title: gcc - how to find path of header include file
body: <p>Do we have any option in gcc to find from where a particular file header is included.
  I have the following scenario :</p>
  
  <p>file_1.h :
  declare type of type_1</p>
  
  <p>file_2.h :</p>
  
  <p>type_1 var;</p>
  
  <p>I want to check where was file_1.h included in the library that i am creating.</p>