+
+WK_SAFE_BROWSING_LDFLAGS[sdk=iphone*] = -framework SafariSafeBrowsing;
+WK_SAFE_BROWSING_LDFLAGS[sdk=iphone*10.*] = ;
+WK_SAFE_BROWSING_LDFLAGS[sdk=macosx*] = $(WK_SAFE_BROWSING_LDFLAGS$(WK_MACOS_1013));
+WK_SAFE_BROWSING_LDFLAGS_MACOS_SINCE_1013 = -weak_framework SafariSafeBrowsing;