ii need these functions :

```
_SCNetworkReachabilityUnscheduleFromRunLoop
_SecTrustEvaluate
_SCNetworkReachabilityScheduleWithRunLoop
_SCNetworkReachabilitySetCallback
_SCNetworkReachabilityCreateWithName

```

but I can't find in with framework they are defined (I m not developing under xcode, so I need to know the framework name)