title: How to compile so file from Mongodb c++ 2.2 source codes?
body: <p>Today I try to upgrade my driver for mongodb 2.2. But only get libmongoclient.a file.
  The download url is:
  <a href="http://downloads.mongodb.org/cxx-driver/mongodb-linux-x86_64-v2.2-latest.tgz" rel="nofollow">http://downloads.mongodb.org/cxx-driver/mongodb-linux-x86_64-v2.2-latest.tgz</a>
  Here is my way:</p>
  
  <pre><code>scons --prefix=/usr install
  </code></pre>