#cplussig">C++ Sig</a> for issues specifically related to Boost.Python</li>
<li>The <a class="reference external" href="../../../more/mailing_lists.htm#jamboost">Boost.Build mailing list</a> for issues related to Boost.Build</li>
<li>The Python <a class="reference external" href="../../../more/mailing_lists.htm#cplussig">C++ Sig</a> for issues specifically related to Boost.Python</li>
</ul>
</div>
<div class="section">
<h2><a class="toc-backref" href="#id29" id="in-case-everything-seemed-to-work" name="in-case-everything-seemed-to-work">3.3&nbsp;&nbsp;&nbsp;In Case Everything Seemed to Work</a></h2>
<div class="section" id="in-case-everything-seemed-to-work">
<h2><a class="toc-backref" href="#id30">3.3&nbsp;&nbsp;&nbsp;In Case Everything Seemed to Work</a></h2>
<p>Rejoice! If you're new to Boost.Python, at this point it might be
a good idea to ignore build issues for a while and concentrate on
learning the library by going through the <a class="reference" href="tutorial/index.html">tutorial</a> and perhaps
some of the <a class="reference" href="v2/reference.html">reference documentation</a>, trying out what you've
learning the library by going through the <a class="reference external" href="tutorial/index.html">tutorial</a> and perhaps
some of the <a class="reference external" href="v2/reference.html">reference documentation</a>, trying out what you've
learned about the API by modifying the quickstart project.</p>
</div>
<div class="section">
<h2><a class="toc-backref" href="#id30" id="modifying-the-example-project" name="modifying-the-example-project">3.4&nbsp;&nbsp;&nbsp;Modifying the Example Project</a></h2>
<div class="section" id="modifying-the-example-project">
<h2><a class="toc-backref" href="#id31">3.4&nbsp;&nbsp;&nbsp;Modifying the Example Project</a></h2>
<p>If you're content to keep your extension module forever in one
source file called <a class="reference" href="../example/quickstart/extending.cpp"><tt class="docutils literal"><span class="pre">extending.cpp</span></tt></a>, inside your Boost
source file called <a class="reference external" href="../example/quickstart/extending.cpp"><tt class="docutils literal"><span class="pre">extending.cpp</span></tt></a>, inside your Boost
distribution, and import it forever as <tt class="docutils literal"><span class="pre">extending</span></tt>, then you can
stop here. However, it's likely that you will want to make a few
changes. There are a few things you can do without having to learn
<a class="reference" href="../../../tools/build/index.html">Boost.Build</a> in depth.</p>
<a class="reference external" href="../../../tools/build/index.html">Boost.Build</a> in depth.</p>
<p>The project you just built is specified in two files in the current
directory: <a class="reference" href="../example/quickstart/boost-build.jam"><tt class="docutils literal"><span class="pre">boost-build.jam</span></tt></a>, which tells <tt class="docutils literal"><span class="pre">bjam</span></tt> where it can
directory: <a class="reference external" href="../example/quickstart/boost-build.jam"><tt class="docutils literal"><span class="pre">boost-build.jam</span></tt></a>, which tells <tt class="docutils literal"><span class="pre">bjam</span></tt> where it can
find the interpreted code of the Boost build system, and
<a class="reference" href="../example/quickstart/Jamroot"><tt class="docutils literal"><span class="pre">Jamroot</span></tt></a>, which describes the targets you just built. These
<a class="reference external" href="../example/quickstart/Jamroot"><tt class="docutils literal"><span class="pre">Jamroot</span></tt></a>, which describes the targets you just built. These
files are heavily commented, so they should be easy to modify.
