Facebook iOS SDK 3.1 with XCode 4.2 linker errors
I've just updated the Facebook iOS SDK in my project from 3.0 to 3.1. The project does not compile anymore. Instead I get the following linker errors: Undefined symbols for architecture i386: "_ACFacebookAppIdKey", referenced from: -[FBSession authorizeUsingSystemAccountStore:accountType:permissions:defaultAudience:isReauthorize:] in FacebookSDK(FBSession.o) "_ACFacebookAudienceEveryone", referenced from: -[FBSession authorizeUsingSystemAccountStore:accountType:permissions:defaultAudience:isReauthorize:] in FacebookSDK(FBSession.o) "_ACFacebookAudienceFriends", referenced from: -[FBSession