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       The <strong>LLDB</strong> Debugger
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     			<h1 class ="postheader">Building LLDB on Mac OS X</h1>
     			<div class="postcontent">
     			    <p>Building on Mac OS X is as easy as downloading the code and building the Xcode project or workspace:</p>
                 </div>
                 <div class="postcontent">
                     <h2>Preliminaries</h2>
                     <ul>
                         <li>XCode 4.3 or newer requires the "Command Line Tools" component (XCode->Preferences->Downloads->Components).</li>
                         <li>Mac OS X Lion or newer requires installing <a href="http://swig.org">Swig</a>.</li>
                     </ul>
                     <h2>Building LLDB</h2>
     			    <ul>
                         <li><a href="download.html">Download</a> the lldb sources.</li>
                         <li>Follow the code signing instructions in <b>lldb/docs/code-signing.txt</b></li>
                         <li>In Xcode 3.x: <b>lldb/lldb.xcodeproj</b>, select the <b>lldb-tool</b> target, and build.</li>
                         <li>In Xcode 4.x: <b>lldb/lldb.xcworkspace</b>, select the <b>lldb-tool</b> scheme, and build.</li>
     			    </ul>
     			</div>
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           	</div>
     		<div class="post">
     			<h1 class ="postheader">Building LLDB on Linux</h1>
     			<div class="postcontent">
     			    <p>This document describes the steps needed to compile LLDB on most Linux systems.</a></p>
     			</div>
     			<div class="postcontent">
                 <h2>Preliminaries</h2>
                 <p>LLDB relies on many of the technologies developed by the larger LLVM project.
                 In particular, it requires both Clang and LLVM itself in order to build.  Due to
                 this tight integration the <em>Getting Started</em> guides for both of these projects
                 come as prerequisite reading:</p>
 			    <ul>
                     <li><a href="http://llvm.org/docs/GettingStarted.html">LLVM</a></li>
                     <li><a href="http://clang.llvm.org/get_started.html">Clang</a></li>
                 </ul>
                 <p>In addition to any dependencies required by LLVM and Clang, LLDB needs a few
                 development packages that may also need to be installed depending on your
                 system.  The current list of dependencies are:</p>
     			<ul>
                     <li><a href="http://swig.org">Swig</a></li>
                     <li><a href="http://www.thrysoee.dk/editline">libedit</a></li>
                     <li><a href="http://www.python.org">Python</a></li>
                 </ul>
                 <p>So for example, on a Fedora system one might run:</p>
                 <code>&gt; yum install swig python-devel libedit-devel</code>
                 <p>On an Ubuntu system one might run:</p>
                 <code>&gt; sudo apt-get install swig python-dev libedit-dev </code>
                 <p>If building using GCC instead of Clang, GCC 4.6.2 or newer is required.</p>
                 <ul>
                     <li><a href="http://gcc.gnu.org">GCC</a></li>
                 </ul>
                 <h2 >Building LLDB</h2>
                 <p>We first need to checkout the source trees into the appropriate locations.  Both
                 Clang and LLDB build as subprojects of LLVM.  This means we will be checking out
                 the source for both Clang and LLDB into the <tt>tools</tt> subdirectory of LLVM.  We
                 will be setting up a directory hierarchy looking something like this:</p>
                 <p>
                 <pre><tt>
                   llvm
                   |
                   `-- tools
                       |
                       +-- clang
                       |
                       `-- lldb
                 </tt></pre>
                 </p>
                 <p>For reference, we will call the root of the LLVM project tree <tt>$llvm</tt>, and the
                 roots of the Clang and LLDB source trees <tt>$clang</tt> and <tt>$lldb</tt> respectively.</p>
                 <p>Change to the directory where you want to do development work and checkout LLVM:</p>
                 <code>&gt; svn co http://llvm.org/svn/llvm-project/llvm/trunk llvm</code>