Take care, however, to preserve whitespace. Punctuation such as
<tt class="docutils literal"><span class="pre">;</span></tt> will not be recognized as intended by <tt class="docutils literal"><span class="pre">bjam</span></tt> if it is not
surrounded by whitespace.</p>
<div class="section">
<h3><a id="relocate-the-project" name="relocate-the-project">Relocate the Project</a></h3>
<div class="section" id="relocate-the-project">
<h3>Relocate the Project</h3>
<p>You'll probably want to copy this project elsewhere so you can
change it without modifying your Boost distribution. To do that,
simply</p>
<ol class="loweralpha simple">
<li>copy the entire <tt class="docutils literal"><span class="pre">libs/python/example/quickstart/</span></tt> directory
into a new directory.</li>
<li>In the new copies of <a class="reference" href="../example/quickstart/boost-build.jam"><tt class="docutils literal"><span class="pre">boost-build.jam</span></tt></a> and <a class="reference" href="../example/quickstart/Jamroot"><tt class="docutils literal"><span class="pre">Jamroot</span></tt></a>, locate
<li>In the new copies of <a class="reference external" href="../example/quickstart/boost-build.jam"><tt class="docutils literal"><span class="pre">boost-build.jam</span></tt></a> and <a class="reference external" href="../example/quickstart/Jamroot"><tt class="docutils literal"><span class="pre">Jamroot</span></tt></a>, locate
the relative path near the top of the file that is clearly
marked by a comment, and edit that path so that it refers to the
same directory your Boost distribution as it referred to when
@@ -204,7 +204,7 @@ the file was in its original location in the
<p>For example, if you moved the project from
<tt class="docutils literal"><span class="pre">/home/dave/boost_1_34_0/libs/python/example/quickstart</span></tt> to
<tt class="docutils literal"><span class="pre">/home/dave/my-project</span></tt>, you could change the first path in
<a class="reference" href="../example/quickstart/boost-build.jam"><tt class="docutils literal"><span class="pre">boost-build.jam</span></tt></a> from</p>
<a class="reference external" href="../example/quickstart/boost-build.jam"><tt class="docutils literal"><span class="pre">boost-build.jam</span></tt></a> from</p>
<pre class="literal-block">
<strong>../../../..</strong>/tools/build/v2
</pre>
@@ -212,7 +212,7 @@ the file was in its original location in the
<pre class="literal-block">
<strong>/home/dave/boost_1_34_0</strong>/tools/build/v2
</pre>
<p>and change the first path in <a class="reference" href="../example/quickstart/Jamroot"><tt class="docutils literal"><span class="pre">Jamroot</span></tt></a> from</p>
<p>and change the first path in <a class="reference external" href="../example/quickstart/Jamroot"><tt class="docutils literal"><span class="pre">Jamroot</span></tt></a> from</p>
<pre class="literal-block">
<strong>../../../..</strong>
</pre>
@@ -221,28 +221,28 @@ the file was in its original location in the
<strong>/home/dave/boost_1_34_0</strong>
</pre>
</div>
<div class="section">
<h3><a id="add-new-or-change-names-of-existing-source-files" name="add-new-or-change-names-of-existing-source-files">Add New or Change Names of Existing Source Files</a></h3>
<div class="section" id="add-new-or-change-names-of-existing-source-files">
<h3>Add New or Change Names of Existing Source Files</h3>
<p>The names of additional source files involved in building your
extension module or embedding application can be listed in
<a class="reference" href="../example/quickstart/Jamroot"><tt class="docutils literal"><span class="pre">Jamroot</span></tt></a> right alongside <tt class="docutils literal"><span class="pre">extending.cpp</span></tt> or <tt class="docutils literal"><span class="pre">embedding.cpp</span></tt>
<a class="reference external" href="../example/quickstart/Jamroot"><tt class="docutils literal"><span class="pre">Jamroot</span></tt></a> right alongside <tt class="docutils literal"><span class="pre">extending.cpp</span></tt> or <tt class="docutils literal"><span class="pre">embedding.cpp</span></tt>
respectively. Just be sure to leave whitespace around each
filename:</p>
<pre class="literal-block">
… file1.cpp file2.cpp file3.cpp …
</pre>
<p>Naturally, if you want to change the name of a source file you can
tell Boost.Build about it by editing the name in <a class="reference" href="../example/quickstart/Jamroot"><tt class="docutils literal"><span class="pre">Jamroot</span></tt></a>.</p>
tell Boost.Build about it by editing the name in <a class="reference external" href="../example/quickstart/Jamroot"><tt class="docutils literal"><span class="pre">Jamroot</span></tt></a>.</p>
