title: How to silence #pragma messages from GCC
body: <p>I am not interested in seeing <code>#pragma message</code>s for my build. It just clutters the output.</p>
  <p>I tell this to Clang by passing <code>-Wno-#pragma-messages</code>. However, GCC does not understand that flag and I can not find any similar flag.</p>
  <p>How do I ask GCC to ignore <code>#pragma message</code>?</p>