Funny "__OBJC_CLASS_$_" during compile/linking

I’ve been following the CoreData tutorial and I receive following errors during linking:

Undefined symbols for architecture i386:
  "_NSSQLiteStoreType", referenced from:
      -[AppDelegate persistentStoreCoordinator] in AppDelegate.o
  "_OBJC_CLASS_$_NSEntityDescription", referenced from:
      objc-class-ref in AddRoleTVC.o
  "_OBJC_CLASS_$_NSFetchRequest", referenced from:
      objc-class-ref in RolesTVC.o
  "_OBJC_CLASS_$_NSFetchedResultsController", referenced from:
      objc-class-ref in RolesTVC.o
  "_OBJC_CLASS_$_NSManagedObject", referenced from:
      _OBJC_CLASS_$_Role in Role.o
  "_OBJC_CLASS_$_NSManagedObjectContext", referenced from:
      objc-class-ref in AppDelegate.o
  "_OBJC_CLASS_$_NSManagedObjectModel", referenced from:
      objc-class-ref in AppDelegate.o
  "_OBJC_CLASS_$_NSPersistentStoreCoordinator", referenced from:
      objc-class-ref in AppDelegate.o
  "_OBJC_METACLASS_$_NSManagedObject", referenced from:
      _OBJC_METACLASS_$_Role in Role.o

Turns out, CoreData.framework wasn’t in my project. Adding that to the build phase solve the problem. As simple as that.

Published 14 Aug 2012

Software, Programming and Thoughts.Mohd Faiz Hasim on Twitter