</div>
<div class="section">
<h3><a id="change-the-name-of-your-extension-module" name="change-the-name-of-your-extension-module">Change the Name of your Extension Module</a></h3>
<div class="section" id="change-the-name-of-your-extension-module">
<h3>Change the Name of your Extension Module</h3>
<p>The name of the extension module is determined by two things:</p>
<ol class="arabic simple">
<li>the name in <a class="reference" href="../example/quickstart/Jamroot"><tt class="docutils literal"><span class="pre">Jamroot</span></tt></a> immediately following <tt class="docutils literal"><span class="pre">python-extension</span></tt>, and</li>
<li>the name passed to <tt class="docutils literal"><span class="pre">BOOST_PYTHON_MODULE</span></tt> in <a class="reference" href="../example/quickstart/extending.cpp"><tt class="docutils literal"><span class="pre">extending.cpp</span></tt></a>.</li>
<li>the name in <a class="reference external" href="../example/quickstart/Jamroot"><tt class="docutils literal"><span class="pre">Jamroot</span></tt></a> immediately following <tt class="docutils literal"><span class="pre">python-extension</span></tt>, and</li>
<li>the name passed to <tt class="docutils literal"><span class="pre">BOOST_PYTHON_MODULE</span></tt> in <a class="reference external" href="../example/quickstart/extending.cpp"><tt class="docutils literal"><span class="pre">extending.cpp</span></tt></a>.</li>
</ol>
<p>To change the name of the extension module from <tt class="docutils literal"><span class="pre">extending</span></tt> to
<tt class="docutils literal"><span class="pre">hello</span></tt>, you'd edit <a class="reference" href="../example/quickstart/Jamroot"><tt class="docutils literal"><span class="pre">Jamroot</span></tt></a>, changing</p>
<tt class="docutils literal"><span class="pre">hello</span></tt>, you'd edit <a class="reference external" href="../example/quickstart/Jamroot"><tt class="docutils literal"><span class="pre">Jamroot</span></tt></a>, changing</p>
<pre class="literal-block">
python-extension <strong>extending</strong> : extending.cpp ;
</pre>
@@ -261,13 +261,13 @@ BOOST_PYTHON_MODULE(<strong>hello</strong>)
</div>
</div>
</div>
<div class="section">
<h1><a class="toc-backref" href="#id31" id="installing-boost-python-on-your-system" name="installing-boost-python-on-your-system">4&nbsp;&nbsp;&nbsp;Installing Boost.Python on your System</a></h1>
<div class="section" id="installing-boost-python-on-your-system">
<h1><a class="toc-backref" href="#id32">4&nbsp;&nbsp;&nbsp;Installing Boost.Python on your System</a></h1>
<p>Since Boost.Python is a separately-compiled (as opposed to
<a class="reference" href="../../../more/getting_started/windows.html#header-only-libraries">header-only</a>) library, its user relies on the services of a
<a class="reference external" href="../../../more/getting_started/windows.html#header-only-libraries">header-only</a>) library, its user relies on the services of a
Boost.Python library binary.</p>
<p>If you need a regular installation of the Boost.Python library
binaries on your system, the Boost <a class="reference" href="../../../more/getting_started/index.html">Getting Started Guide</a> will
binaries on your system, the Boost <a class="reference external" href="../../../more/getting_started/index.html">Getting Started Guide</a> will
walk you through the steps of creating one. If building binaries
from source, you might want to supply the <tt class="docutils literal"><span class="pre">--with-python</span></tt>
argument to <tt class="docutils literal"><span class="pre">bjam</span></tt> (or the <tt class="docutils literal"><span class="pre">--with-libraries=python</span></tt> argument
@@ -275,17 +275,17 @@ to <tt class="docutils literal"><span class="pre">configure</span></tt>), so onl
rather than all the Boost binaries.</p>
<div class="admonition-windows-users-no-auto-link-support admonition">
<p class="first admonition-title">Windows Users: No Auto-Link Support</p>
<p class="last">Boost.Python does not yet support the <a class="reference" href="../../../more/getting_started/windows.html#link-your-program-to-a-boost-library">auto-link</a> feature, so if
you're not using the <a class="reference" href="#no-install-quickstart">quickstart</a> method, you'll have to pay
<p class="last">Boost.Python does not yet support the <a class="reference external" href="../../../more/getting_started/windows.html#link-your-program-to-a-boost-library">auto-link</a> feature, so if
you're not using the <a class="reference internal" href="#no-install-quickstart">quickstart</a> method, you'll have to pay
