在工程中要用到Muhku日历，导入后，系统给我报出两个错：
1: Undefined symbols for architecture i386: "_OBJC_CLASS_$_EKEventStore", referenced from: objc-class-ref in MAEventKitDataSource.o ld: symbol(s) not found for architecture i386
2: clang: error: linker command failed with exit code 1 (use -v to see invocation)
肿么回事？
是否是未在"Build phases"下的" Link Binary with libraries" 中添加Muhku 所使用的静态库?