iOS How to resolve linking error from XCode - static lib iPhone

[Amit Jain]

Hi All,
I have tried making a static lib on iPhone but I am not able to use it in other project. I am getting this error

.objc_class_name_XMLParser", referenced from:
          literal-pointer@__OBJC@__cls_refs@XMLParser in Minutes2MidnightViewController.o
      ".objc_class_name_TickerViewController", referenced from:
          literal-pointer@__OBJC@__cls_refs@TickerViewController in Minutes2MidnightViewController.o
    ld: symbol(s) not found
    collect2: ld returned 1 exit status

" XML..and Ticker...are my classes using them static lib is made and "MinutesToMidnight" is the project where I am using this static Lib. I think this is something related to Linker error but how to resolve ? Please Help.