attention to the names of generated libraries and add extra link
arguments not shown in the <a class="reference" href="../../../more/getting_started/index.html">Getting Started Guide</a> to select the
arguments not shown in the <a class="reference external" href="../../../more/getting_started/index.html">Getting Started Guide</a> to select the
right library.</p>
</div>
</div>
<div class="section">
<h1><a class="toc-backref" href="#id32" id="configuring-boost-build" name="configuring-boost-build">5&nbsp;&nbsp;&nbsp;Configuring Boost.Build</a></h1>
<p>As described in the <a class="reference" href="http://www.boost.orgdoc/html/bbv2/advanced.html#bbv2.advanced.configuration">Boost.Build reference manual</a>, a file called
<tt class="docutils literal"><span class="pre">user-config.jam</span></tt> in your home directory<a class="footnote-reference" href="#home-dir" id="id11" name="id11"><sup>6</sup></a> is used to
<div class="section" id="configuring-boost-build">
<h1><a class="toc-backref" href="#id33">5&nbsp;&nbsp;&nbsp;Configuring Boost.Build</a></h1>
<p>As described in the <a class="reference external" href="http://www.boost.orgdoc/html/bbv2/advanced.html#bbv2.advanced.configuration">Boost.Build reference manual</a>, a file called
<tt class="docutils literal"><span class="pre">user-config.jam</span></tt> in your home directory<a class="footnote-reference" href="#home-dir" id="id11"><sup>6</sup></a> is used to
specify the tools and libraries available to the build system. You
may need to create or edit <tt class="docutils literal"><span class="pre">user-config.jam</span></tt> to tell Boost.Build
how to invoke Python, <tt class="docutils literal"><span class="pre">#include</span></tt> its headers, and link with its
@@ -294,7 +294,7 @@ libraries.</p>
<p class="first admonition-title">Users of Unix-Variant OSes</p>
<p class="last">If you are using a unix-variant OS and you ran Boost's
<tt class="docutils literal"><span class="pre">configure</span></tt> script, it may have generated a
<tt class="docutils literal"><span class="pre">user-config.jam</span></tt> for you.<a class="footnote-reference" href="#overwrite" id="id13" name="id13"><sup>4</sup></a> If your <tt class="docutils literal"><span class="pre">configure</span></tt>/<tt class="docutils literal"><span class="pre">make</span></tt> sequence was successful and Boost.Python binaries
<tt class="docutils literal"><span class="pre">user-config.jam</span></tt> for you.<a class="footnote-reference" href="#overwrite" id="id13"><sup>4</sup></a> If your <tt class="docutils literal"><span class="pre">configure</span></tt>/<tt class="docutils literal"><span class="pre">make</span></tt> sequence was successful and Boost.Python binaries
were built, your <tt class="docutils literal"><span class="pre">user-config.jam</span></tt> file is probably already
correct.</p>
</div>
@@ -309,12 +309,12 @@ using python ;
</pre>
<p>which automatically looks for Python in the most likely places.
However, that only happens when using the Boost.Python project file
(e.g. when referred to by another project as in the <a class="reference" href="#no-install-quickstart">quickstart</a>
(e.g. when referred to by another project as in the <a class="reference internal" href="#no-install-quickstart">quickstart</a>
method). If instead you are linking against separately-compiled
Boost.Python binaries, you should set up a <tt class="docutils literal"><span class="pre">user-config.jam</span></tt> file
with at least the minimal incantation above.</p>
<div class="section">
<h2><a class="toc-backref" href="#id33" id="python-configuration-parameters" name="python-configuration-parameters">5.1&nbsp;&nbsp;&nbsp;Python Configuration Parameters</a></h2>
<div class="section" id="python-configuration-parameters">
<h2><a class="toc-backref" href="#id34">5.1&nbsp;&nbsp;&nbsp;Python Configuration Parameters</a></h2>
<p>If you have several versions of Python installed, or Python is
installed in an unusual way, you may want to supply any or all of
the following optional parameters to <tt class="docutils literal"><span class="pre">using</span> <span class="pre">python</span></tt>.</p>
@@ -350,13 +350,13 @@ modules before the true filename extension. You almost certainly
don't need to use this. Usually this suffix is only used when
targeting a Windows debug build of Python, and will be set
automatically for you based on the value of the
<a class="reference" href="#python-debugging"><tt class="docutils literal"><span class="pre">&lt;python-debugging&gt;</span></tt></a> feature. However, at least one Linux
