'FBSDKLoginKit/FBSDKLoginKit.h' file not found (Facebook SDK for iOS v4.2 & Xcode 7)

I had the same problem.

Managed to sort the directory by adding the Facebook SDK in "Framework Search Path".

Target -> Build Settings -> Framework Search Paths -> + /Users//Documents/FacebookSDK

it works!

=]

For those using cocoapods the solution for me was actually adding FBSDKCoreKit to podfile:

pod 'FBSDKCoreKit'
pod 'FBSDKLoginKit'

The facebook documentation is incomplete, they dont mention anything about including FBSDKCoreKit pod reference.

For [login,sharekit,corekit].h file not found error , My solution was:

changing framework searchpath of RCTFBSDK (inside library of the project)

~/Documents/FacebookSDK 

to

$(HOME)/Documents/FacebookSDK