title: g++ can't find headers even when it's specified
body: <p>So basically I have some really simple code that includes <code>&lt;BigIntegerLibrary.hh&gt;</code> which resides in <code>/Users/wen/Projects/include/bigint</code>. I was compiling with this:</p>
  
  <p><code>g++ main.cpp -o Main -I/Users/wen/Projects/include/bigint</code></p>
  
  <p>but it reported a fatal error that it could not find the file. Am I doing it right? Thanks!</p>
  
  <p><code>main.cpp:4:10: fatal error: 'BigIntegerLibrary.hh' file not found</code></p>