title: How do you set GDB debug flag with cmake?
body: <p>I have tried setting the debug flags using the</p>
  
  <pre><code>set
  </code></pre>
  
  <p>command in <code>cmake</code> but I cam unsure what to add. I have been told things like <code>DEBUG=true</code> but so far i am unable to find the correct flag to set. </p>