使用RegexLiteKit在mapview上绘制路径时出错

Undefined symbols for architecture i386:
  "_uregex_start",referenced from:
      _rkl_performRegexOp in RegexKitLite.o
      _rkl_search in RegexKitLite.o
      _rkl_findRanges in RegexKitLite.o
  "_uregex_end",referenced from:
      _rkl_performRegexOp in RegexKitLite.o
      _rkl_search in RegexKitLite.o
      _rkl_findRanges in RegexKitLite.o
  "_uregex_setText",referenced from:
      _rkl_clearCacheSlotSetTo in RegexKitLite.o
      _rkl_setCacheSlotToString in RegexKitLite.o
  "_uregex_find",referenced from:
      _rkl_search in RegexKitLite.o
  "_uregex_findNext",referenced from:
      _rkl_search in RegexKitLite.o
      _rkl_replaceAll in RegexKitLite.o
  "_u_errorName",referenced from:
      _rkl_NSExceptionForRegex in RegexKitLite.o
      _rkl_userInfoDictionary in RegexKitLite.o
  "_u_strlen",referenced from:
      _rkl_userInfoDictionary in RegexKitLite.o
  "_uregex_reset",referenced from:
      _rkl_replaceAll in RegexKitLite.o
  "_uregex_appendreplacement",referenced from:
      _rkl_replaceAll in RegexKitLite.o
  "_uregex_appendTail",referenced from:
      _rkl_replaceAll in RegexKitLite.o
  "_uregex_open",referenced from:
      _rkl_getCachedRegex in RegexKitLite.o
  "_uregex_groupCount",referenced from:
      _rkl_getCachedRegex in RegexKitLite.o
  "_uregex_close",referenced from:
      _rkl_clearCacheSlotRegex in RegexKitLite.o

ld: symbol(s) not found for architecture i386
clang: error: linker command Failed with exit code 1 (use -v to see invocation)

有没有办法使RegexLiteKit工作？请帮忙..