<a class="reference internal" href="#python-debugging"><tt class="docutils literal"><span class="pre">&lt;python-debugging&gt;</span></tt></a> feature. However, at least one Linux
distribution (Ubuntu Feisty Fawn) has a specially configured
<a class="reference" href="https://wiki.ubuntu.com/PyDbgBuilds">python-dbg</a> package that claims to use such a suffix.</dd>
<a class="reference external" href="https://wiki.ubuntu.com/PyDbgBuilds">python-dbg</a> package that claims to use such a suffix.</dd>
</dl>
</div>
<div class="section">
<h2><a class="toc-backref" href="#id34" id="examples" name="examples">5.2&nbsp;&nbsp;&nbsp;Examples</a></h2>
<div class="section" id="examples">
<h2><a class="toc-backref" href="#id35">5.2&nbsp;&nbsp;&nbsp;Examples</a></h2>
<p>Note that in the examples below, case and <em>especially whitespace</em> are
significant.</p>
<ul>
@@ -395,7 +395,7 @@ using python
</pre>
</li>
<li><p class="first">If you have downloaded the Python sources and built both the
normal and the “<a class="reference" href="#id19">python debugging</a>” builds from source on
normal and the “<a class="reference internal" href="#id19">python debugging</a>” builds from source on
Windows, you might see:</p>
<pre class="literal-block">
using python : 2.5 : C:\\src\\Python-2.5\\PCBuild\\python ;
@@ -406,7 +406,7 @@ using python : 2.5 : C:\\src\\Python-2.5\\PCBuild\\python_d
</pre>
</li>
<li><p class="first">You can set up your user-config.jam so a bjam built under Windows
can build/test both Windows and <a class="reference" href="http://cygwin.com">Cygwin</a> python extensions. Just pass
can build/test both Windows and <a class="reference external" href="http://cygwin.com">Cygwin</a> python extensions. Just pass
<tt class="docutils literal"><span class="pre">&lt;target-os&gt;cygwin</span></tt> in the <tt class="docutils literal"><span class="pre">condition</span></tt> parameter
for the cygwin python installation:</p>
<pre class="literal-block">
@@ -417,16 +417,16 @@ using python ;
using python : : c:\\cygwin\\bin\\python2.5 : : : &lt;target-os&gt;cygwin ;
</pre>
<p>when you put target-os=cygwin in your build request, it should build
with the cygwin version of python:<a class="footnote-reference" href="#flavor" id="id15" name="id15"><sup>5</sup></a></p>
with the cygwin version of python:<a class="footnote-reference" href="#flavor" id="id15"><sup>5</sup></a></p>
<blockquote>
<p>bjam target-os=cygwin toolset=gcc</p>
</blockquote>
<p>This is supposed to work the other way, too (targeting windows
python with a <a class="reference" href="http://cygwin.com">Cygwin</a> bjam) but it seems as though the support in
python with a <a class="reference external" href="http://cygwin.com">Cygwin</a> bjam) but it seems as though the support in
Boost.Build's toolsets for building that way is broken at the
time of this writing.</p>
</li>
<li><p class="first">Note that because of <a class="reference" href="http://zigzag.cs.msu.su/boost.build/wiki/AlternativeSelection">the way Boost.Build currently selects target
<li><p class="first">Note that because of <a class="reference external" href="http://zigzag.cs.msu.su/boost.build/wiki/AlternativeSelection">the way Boost.Build currently selects target
alternatives</a>, you might have be very explicit in your build
requests. For example, given:</p>
<pre class="literal-block">
@@ -445,35 +445,35 @@ bjam target-os=cygwin/python=2.4
</ul>
</div>
</div>
<div class="section">
<h1><a class="toc-backref" href="#id35" id="choosing-a-boost-python-library-binary" name="choosing-a-boost-python-library-binary">6&nbsp;&nbsp;&nbsp;Choosing a Boost.Python Library Binary</a></h1>
<div class="section" id="choosing-a-boost-python-library-binary">
<h1><a class="toc-backref" href="#id36">6&nbsp;&nbsp;&nbsp;Choosing a Boost.Python Library Binary</a></h1>
<p>If—instead of letting Boost.Build construct and link with the right
libraries automatically—you choose to use a pre-built Boost.Python
library, you'll need to think about which one to link with. The
Boost.Python binary comes in both static and dynamic flavors. Take
care to choose the right flavor for your application.<a class="footnote-reference" href="#naming" id="id17" name="id17"><sup>2</sup></a></p>
<div class="section">
<h2><a class="toc-backref" href="#id36" id="the-dynamic-binary" name="the-dynamic-binary">6.1&nbsp;&nbsp;&nbsp;The Dynamic Binary</a></h2>
care to choose the right flavor for your application.<a class="footnote-reference" href="#naming" id="id17"><sup>2</sup></a></p>
<div class="section" id="the-dynamic-binary">
<h2><a class="toc-backref" href="#id37">6.1&nbsp;&nbsp;&nbsp;The Dynamic Binary</a></h2>
