title: Including libsimdpp in a CMake project
body: <p>I decided to use <a href="https://github.com/p12tic/libsimdpp" rel="nofollow">libsimdpp</a> for vectorization of my C++ code. Problem is, there is next to no documentation on how to get started. </p>
  
  <p>Í assumed inclusion would be simple given that it's also CMake based like the project I'm doing, so I just tried to copy over the directory and set the include path. Well, turns out this is not enough: You need to define the appropriate flags to specify which SIMD flavor you want to compile for. libsimdpp includes a CMake macro just for that and it works wonders. I'm not sure however how to get going from here and it feels like I'm working against CMake rather than with it by copying things around and deleting stuff.</p>
  
  <p>Would anyone with a firm understanding of CMake set out to explain what to do in a step-by-step fashion? Thanks!</p>