It's not included implicitly by the frameworks anymore.
Undefined symbols for architecture x86_64:
"_NSDefaultRunLoopMode", referenced from:
_Cocoa_PumpEvents in SDL_cocoaevents.o
"_NSURLIsAliasFileKey", referenced from:
-[SDLWindow performDragOperation:] in SDL_cocoawindow.o
"_OBJC_CLASS_$_NSArray", referenced from:
objc-class-ref in SDL_cocoaclipboard.o
objc-class-ref in SDL_cocoakeyboard.o
objc-class-ref in SDL_cocoawindow.o
"_OBJC_CLASS_$_NSData", referenced from:
objc-class-ref in SDL_cocoamouse.o
"_OBJC_CLASS_$_NSDate", referenced from:
objc-class-ref in SDL_cocoaevents.o
"_OBJC_CLASS_$_NSDictionary", referenced from:
objc-class-ref in SDL_cocoaevents.o
"_OBJC_CLASS_$_NSMutableArray", referenced from:
objc-class-ref in SDL_cocoawindow.o
"_OBJC_CLASS_$_NSURL", referenced from:
objc-class-ref in SDL_cocoawindow.o
"_OBJC_CLASS_$_NSUserDefaults", referenced from:
objc-class-ref in SDL_cocoaevents.o
"_OBJC_EHTYPE_$_NSException", referenced from:
GCC_except_table67 in SDL_cocoawindow.o
ld: symbol(s) not found for architecture x86_64