title: Eclipse cdt couldn't resolve extern entities in c++ project
body: <p>My problem with eclipse c++ project that eclipse could not resolve extern functions, namespaces, variables, etc...
  Please, see the screenshot.</p>
  
  <p><img src="https://i.stack.imgur.com/CcW8n.jpg" alt="enter image description here"></p>
  
  <p><a href="http://imageshack.us/f/651/eclipse1e.jpg/" rel="nofollow noreferrer">Bigger one</a></p>
  
  <p>So, for example jni type <code>jint</code> is not resolved by eclipse, but, as you can see <code>jni.h</code> is included and resolved (I can CNTRL+click on it and view its content), I've set up all needed include path, so all files are included as they supposed to, but eclipse doesn't resolve entities from them.</p>
  
  <p>Where the problem might be there?</p>
  
  <p>PS. I'm a newbbie in the c++ development with eclipse, so I might miss something, please help me, I'll appreciate it a lot.</p>
  
  <p>Thanks.</p>