In Xcode 6.1, creating a new project does not create a precompiled header file using the single view iOS project template. If I add one manually, any definitions in the pch file
Have you tried adding the path of the pch file?
Go to your project -> Build Settings -> Apple LLVM 6.0 Language
.
Under it, set the following things:
Update 2018/09/23: In Xcode10 it is under Apple Clang - Language