title: How to link with Python3 Libs with cmake?
body: <p>I have Python3 installed via <code>brew install python3</code>. However, <code>cmake</code> cannot find PythonLibs 3. Here's the header of my <code>CMakeLists.txt</code>.</p>
  
  <pre><code>cmake_minimum_required(VERSION 3.0)
  find_package(PythonLibs 3 REQUIRED)
  </code></pre>
  
  <p>When I ran cmake, I got this error message</p>
  
  <pre><code>Could NOT find PythonLibs: Found unsuitable version "2.7.6", but required is at least "3" (found /usr/lib/libpython2.7.dylib)
  </code></pre>
  
  <p>Not sure what I did wrong.</p>