链接器命令失败，退出代码为1（使用-v查看调用）和未定义的符号用于体系结构

Question

我有问题，我无法弄明白为什么......

Undefined symbols for architecture x86_64:
  "_OBJC_CLASS_$_QButtonElement", referenced from:
      objc-class-ref in AppDelegate.o
  "_OBJC_CLASS_$_QEntryElement", referenced from:
      objc-class-ref in AppDelegate.o
  "_OBJC_CLASS_$_QRootElement", referenced from:
      objc-class-ref in AppDelegate.o
  "_OBJC_CLASS_$_QSection", referenced from:
      objc-class-ref in AppDelegate.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Answer 1

我想通了，即使我已经删除了这个类，我仍然在代码中使用了QButtonElement ..