title: xcode 4.5 : Undefined symbols for architecture armv7s:
body: <p>i'm totally went crazy for that issue..
        i have project that was working fine but after i added facebook sdk it gives me the following errors (errors that made me remove armv6 hoping it will work fine after but it gives more issue as i'm going through it.. 
  i'm using now arch armv7 and armv7s together and that is the error it gives</p>
  
  <blockquote>
    <p>/Users/ME/Library/Developer/Xcode/DerivedData/Cocktail-gfjrrmcunekvfiacogqdfcxliqfg/Build/Intermediates/Cocktail.build/Debug-iphoneos/Cocktail.build/Objects-normal/armv7/Cocktail normal armv7
        cd "/Users/ME/Apple DistributedApps/Cocktail All/Cocktail"
        setenv IPHONEOS_DEPLOYMENT_TARGET 4.3
        setenv PATH "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin"
        /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -arch armv7 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.0.sdk -L/Users/ME/Library/Developer/Xcode/DerivedData/MyProj-gfjrrmcunekvfiacogqdfcxliqfg/Build/Products/Debug-iphoneos "-L/Users/ME/Apple DistributedApps/MyProj All/MyProj" -F/Users/ME/Library/Developer/Xcode/DerivedData/MyProj-gfjrrmcunekvfiacogqdfcxliqfg/Build/Products/Debug-iphoneos "-F/Users/ME/Apple DistributedApps/MyProj All/MyProj" -filelist /Users/ME/Library/Developer/Xcode/DerivedData/MyProj-gfjrrmcunekvfiacogqdfcxliqfg/Build/Intermediates/MyProj.build/Debug-iphoneos/MyProj.build/Objects-normal/armv7/MyProj.LinkFileList -dead_strip -ObjC -all_load -lxml2 -lsqlite3.0 -fobjc-arc -fobjc-link-runtime -miphoneos-version-min=4.3 -framework AdSupport -framework Social -framework SystemConfiguration -framework MapKit -framework CoreLocation -framework Twitter -framework AssetsLibrary -framework MobileCoreServices -framework CoreVideo -framework CoreMedia -lz -lsqlite3.0 -framework AddressBook -framework CFNetwork -framework CoreFoundation -framework Security -framework iAd -framework MessageUI -framework QuartzCore -framework AudioToolbox -framework MediaPlayer -framework AVFoundation -framework CoreGraphics -framework UIKit -framework Foundation -framework FacebookSDK -framework RevMobAds -lFlurryAnalytics -o /Users/ME/Library/Developer/Xcode/DerivedData/MyProj-gfjrrmcunekvfiacogqdfcxliqfg/Build/Intermediates/MyProj.build/Debug-iphoneos/MyProj.build/Objects-normal/armv7/MyProj</p>
  </blockquote>
  
  <pre><code>    Undefined symbols for architecture armv7:
    "_OBJC_CLASS_$_ACAccountStore", referenced from:
        objc-class-ref in FacebookSDK(FBSession.o)
    "_SKStoreProductParameterITunesItemIdentifier", referenced from:
        -[RevMobStoreController openStoreWithITunesItemId:] in RevMobAds(RevMobStoreController.o)
    "_ACFacebookAudienceFriends", referenced from:
        -[FBSession authorizeUsingSystemAccountStore:accountType:permissions:defaultAudience:isReauthorize:] in FacebookSDK(FBSession.o)
    "_OBJC_CLASS_$_SKStoreProductViewController", referenced from:
        objc-class-ref in RevMobAds(RevMobStoreController.o)
    "_OBJC_CLASS_$_GADBannerView", referenced from:
        objc-class-ref in NewsViewController.o
        objc-class-ref in SportsViewController.o
        objc-class-ref in LecViewController.o
        objc-class-ref in AccViewController.o
        objc-class-ref in JokesViewController.o
        objc-class-ref in GamesViewController.o
        objc-class-ref in CaricViewController.o
        ...
    "_ACFacebookAppIdKey", referenced from:
        -[FBSession authorizeUsingSystemAccountStore:accountType:permissions:defaultAudience:isReauthorize:] in FacebookSDK(FBSession.o)
    "_ACAccountTypeIdentifierFacebook", referenced from:
        +[FBSession renewSystemAuthorization] in FacebookSDK(FBSession.o)
    "_ACFacebookAudienceKey", referenced from:
        -[FBSession authorizeUsingSystemAccountStore:accountType:permissions:defaultAudience:isReauthorize:] in FacebookSDK(FBSession.o)
    "_ACFacebookAudienceOnlyMe", referenced from:
        -[FBSession authorizeUsingSystemAccountStore:accountType:permissions:defaultAudience:isReauthorize:] in FacebookSDK(FBSession.o)
    "_kGADAdSizeSmartBannerPortrait", referenced from:
        -[NewsViewController shouldAutorotateToInterfaceOrientation:] in NewsViewController.o
        -[SportsViewController viewDidLoad] in SportsViewController.o
        -[LecViewController viewDidLoad] in LecViewController.o
        -[AccViewController viewDidLoad] in AccViewController.o
        -[JokesViewController viewDidLoad] in JokesViewController.o
        -[GamesViewController viewDidLoad] in GamesViewController.o
        -[CaricViewController viewDidLoad] in CaricViewController.o
        ...
    "_OBJC_CLASS_$_GADRequest", referenced from:
        objc-class-ref in NewsViewController.o
        objc-class-ref in SportsViewController.o
        objc-class-ref in LecViewController.o
        objc-class-ref in AccViewController.o
        objc-class-ref in JokesViewController.o
        objc-class-ref in GamesViewController.o
        objc-class-ref in CaricViewController.o
        ...
    "_ACFacebookPermissionsKey", referenced from:
        -[FBSession authorizeUsingSystemAccountStore:accountType:permissions:defaultAudience:isReauthorize:] in FacebookSDK(FBSession.o)
    "_CGSizeFromGADAdSize", referenced from:
        -[NewsViewController shouldAutorotateToInterfaceOrientation:] in NewsViewController.o
        -[SportsViewController viewDidLoad] in SportsViewController.o
        -[LecViewController viewDidLoad] in LecViewController.o
        -[AccViewController viewDidLoad] in AccViewController.o
        -[JokesViewController viewDidLoad] in JokesViewController.o
        -[GamesViewController viewDidLoad] in GamesViewController.o
        -[CaricViewController viewDidLoad] in CaricViewController.o
        ...
    "_ACFacebookAudienceEveryone", referenced from:
        -[FBSession authorizeUsingSystemAccountStore:accountType:permissions:defaultAudience:isReauthorize:] in FacebookSDK(FBSession.o)
  ld: symbol(s) not found for architecture armv7
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  </code></pre>