title: No rule to process file for architecture armv6
body: <p>I recently migrated to XCode 4.5 with iOS SDK 6.0. Now when i try to archive my app, i get a long list of compiler warnings all reading the same. </p>
  
  <blockquote>
    <p>warning: no rule to process file '$(PROJECT_DIR)/Classes/Utils.m' of type sourcecode.c.objc for architecture armv6</p>
    
    <p>warning: architecture armv6 is not supported (current ARCHS = "armv7 armv6").</p>
  </blockquote>
  
  <p>I cannot understand the last line, it says armv6 is not not supported,but armv6 is present as you can see. </p>
  
  <p>1) How do i fix this? </p>
  
  <p><img src="https://i.stack.imgur.com/37evG.png" alt="Screenshot of project file"></p>
  
  <p>2) What could be the implication of this? as this is just a warning? Will my app update not run of iphone 3gs? </p>
  
  <p>Thanks</p>