Add PCH in Xcode6

1,command+n, open the new File window: ios->other->pch file, create a PCH document: "Project name-prefix.pch":

2, add the path to the precompile header option in building setting "$ (srcroot)/project name/PCH filename" (For example: $ (srcroot)/lotteryfive/ LOTTERYFIVE-PREFIX.PCH)

Yes, compile the program, if you have an error check the path you added is correct.

3, precompile Prefix header is yes, pre-compiled PCH file will be cached, can improve the speed of compilation

Add PCH in Xcode6