Linker Command failed with exit code 1 (use -v to see invocation), Xcode 8, Swift 3

Question

I can\'t get rid of this error!

I have tried all sorts of things like clearing Derived Data(Preferences->Locations->click gray arrow to open Derived Data fo

Answer 1

In my case, I was producing multiple products from the same project. For one of the products, the main.m file imported a header file from another folder under the same project. But that file was not included in "Complied Sources" under "Build Phase". This caused a linker error.

After carefully comparing the "Build Phases" settings for a product that could be built successfully, I realized that the .m file of the header needs to be included in the list of "Compiled Source". My issue was resolved after adding that file. Attaching a picture for clarity. The highlighted file had to be added.