                 <p>Now switch to LLVM&#8217;s tools subdirectory and checkout both Clang and LLDB:</p>
                 <code>&gt; cd $llvm/tools
                 <br>&gt; svn co http://llvm.org/svn/llvm-project/cfe/trunk clang
                 <br>&gt; svn co http://llvm.org/svn/llvm-project/lldb/trunk lldb
                 </code>

                 <p>In general, building the LLDB trunk revision requires trunk revisions of both
                 LLVM and Clang.
                 <p>It is highly recommended that you build the system out of tree.  Create a second
                 build directory and configure the LLVM project tree to your specifications as
                 outlined in LLVM&#8217;s <em>Getting Started Guide</em>.  A typical build procedure
                 might be:</p>
                 <code>&gt; cd $llvm/..
                   <br>&gt; mkdir build
                   <br>&gt; cd build
                   <br>&gt; $llvm/configure --enable-cxx11 --enable-libcpp
                   <br>&gt; make </code>
                 <p>Note that once both LLVM and Clang have been configured and built it is not
                 necessary to perform a top-level <tt>make</tt> to rebuild changes made only to LLDB.
                 You can run <tt>make</tt> from the <tt>build/tools/lldb</tt> subdirectory as well. If your
                 compiler doesn't support libc++, you may need to tweak or remove the last
                 parameter to the configure script.</p>

                 <h2>Additional Notes</h2>
                 <p>LLDB has a Python scripting capability and supplies its own Python module,
                 <tt>lldb</tt>, built alongside the <tt>lldb</tt> binary.  Python needs to know where to
                 look for this module when LLDB starts up.  To tell python the location of LLDB, set
                 <tt>PYTHONPATH</tt> environment variable.
                 <p>In bash with a <tt>Debug+Asserts</tt> build (the default if configure is invoked
                 like in the example on this page) one might run:</p>
                 <code>&gt; export PYTHONPATH=$llvm/build/Debug+Asserts/lib/python2.7/site-packages</code>
                 <p>If you used different configure flags, or have a different version of python,
                 you may need to adjust the above to suit your needs. To test that the lldb python module
                 is built correctly and is available to Python, run:</p>
                 <code>&gt; python -c 'import lldb'</code></p>
                 </div>
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	<title>Building LLDB</title>
	</head>

