title: Xcode Exit Code 1 - Duplicate Symbol
body: <p>Sorry I know this has been covered all over the place, only I can't fix this to save my life.</p>
  
  <p>If someone could explain clearly what I might have done and what I might be able to do to fix this I would be forever grateful.</p>
  
  <p>Here is my error:</p>
  
  <p><strong>Command /Xcode 4/Platforms/iPhoneOS.platform/Developer/usr/bin/llvm-gcc-4.2 failed with exit code 1</strong></p>
  
  <pre><code>ld: duplicate symbol _OBJC_IVAR_$_sunnyHillsTL._tileMap in /Users/kahanejosh/Library/Developer/Xcode/DerivedData/workingTitle-cawhuhbkmwcesmbqxvkbkbatdbze/Build/Products/Debug-iphoneos/libcocos2d libraries.a(sunnyHillsTL.o) and /Users/kahanejosh/Library/Developer/Xcode/DerivedData/workingTitle-cawhuhbkmwcesmbqxvkbkbatdbze/Build/Intermediates/workingTitle.build/Debug-iphoneos/workingTitle.build/Objects-normal/armv7/sunnyHillsTL.o
  
  
  Ld /Users/kahanejosh/Library/Developer/Xcode/DerivedData/workingTitle-cawhuhbkmwcesmbqxvkbkbatdbze/Build/Products/Debug-iphoneos/workingTitle.app/workingTitle normal armv7
      cd "/Users/kahanejosh/Documents/iPhone:Mac Dev/Working Title/workingTitle"
      setenv IPHONEOS_DEPLOYMENT_TARGET 3.0
      setenv PATH "/Xcode 4/Platforms/iPhoneOS.platform/Developer/usr/bin:/Xcode 4/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin"
      "/Xcode 4/Platforms/iPhoneOS.platform/Developer/usr/bin/llvm-gcc-4.2" -arch armv7 -isysroot "/Xcode 4/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS4.2.sdk" -L/Users/kahanejosh/Library/Developer/Xcode/DerivedData/workingTitle-cawhuhbkmwcesmbqxvkbkbatdbze/Build/Products/Debug-iphoneos -F/Users/kahanejosh/Library/Developer/Xcode/DerivedData/workingTitle-cawhuhbkmwcesmbqxvkbkbatdbze/Build/Products/Debug-iphoneos -filelist /Users/kahanejosh/Library/Developer/Xcode/DerivedData/workingTitle-cawhuhbkmwcesmbqxvkbkbatdbze/Build/Intermediates/workingTitle.build/Debug-iphoneos/workingTitle.build/Objects-normal/armv7/workingTitle.LinkFileList -dead_strip -all_load -ObjC -miphoneos-version-min=3.0 -framework CoreGraphics -framework Foundation -framework OpenGLES -framework QuartzCore -framework UIKit -framework AudioToolbox -framework OpenAL -lz -framework AVFoundation "-lcocos2d libraries" -o /Users/kahanejosh/Library/Developer/Xcode/DerivedData/workingTitle-cawhuhbkmwcesmbqxvkbkbatdbze/Build/Products/Debug-iphoneos/workingTitle.app/workingTitle
  
  ld: duplicate symbol _OBJC_IVAR_$_sunnyHillsTL._tileMap in /Users/kahanejosh/Library/Developer/Xcode/DerivedData/workingTitle-cawhuhbkmwcesmbqxvkbkbatdbze/Build/Products/Debug-iphoneos/libcocos2d libraries.a(sunnyHillsTL.o) and /Users/kahanejosh/Library/Developer/Xcode/DerivedData/workingTitle-cawhuhbkmwcesmbqxvkbkbatdbze/Build/Intermediates/workingTitle.build/Debug-iphoneos/workingTitle.build/Objects-normal/armv7/sunnyHillsTL.o
  collect2: ld returned 1 exit status
  Command /Xcode 4/Platforms/iPhoneOS.platform/Developer/usr/bin/llvm-gcc-4.2 failed with exit code 1
  </code></pre>