ios - Apple Mach-o 错误链接

Question

我收到此错误，但我不知道为什么，显然我的库链接良好

  ...
"_equalTo", referenced from:
  -[FBFacebookAppAuthenticationTests testImplFacebookAppAuthSuccessWithBehavior:] in FBFacebookAppAuthenticationTests.o
  -[FBGraphObjectTests testCanSetProperty] in FBGraphObjectTests.o
  -[FBGraphObjectTests testInsertObjectAtIndex] in FBGraphObjectTests.o
  -[FBGraphObjectTests testAddObject] in FBGraphObjectTests.o

ETC...

http://i.stack.imgur.com/fabie.png