Facebook iOS SDK and iOS6
facebook-ios-sdk, ios6
Solution
I actually understood what happened here after having the same issue on iOS7.0.
The call OSAtomicIncrement32 is defined as its own function on iOS >= 7.1, but it is also defined as an inline call to other functions for iOS < 7.1.
The right definition is used depending on the min deployment target, which for me was set to '7.1' in my podfile. Changing it to:
`platform :ios, '7.0'`
fixed the issue!
Problem
I'm currently trying to use the Facebook SDK official pod in its 3.14.1 version (also tried 3.9, same result) but I stumble upon an issue. Here is my code: ``` self->_session = [[FBSession alloc] initWithAppID:[[self class] facebookAppId] permissions:self.mandatoryPermissions urlSchemeSuffix:nil tokenCacheStrategy:[FBSessionTokenCachingStrategy defaultInstance]]; [self->_session openWithBehavior:FBSessionLoginBehaviorWithFallbackToWebView completionHandler:^(FBSession *session, FBSessionState state, NSError *error) { [self sessionStateChanged:session state:state error:error]; }]; ``` This is greatly inspired from code samples given by facebook : https://developers.facebook.com/docs/facebook-login/ios/v2.0 # Step 1b: Open the session using the custom class Here is the issue : ``` dyld: lazy symbol binding failed: Symbol not found: _OSAtomicDecrement32 Referenced from: /var/mobile/Applications/01DD5CE2-39A9-40AE-A8FC-170F7387D434/Dubb.app/Dubb Expected in: /usr/lib/libSystem.B.dylib dyld: Symbol not found: _OSAtomicDecrement32 Referenced from: /var/mobile/Applications/01DD5CE2-39A9-40AE-A8FC-170F7387D434/Dubb.app/Dubb Expected in: /usr/lib/libSystem.B.dylib ``` By looking at their SDK code I can't see fallbacks for the `OSAtomicDecrement32` in case it doesn't exist, and it in fact exists sstarting with iOS 7.1. Any advice? Thanks