title: including .h file from a different application/directory
body: <p>I have some .h files as follows (on Linux)</p>
  
  <pre><code>Source/Server/connect.h
  Source/Server/message.h
  ...
  </code></pre>
  
  <p>I am developing another application that needs the two .h files but is in a different directory</p>
  
  <pre><code>Source/App2/..
  </code></pre>
  
  <p>How can I include the connect.h file in the App2 application, considering that I use perforce and everyone else working on the application would have their own copy so adding an absolute path to the include library might not be a good idea but im not sure.</p>
  
  <p>EDIT:
  I use a proprietary build mechanism for building the code so will not be able to specify gcc options directly.</p>