title: How can I install gem libv8 in Mac OS Big Sur 11.0?
body: <p>When I try to install the libv8 gem version 7.3.492.27.1 with command</p>
  <pre><code>gem install libv8 -v '7.3.492.27.1'
  </code></pre>
  <p>it fails with</p>
  <pre><code>unable to fetch v8 source
  </code></pre>
  <p>How can I install libv8 in Mac OS Big Sur 11.0?</p>