title: Use of undeclared identifier for a macro
body: <p>In my app i'm performing following steps</p>
  
  <p>1) Created a .h file Say, GlobalMacros.h</p>
  
  <p>In GlobalMacros.h</p>
  
  <pre><code>#define IP_ADDR @“SERVER_IP”
  </code></pre>
  
  <p>2) In my apps .pch file</p>
  
  <pre><code>import “GlobalMacros.h”
  </code></pre>
  
  <p>Then in rest of the other classes i'm using this IP_ADDR macro in iOS&lt;5.0 no Problems but in iOS>5.0 i'm getting an error <strong>use of undeclared identifier IP_ADDR</strong></p>