<p>The dynamic library is the safest and most-versatile choice:</p>
<ul class="simple">
<li>A single copy of the library code is used by all extension
modules built with a given toolset.<a class="footnote-reference" href="#toolset-specific" id="id18" name="id18"><sup>3</sup></a></li>
modules built with a given toolset.<a class="footnote-reference" href="#toolset-specific" id="id18"><sup>3</sup></a></li>
<li>The library contains a type conversion registry. Because one
registry is shared among all extension modules, instances of a
class exposed to Python in one dynamically-loaded extension
module can be passed to functions exposed in another such module.</li>
</ul>
</div>
<div class="section">
<h2><a class="toc-backref" href="#id37" id="the-static-binary" name="the-static-binary">6.2&nbsp;&nbsp;&nbsp;The Static Binary</a></h2>
<div class="section" id="the-static-binary">
<h2><a class="toc-backref" href="#id38">6.2&nbsp;&nbsp;&nbsp;The Static Binary</a></h2>
<p>It might be appropriate to use the static Boost.Python library in
any of the following cases:</p>
<ul class="simple">
<li>You are <a class="reference" href="http://www.python.org/doc/current/ext/intro.html">extending</a> python and the types exposed in your
<li>You are <a class="reference external" href="http://www.python.org/doc/current/ext/intro.html">extending</a> python and the types exposed in your
dynamically-loaded extension module don't need to be used by any
other Boost.Python extension modules, and you don't care if the
core library code is duplicated among them.</li>
<li>You are <a class="reference" href="http://www.python.org/doc/current/ext/embedding.html">embedding</a> python in your application and either:<ul>
<li>You are <a class="reference external" href="http://www.python.org/doc/current/ext/embedding.html">embedding</a> python in your application and either:<ul>
<li>You are targeting a Unix variant OS other than MacOS or AIX,
where the dynamically-loaded extension modules can “see” the
Boost.Python library symbols that are part of the executable.</li>
@@ -487,8 +487,8 @@ modules (and vice-versa).</li>
</ul>
</div>
</div>
<div class="section">
<h1><a class="toc-backref" href="#id38" id="include-issues" name="include-issues">7&nbsp;&nbsp;&nbsp;<tt class="docutils literal"><span class="pre">#include</span></tt> Issues</a></h1>
<div class="section" id="include-issues">
<h1><a class="toc-backref" href="#id39">7&nbsp;&nbsp;&nbsp;<tt class="docutils literal"><span class="pre">#include</span></tt> Issues</a></h1>
<ol class="arabic simple">
<li>If you should ever have occasion to <tt class="docutils literal"><span class="pre">#include</span> <span class="pre">&quot;python.h&quot;</span></tt>
directly in a translation unit of a program using Boost.Python,
@@ -499,11 +499,11 @@ one of which is mentioned in the next section.</li>
<tt class="docutils literal"><span class="pre">wrap_python.hpp</span></tt>. This restriction is actually imposed by
Python, or more properly, by Python's interaction with your
operating system. See
<a class="reference" href="http://docs.python.org/ext/simpleExample.html">http://docs.python.org/ext/simpleExample.html</a> for details.</li>
<a class="reference external" href="http://docs.python.org/ext/simpleExample.html">http://docs.python.org/ext/simpleExample.html</a> for details.</li>
</ol>
</div>
<div class="section">
<h1><a class="toc-backref" href="#id39" id="python-debugging-builds" name="python-debugging-builds"><span id="id19"></span><span id="python-debugging"></span>8&nbsp;&nbsp;&nbsp;Python Debugging Builds</a></h1>
<div class="section" id="python-debugging-builds">
<span id="id19"></span><span id="python-debugging"></span><h1><a class="toc-backref" href="#id40">8&nbsp;&nbsp;&nbsp;Python Debugging Builds</a></h1>
<p>Python can be built in a special “python debugging” configuration
that adds extra checks and instrumentation that can be very useful
for developers of extension modules. The data structures used by
@@ -513,7 +513,7 @@ used with an extension module or library compiled without it, and
vice-versa.</strong></p>
<p>Since pre-built “python debugging” versions of the Python
executable and libraries are not supplied with most distributions
of Python, [#get-debug-build] and we didn't want to force our users
of Python,<a class="footnote-reference" href="#get-debug-build" id="id20"><sup>7</sup></a> and we didn't want to force our users
to build them, Boost.Build does not automatically enable python
debugging in its <tt class="docutils literal"><span class="pre">debug</span></tt> build variant (which is the default).
