对我来说，这是json-cpp附带的features.h与其他一些系统特性冲突的系统.我在json-cpp代码中将其本地重命名为json_features.h，一切都很好.

For me it was the features.h included with json-cpp conflicting with the system features.h in some other includes. I renamed it locally to json_features.h in the json-cpp code and all was well.