title: swiftc: Possible values for "-target" command line option
body: <p>There is Swift compiler option <strong>-target</strong>:</p>
  
  <pre><code>$ swiftc -h
  ...
  
   -target &lt;value&gt;         Generate code for the given target
  ...
  </code></pre>
  
  <p>Where from can I get all possible values for compiler option <strong>-target</strong> (i.e: <code>x86_64-apple-ios11.0</code>, <code>x86_64-apple-macosx10.12</code>, ...) ?</p>
  
  <p>Thanks!</p>