title: How to determine PCL (Point Cloud Library) version in C++ code?
body: <p>Is there any way to check PCL version in C++ code?<br>
  I need compatibility between 1.6 and 1.7 on source code level, i. e. something like this:</p>
  
  <pre><code>#if PCL_VERSION &gt;= 1.7
  // some tasty functionality
  #else
  some old replacement
  #endif
  </code></pre>