title: Getting Apple Mach-O linker
body: <p>This is the error output I am getting when I try to run the project.</p>
  
  <pre><code>Undefined symbols for architecture i386:
  "_CATransform3DMakeScale", referenced from:
    -[AMSlideMenuMainViewController viewWillAppear:] in AMSlideMenuMainViewController.o
    ___54-[AMSlideMenuMainViewController openLeftMenuAnimated:]_block_invoke in AMSlideMenuMainViewController.o
    ___55-[AMSlideMenuMainViewController openRightMenuAnimated:]_block_invoke in AMSlideMenuMainViewController.o
    ___55-[AMSlideMenuMainViewController closeLeftMenuAnimated:]_block_invoke in AMSlideMenuMainViewController.o
    ___56-[AMSlideMenuMainViewController closeRightMenuAnimated:]_block_invoke in AMSlideMenuMainViewController.o
    -[AMSlideMenuMainViewController configure3DTransformForMenu:panningView:] in AMSlideMenuMainViewController.o
  
  ld: symbol(s) not found for architecture i386
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  enter code here
  </code></pre>
  
  <p>What does this mean and how can I get rid of it?
  Thanks for any help.</p>