title: Could not build Objective-C module 'SwiftGlibc'
body: <p>I have installed Swift 3.1.1 on my Ubuntu 16.04 machine following the instructions on Swift.org. When I tried to import glibc in the REPL, errors showed up. I could not find any cases like this online. Can anyone tell me how to fix it?</p>
  
  <p><a href="https://i.stack.imgur.com/khD1J.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/khD1J.png" alt="enter image description here"></a></p>