title: CMake reports 'Boost_DIR-NOT_FOUND' when trying to find Boost
body: <p>I want to build a library called CSWNet on my machine. Cmake can find Boost_INCLUDE_DIR and Boost_LIB_DIR but it cannot find an option called Boost_DIR which is a directory containing a CMake configuration file for Boost. Where is it? Please help, thanks ahead. The error I got is shown below and I installed boost from ubuntu repository and it's installed in /usr/local.</p>
  
  <pre><code> CMake Error at /usr/local/share/cmake-2.8/Modules/FindBoost.cmake:429 (message):
  When requesting a specific version of Boost, you must provide at least the
  major and minor version numbers, e.g., 1.34
  Call Stack (most recent call first):
  demos/CMakeLists.txt:149 (find_package)
  </code></pre>