title: Include Headers from added frameworks on Xcode
body: <p>I want to work with some frameworks like <code>glew</code> and <code>cg</code> so i manually added </p>
  
  <p>the needed frameworks to my project by right clicking the project -> Add files to ...</p>
  
  <p>and choosing the correct framework. The problem is, when i try to include the header files,</p>
  
  <p>Xcode cant find any of them. I hope this picture will help to understand:</p>
  
  <p><img src="https://i.stack.imgur.com/7CJMT.png" alt="enter image description here"></p>
  
  <p>And:</p>
  
  <p><img src="https://i.stack.imgur.com/Cxwdl.png" alt="enter image description here"></p>
  
  <p>The error given is for the <code>glew</code> framework, but it also happens on <code>Cg</code>.</p>
  
  <p>As you can see on the left, The needed frameworks were added.</p>
  
  <p>Any idea on how i can include these headers?</p>
  
  <p>After trying to add the header files manually i got an architecture error:</p>
  
  <p><img src="https://i.stack.imgur.com/Fyssm.png" alt="enter image description here"></p>
  
  <p>I dont know if this is how it should look like.
  Thanks!</p>