why i compile it ,it push the error like that :

[helinyu]

Undefined symbols for architecture x86_64: "_MBProgressMaxOffset", referenced from: -[MKViewController hud:] in MKFramework(MKViewController.o) ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation)