title: How to add ARC for specific file?
body: <p>I created a project without <code>ARC</code>. I want to use a <strong>third party SDK</strong> in my project. That <code>SDK</code> comes with <code>ARC</code> Support. So I want to add <code>ARC</code> for that third party files. I can disable <code>ARC</code> for all <code>"MYProject"</code> files by adding this flag into build phases like <code>-fno-objc-arc</code>.</p>
  
  <p>But I may use large number of files. So it's better to add <code>ARC</code> for specific <code>SDK</code> only. So how to add ARC support for single or specific <code>SDK</code> files in <code>XCode</code> Project?</p>
  
  <p><strong>For Instance:</strong> I want to use Grid View. I'm adding <code>GMGridView</code> in my project and it comes with <code>ARC</code> support.</p>