Dziwne błędy w plikach Apple Reachability
Próbuję pracować z osiągalnością w moim projekcie. Dodałem pliki Reachability.h i Reachability.m. Ale po zbudowaniu projektu xCode pokazuje mi dziwne błędy:
Undefined symbols for architecture i386:
"_SCNetworkReachabilityCreateWithName", referenced from:
+[Reachability reachabilityWithHostname:] in Reachability.o
"_SCNetworkReachabilityCreateWithAddress", referenced from:
+[Reachability reachabilityWithAddress:] in Reachability.o
"_SCNetworkReachabilitySetCallback", referenced from:
-[Reachability startNotifier] in Reachability.o
-[Reachability stopNotifier] in Reachability.o
"_SCError", referenced from:
-[Reachability startNotifier] in Reachability.o
"_SCErrorString", referenced from:
-[Reachability startNotifier] in Reachability.o
"_SCNetworkReachabilitySetDispatchQueue", referenced from:
-[Reachability startNotifier] in Reachability.o
-[Reachability stopNotifier] in Reachability.o
"_SCNetworkReachabilityGetFlags", referenced from:
-[Reachability isReachable] in Reachability.o
-[Reachability isReachableViaWWAN] in Reachability.o
-[Reachability isReachableViaWiFi] in Reachability.o
-[Reachability connectionRequired] in Reachability.o
-[Reachability isConnectionOnDemand] in Reachability.o
-[Reachability isInterventionRequired] in Reachability.o
-[Reachability reachabilityFlags] in Reachability.o
Jak mogę rozwiązać ten problem?