Instead there is a special build property called
@@ -533,27 +533,27 @@ is #included from <tt class="docutils literal"><span class="pre">boost/python/de
sure <tt class="docutils literal"><span class="pre">BOOST_DEBUG_PYTHON</span></tt> is defined, or python debugging will be
suppressed.</p>
</div>
<div class="section">
<h1><a class="toc-backref" href="#id40" id="testing-boost-python" name="testing-boost-python">9&nbsp;&nbsp;&nbsp;Testing Boost.Python</a></h1>
<div class="section" id="testing-boost-python">
<h1><a class="toc-backref" href="#id41">9&nbsp;&nbsp;&nbsp;Testing Boost.Python</a></h1>
<p>To run the full test suite for Boost.Python, invoke <tt class="docutils literal"><span class="pre">bjam</span></tt> in the
<tt class="docutils literal"><span class="pre">libs/python/test</span></tt> subdirectory of your Boost distribution.</p>
</div>
<div class="section">
<h1><a class="toc-backref" href="#id41" id="notes-for-mingw-and-cygwin-with-mno-cygwin-gcc-users" name="notes-for-mingw-and-cygwin-with-mno-cygwin-gcc-users">10&nbsp;&nbsp;&nbsp;Notes for MinGW (and Cygwin with -mno-cygwin) GCC Users</a></h1>
<div class="section" id="notes-for-mingw-and-cygwin-with-mno-cygwin-gcc-users">
<h1><a class="toc-backref" href="#id42">10&nbsp;&nbsp;&nbsp;Notes for MinGW (and Cygwin with -mno-cygwin) GCC Users</a></h1>
<p>If you are using a version of Python prior to 2.4.1 with a MinGW
prior to 3.0.0 (with binutils-2.13.90-20030111-1), you will need to
create a MinGW-compatible version of the Python library; the one
shipped with Python will only work with a Microsoft-compatible
linker. Follow the instructions in the “Non-Microsoft” section of
the “Building Extensions: Tips And Tricks” chapter in <a class="reference" href="http://www.python.org/doc/current/inst/index.html">Installing
the “Building Extensions: Tips And Tricks” chapter in <a class="reference external" href="http://www.python.org/doc/current/inst/index.html">Installing
Python Modules</a> to create <tt class="docutils literal"><span class="pre">libpythonXX.a</span></tt>, where <tt class="docutils literal"><span class="pre">XX</span></tt>
corresponds to the major and minor version numbers of your Python
installation.</p>
<hr class="docutils" />
<table class="docutils footnote" frame="void" id="id21" rules="none">
<table class="docutils footnote" frame="void" id="id22" rules="none">
<colgroup><col class="label" /><col /></colgroup>
<tbody valign="top">
<tr><td class="label"><a class="fn-backref" href="#id2" name="id21">[1]</a></td><td>Note that although we tested earlier versions of
<tr><td class="label"><a class="fn-backref" href="#id2">[1]</a></td><td>Note that although we tested earlier versions of
Boost.Python with Python 2.2, and we don't <em>think</em> we've done
anything to break compatibility, this release of Boost.Python
may not have been tested with versions of Python earlier than
@@ -564,11 +564,11 @@ supported.</td></tr>
<table class="docutils footnote" frame="void" id="naming" rules="none">
<colgroup><col class="label" /><col /></colgroup>
<tbody valign="top">
<tr><td class="label"><a class="fn-backref" href="#id17" name="naming">[2]</a></td><td><p class="first">Information about how to identify the
<tr><td class="label"><a class="fn-backref" href="#id17">[2]</a></td><td><p class="first">Information about how to identify the
static and dynamic builds of Boost.Python:</p>
<ul class="simple">
<li><a class="reference" href="../../../more/getting_started/windows.html#library-naming">on Windows</a></li>
<li><a class="reference" href="../../../more/getting_started/unix-variants.html#library-naming">on Unix variants</a></li>
<li><a class="reference external" href="../../../more/getting_started/windows.html#library-naming">on Windows</a></li>
<li><a class="reference external" href="../../../more/getting_started/unix-variants.html#library-naming">on Unix variants</a></li>
</ul>
<p class="last">Be sure to read this section even if your compiler supports
auto-linking, as Boost.Python does not yet take advantage of
@@ -579,7 +579,7 @@ that feature.</p>
<table class="docutils footnote" frame="void" id="toolset-specific" rules="none">
