title: Workaround for Core_extended.Shell.run on 32-bit machines
body: <p>I'm running into trouble (again) with Jane Street's <code>Core</code> library. I'm trying to run <code>curl</code> from an OCaml piece of code, using the following line:</p>
  
  <pre><code>Core_extended.Shell.run_full "curl" [url];;
  </code></pre>
  
  <p>I know for sure that <code>curl</code> is installed and working on my machine, but, at runtime, I get the following error, raised on the <code>curl</code> line:</p>
  
  <pre><code>Uncaught exception:
      (Failure "unsupported on 32bit machines")
  </code></pre>
  
  <p>The message makes it very clear what's happening here, but I've been looking for a workaround and haven't found anything relevant. Any idea?</p>