title: Apple Mach-O linker error in Xcode 6.0.1 (stable) in a project with CocoaPods
body: <p>I know some people will probably complain about this question, but I'm getting the following errors and just can't get any sense from it:</p>
  
  <p><img src="https://i.stack.imgur.com/ysU3e.png" alt="Error log"></p>
  
  <p>in text:</p>
  
  <pre><code>    Undefined symbols for architecture x86_64:
    "__TFSs26_forceBridgeFromObjectiveCU__FTPSs9AnyObject_MQ__Q_", referenced from:
        __TFC10SimpleTest14ViewController9writeTextfS0_FCSo15UIBarButtonItemT_ in ViewController.o
        __TFC10SimpleTest9Websocket17createHTTPRequestfS0_FT_T_ in Websocket.o
        __TFC10SimpleTest9Websocket19initStreamsWithDatafS0_FTCSo6NSDataSi_T_ in Websocket.o
        __TFC10SimpleTest9Websocket16disconnectStreamfS0_FGSqCSo7NSError_T_ in Websocket.o
        __TFC10SimpleTest9Websocket15errorWithDetailfS0_FTSS4codeVSs6UInt16_CSo7NSError in Websocket.o
        __TFFC10SimpleTest9Websocket15processResponseFS0_FCS0_10WSResponseSbU_FT_T_ in Websocket.o
    "__TFSsoi1oUSs17_RawOptionSetType_USs21BitwiseOperationsTypeSs9Equatable__FTQ_Q__Q_", referenced from:
        __TFC10SimpleTest11AppDelegate11applicationfS0_FTGSQCSo13UIApplication_29didFinishLaunchingWithOptionsGSQCSo12NSDictionary__Sb 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)
  </code></pre>
  
  <p>I think it has something to do with the bridging header. My project is in Swift but I added some pods (Obj-C). I've been searching for hours and couldn't find any working solution!</p>
  
  <p>Thanks for your help!</p>