weak reference error in xcode 8.3.2

[icyield]

Hi,

Bolts-ObjC-master/Bolts/iOS/BFAppLinkReturnToRefererView.m:33:1: error: cannot synthesize weak property in file using manual reference counting
@implementation BFAppLinkReturnToRefererView {
^
In file included from Bolts-ObjC-master/Bolts/iOS/BFAppLinkReturnToRefererView.m:11:
Bolts-ObjC-master/Bolts/iOS/BFAppLinkReturnToRefererView.h:57:70: note: property declared here
@Property (nonatomic, weak) id delegate;

For at least xcode 8.3.2. MacOS, and iOS targets.