title: How do I build Boost from github?
body: <p>I git clone boost latest source code on master branch from Github. I tried to build it but failed,</p>
  
  <pre><code>$ ./bootstrap.sh 
    ./bootstrap.sh: line 188: ./tools/build/src/engine/build.sh: No such file or directory
    -n Building Boost.Build engine with toolset ... 
  
    Failed to build Boost.Build build engine
    Consult 'bootstrap.log' for more details
  </code></pre>
  
  <p>The content of <code>bootstrap.log</code></p>
  
  <blockquote>
    <p>1 ./bootstrap.sh: line 218: cd: ./tools/build/src/engine: No such file or directory</p>
  </blockquote>
  
  <hr>
  
  <p><strong>Question:</strong><br>
  I understand there is no  <code>./tools/build/src/engine</code>, how do I solve this? I also noted that </p>
  
  <blockquote>
    <p>-n Building Boost.Build engine with toolset ... </p>
  </blockquote>
  
  <p>however, <code>bootstrap.sh</code> doesn't have <code>-n</code> option.</p>
  
  <hr>
  
  <p>My develop environment:
  <code>MacOS X10.9</code>  <code>Xcode5.1</code></p>