Apple Mach-O Linker Error when compiling for device

Solution 1:

Here is permanent solution.Generally overwriting project may cause this prolems.Try this method.

-UPDATE - Clang error - Mach-O Linker error

In some case error log window displaying .xctest error, to fix it

-> Select your project

-> Beside this(just before General tab) select your projectTest file from dropdown

-> There is one option (like ProjNameTests)

-> In Host Application, select your project from dropdown only if it show custom

DONE!

Old method deleted

Solution 2:

I had the same problem and the issue was that I have accidently imported a .m file instead of .h in an implementation file - hope it helps