title: How do I compile and run a VHDL program on Mac with ghdl?
body: <p>i just wrote a simple VHDL program. I saved the file as a .vhd file. Then I compiled it with </p>
  
  <pre><code>ghdl -a test.vhd
  </code></pre>
  
  <p>and then built and executable file with </p>
  
  <pre><code>ghdl -e test
  </code></pre>
  
  <p>And finally tried to run it with </p>
  
  <pre><code>ghdl -r test
  </code></pre>
  
  <p>What happened is that I now have a <code>work-obj93.cf</code> file that is visible and two other files, namely <code>..</code> and <code>.</code> that are somehow invisible.</p>
  
  <p>Can someone tell how exactly I can test a vhdl program on my Mac? Maybe in in combination with GTKWave.</p>