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

It seems like the issue is different for most of us, and the error message has decent info. In my case, the Deployment Target was set to 10.13 by the export MACOSX_DEPLOYMENT_TARGET=10.13 line, but I was running 10.14. So I had to switch my Deployment Target to 10.14 in General > Deployment Info, in order for the ITLibrary-related symbols to be available again.

cd /Users/foo/src/scrobble/macos/itunes-scrobble
    export MACOSX_DEPLOYMENT_TARGET=10.13

... SNIP ...

Undefined symbols for architecture x86_64:
  "_OBJC_CLASS_$_ITLibMediaItem", referenced from:
      objc-class-ref in AppDelegate.o
  "_OBJC_CLASS_$_ITLibPlaylist", referenced from:
      objc-class-ref in AppDelegate.o
  "_OBJC_CLASS_$_ITLibrary", referenced from:
      objc-class-ref in AppDelegate.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)