我正在升级我的代码以使用 Swift 3 和 CocoaLumberjack 3.0.0。当我为 iPhone 构建时，编译和链接成功。当我尝试为模拟器构建时，它会编译但不会链接。我收到了几条表单消息：
Undefined symbols for architecture x86_64:
"CocoaLumberjack.DDLogDebug (@autoclosure () -> Swift.String, level : __C.DDLogLevel, context : Swift.Int, file : Swift.StaticString, function : Swift.StaticString, line : Swift.UInt, tag : Any?, asynchronous : Swift.Bool, ddlog : __ObjC.DDLog) -> ()", referenced from:
ScanmonListener.SMLViewController.buttonTitle.didset : Swift.String in SMLViewController.o
ScanmonListener.SMLViewController.viewDidLoad () -> () in SMLViewController.o
ScanmonListener.SMLViewController.viewDidAppear (Swift.Bool) -> () in SMLViewController.o
ScanmonListener.SMLViewController.viewDidDisappear (Swift.Bool) -> () in SMLViewController.o
ScanmonListener.SMLViewController.viewWillAppear (Swift.Bool) -> () in SMLViewController.o
ScanmonListener.SMLViewController.viewWillDisappear (Swift.Bool) -> () in SMLViewController.o
ScanmonListener.SMLViewController.doPlay () -> Swift.Bool in SMLViewController.o
...
我已经运行pod deintegrate并再次安装，但没有任何效果。