Undefined symbolsforarchitecture i386:
"_uregex_open", referenced from:
_rkl_getCachedRegexinRegexKitLite.o
"_uregex_groupCount", referenced from:
_rkl_getCachedRegexinRegexKitLite.o
"_uregex_setText", referenced from:
_rkl_setCachedRegexToStringinRegexKitLite.o
_rkl_clearCachedRegexSetToinRegexKitLite.o
-[RKLBlockEnumerationHelper initWithRegex:options:string:range:error:]inRegexKitLite.o
"_uregex_start", referenced from:
_rkl_performRegexOpinRegexKitLite.o
_rkl_searchinRegexKitLite.o
_rkl_findRangesinRegexKitLite.o
"_uregex_end", referenced from:
_rkl_performRegexOpinRegexKitLite.o
_rkl_searchinRegexKitLite.o
_rkl_findRangesinRegexKitLite.o
"_uregex_find", referenced from:
_rkl_searchinRegexKitLite.o
"_uregex_findNext", referenced from:
_rkl_searchinRegexKitLite.o
_rkl_replaceAllinRegexKitLite.o
"_uregex_reset", referenced from:
_rkl_replaceAllinRegexKitLite.o
"_uregex_appendReplacement", referenced from:
_rkl_replaceAllinRegexKitLite.o
"_uregex_appendTail", referenced from:
_rkl_replaceAllinRegexKitLite.o
"_uregex_close", referenced from:
_rkl_clearCachedRegexinRegexKitLite.o
"_u_errorName", referenced from:
_rkl_userInfoDictionaryinRegexKitLite.o
_rkl_makeNSErrorinRegexKitLite.o
_rkl_NSExceptionForRegexinRegexKitLite.o
"_u_strlen", referenced from:
_rkl_userInfoDictionaryinRegexKitLite.o
"_uregex_clone", referenced from:
-[RKLBlockEnumerationHelper initWithRegex:options:string:range:error:]inRegexKitLite.o
ld: symbol(s)notfoundforarchitecture i386
collect2: ld returned1exit status
解决办法：
在项目的编译设置中找到Other Linker Flags，然后在后面字段空白处双击，加入 -licucore 链接开关。如图所示：
注：不喜勿喷！！！
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