PCH File in Xcode 6

Make new file: ⌘cmd+N iOS/Mac > Other > PCH File > YourProject-Prefix.pch. Make sure you display “All” and not “Basic”. (Blue buttons) Project > Build Settings > Search: “Prefix Header”. Under “Apple LLVM 7.0” you will get the Prefix Header key. Type file directory. e.g: “$(SRCROOT)/$(PROJECT_NAME)/ProjectName-Prefix.pch”. Clean project: ⌘cmd+⇧shift+K Build project: ⌘cmd+B