	<body>
	<div class="www_title">
	The <strong>LLDB</strong> Debugger
	</div>

	<div id="container">
	<div id="content">

	<!--#include virtual="sidebar.incl"-->

	<div id="middle">
	<div class="post">
	<h1 class ="postheader">Building LLDB on Mac OS X</h1>
	<div class="postcontent">
	<p>Building on Mac OS X is as easy as downloading the code and building the Xcode project or workspace:</p>
	</div>
	<div class="postcontent">
	<h2>Preliminaries</h2>
	<ul>
	<li>XCode 4.3 or newer requires the "Command Line Tools" component (XCode->Preferences->Downloads->Components).</li>
	<li>Mac OS X Lion or newer requires installing <a href="http://swig.org">Swig</a>.</li>
	</ul>
	<h2>Building LLDB</h2>
	<ul>
	<li><a href="download.html">Download</a> the lldb sources.</li>
	<li>Follow the code signing instructions in <b>lldb/docs/code-signing.txt</b></li>
	<li>In Xcode 3.x: <b>lldb/lldb.xcodeproj</b>, select the <b>lldb-tool</b> target, and build.</li>
	<li>In Xcode 4.x: <b>lldb/lldb.xcworkspace</b>, select the <b>lldb-tool</b> scheme, and build.</li>
	</ul>
	</div>
	<div class="postfooter"></div>
	</div>
	<div class="post">
	<h1 class ="postheader">Building LLDB on Linux</h1>
	<div class="postcontent">
	<p>This document describes the steps needed to compile LLDB on most Linux systems.</a></p>
	</div>
	<div class="postcontent">
	<h2>Preliminaries</h2>
	<p>LLDB relies on many of the technologies developed by the larger LLVM project.
	In particular, it requires both Clang and LLVM itself in order to build. Due to
	this tight integration the <em>Getting Started</em> guides for both of these projects
	come as prerequisite reading:</p>
	<ul>
	<li><a href="http://llvm.org/docs/GettingStarted.html">LLVM</a></li>
	<li><a href="http://clang.llvm.org/get_started.html">Clang</a></li>
	</ul>
	<p>In addition to any dependencies required by LLVM and Clang, LLDB needs a few
	development packages that may also need to be installed depending on your
	system. The current list of dependencies are:</p>
	<ul>
	<li><a href="http://swig.org">Swig</a></li>
	<li><a href="http://www.thrysoee.dk/editline">libedit</a></li>
	<li><a href="http://www.python.org">Python</a></li>
	</ul>
	<p>So for example, on a Fedora system one might run:</p>
	<code>> yum install swig python-devel libedit-devel</code>
	<p>On an Ubuntu system one might run:</p>
	<code>> sudo apt-get install swig python-dev libedit-dev </code>
	<p>If building using GCC instead of Clang, GCC 4.6.2 or newer is required.</p>
	<ul>
	<li><a href="http://gcc.gnu.org">GCC</a></li>
	</ul>
	<h2 >Building LLDB</h2>
	<p>We first need to checkout the source trees into the appropriate locations. Both
	Clang and LLDB build as subprojects of LLVM. This means we will be checking out
	the source for both Clang and LLDB into the <tt>tools</tt> subdirectory of LLVM. We
	will be setting up a directory hierarchy looking something like this:</p>
	<p>
	<pre><tt>
	llvm
	\|
	`-- tools
	\|
	+-- clang
	\|
	`-- lldb
	</tt></pre>
	</p>
	<p>For reference, we will call the root of the LLVM project tree <tt>$llvm</tt>, and the
	roots of the Clang and LLDB source trees <tt>$clang</tt> and <tt>$lldb</tt> respectively.</p>
	<p>Change to the directory where you want to do development work and checkout LLVM:</p>
	<code>> svn co http://llvm.org/svn/llvm-project/llvm/trunk llvm</code>

	<p>Now switch to LLVM’s tools subdirectory and checkout both Clang and LLDB:</p>
	<code>> cd $llvm/tools
	<br>> svn co http://llvm.org/svn/llvm-project/cfe/trunk clang
	<br>> svn co http://llvm.org/svn/llvm-project/lldb/trunk lldb
	</code>

	<p>In general, building the LLDB trunk revision requires trunk revisions of both
	LLVM and Clang.
	<p>It is highly recommended that you build the system out of tree. Create a second
	build directory and configure the LLVM project tree to your specifications as
	outlined in LLVM’s <em>Getting Started Guide</em>. A typical build procedure
	might be:</p>
	<code>> cd $llvm/..
	<br>> mkdir build
	<br>> cd build
	<br>> $llvm/configure --enable-cxx11 --enable-libcpp
	<br>> make </code>
	<p>Note that once both LLVM and Clang have been configured and built it is not
	necessary to perform a top-level <tt>make</tt> to rebuild changes made only to LLDB.
	You can run <tt>make</tt> from the <tt>build/tools/lldb</tt> subdirectory as well. If your
	compiler doesn't support libc++, you may need to tweak or remove the last
	parameter to the configure script.</p>

	<h2>Additional Notes</h2>
	<p>LLDB has a Python scripting capability and supplies its own Python module,
	<tt>lldb</tt>, built alongside the <tt>lldb</tt> binary. Python needs to know where to
	look for this module when LLDB starts up. To tell python the location of LLDB, set
	<tt>PYTHONPATH</tt> environment variable.
	<p>In bash with a <tt>Debug+Asserts</tt> build (the default if configure is invoked
	like in the example on this page) one might run:</p>
	<code>> export PYTHONPATH=$llvm/build/Debug+Asserts/lib/python2.7/site-packages</code>
	<p>If you used different configure flags, or have a different version of python,
	you may need to adjust the above to suit your needs. To test that the lldb python module
	is built correctly and is available to Python, run:</p>
	<code>> python -c 'import lldb'</code></p>
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