Xcode Version 6.1 (6A1030) – Apple Mach O-Linker Error – Building

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As usual when upgrading Xcode:

  • Clean your build folder (Product -> (Alt key) -> Clean Build Folder)
  • Clean project (Product -> Clean)
  • Delete derived data
    • Xcode < 6.3: Window -> Organizer -> Delete derived data
    • Xcode >= 6.3: Window -> Projects (select project) -> Delete derived data

Then try to build your project again.

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