<colgroup><col class="label" /><col /></colgroup>
<tbody valign="top">
<tr><td class="label"><a class="fn-backref" href="#id18" name="toolset-specific">[3]</a></td><td>Because of the way most *nix platforms
<tr><td class="label"><a class="fn-backref" href="#id18">[3]</a></td><td>Because of the way most *nix platforms
share symbols among dynamically-loaded objects, I'm not certain
that extension modules built with different compiler toolsets
will always use different copies of the Boost.Python library
@@ -596,7 +596,7 @@ happens.</td></tr>
<table class="docutils footnote" frame="void" id="overwrite" rules="none">
<colgroup><col class="label" /><col /></colgroup>
<tbody valign="top">
<tr><td class="label"><a class="fn-backref" href="#id13" name="overwrite">[4]</a></td><td><tt class="docutils literal"><span class="pre">configure</span></tt> overwrites the existing
<tr><td class="label"><a class="fn-backref" href="#id13">[4]</a></td><td><tt class="docutils literal"><span class="pre">configure</span></tt> overwrites the existing
<tt class="docutils literal"><span class="pre">user-config.jam</span></tt> in your home directory
(if any) after making a backup of the old version.</td></tr>
</tbody>
@@ -604,7 +604,7 @@ happens.</td></tr>
<table class="docutils footnote" frame="void" id="flavor" rules="none">
<colgroup><col class="label" /><col /></colgroup>
<tbody valign="top">
<tr><td class="label"><a class="fn-backref" href="#id15" name="flavor">[5]</a></td><td>Note that the <tt class="docutils literal"><span class="pre">&lt;target-os&gt;cygwin</span></tt> feature is
<tr><td class="label"><a class="fn-backref" href="#id15">[5]</a></td><td>Note that the <tt class="docutils literal"><span class="pre">&lt;target-os&gt;cygwin</span></tt> feature is
different from the <tt class="docutils literal"><span class="pre">&lt;flavor&gt;cygwin</span></tt> subfeature of the <tt class="docutils literal"><span class="pre">gcc</span></tt>
toolset, and you might need handle both explicitly if you also
have a MinGW GCC installed.</td></tr>
@@ -613,19 +613,19 @@ have a MinGW GCC installed.</td></tr>
<table class="docutils footnote" frame="void" id="home-dir" rules="none">
<colgroup><col class="label" /><col /></colgroup>
<tbody valign="top">
<tr><td class="label"><a class="fn-backref" href="#id11" name="home-dir">[6]</a></td><td><p class="first">Windows users, your home directory can be
<tr><td class="label"><a class="fn-backref" href="#id11">[6]</a></td><td><p class="first">Windows users, your home directory can be
found by typing:</p>
<pre class="literal-block">
ECHO %HOMEDRIVE%%HOMEPATH%
</pre>
<p class="last">into a <a class="reference" href="../../../more/getting_started/windows.html#command-prompt">command prompt</a> window.</p>
<p class="last">into a <a class="reference external" href="../../../more/getting_started/windows.html#command-prompt">command prompt</a> window.</p>
</td></tr>
</tbody>
</table>
<table class="docutils footnote" frame="void" id="get-debug-build" rules="none">
<colgroup><col class="label" /><col /></colgroup>
<tbody valign="top">
<tr><td class="label"><a name="get-debug-build">[7]</a></td><td>On Unix and similar platforms, a debugging
<tr><td class="label"><a class="fn-backref" href="#id20">[7]</a></td><td>On Unix and similar platforms, a debugging
python and associated libraries are built by adding
<tt class="docutils literal"><span class="pre">--with-pydebug</span></tt> when configuring the Python build. On
Windows, the debugging version of Python is generated by
@@ -638,9 +638,9 @@ You may also find</td></tr>
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@@ -592,7 +592,7 @@ vice-versa.**
Since pre-built “python debugging” versions of the Python
executable and libraries are not supplied with most distributions
of Python, [#get-debug-build] and we didn't want to force our users
of Python, [#get-debug-build]_ and we didn't want to force our users
to build them, Boost.Build does not automatically enable python
debugging in its ``debug`` build variant (which is the default).
Instead there is a special build property called