title: Force Eclipse to treat .c files as C++
body: <p>I'm working with an external project that uses <code>.c</code> file extension for C++ files (they will not change this, I have even sent them a full patch).</p>
  
  <p>Is there any way to force Eclipse (autotools project) to index all <code>.c</code>/<code>.h</code> files as C++?</p>