title: Installing numpy in virtualenv on raspbian
body: <p>I'm running a raspberry pi3 and created a virtualenv. I'm using pip to install numpy. 
  I'm following the steps shown in <a href="http://www.pyimagesearch.com/2015/10/26/how-to-install-opencv-3-on-raspbian-jessie/" rel="nofollow">this link</a></p>
  
  <p>I'm getting stuck with an error and not able to proceed, any ideas on a solution?</p>
  
  <p><a href="http://pastebin.com/KcteWwKx" rel="nofollow">Pastebin</a> for the error</p>