#define JSON_HAS_STATIC_RTTI /* value */
This macro indicates whether the standard library has any support for RTTI (run time type information). Possible values are 1 when supported or 0 when unsupported.
The default value is detected based on the preprocessor macro _HAS_STATIC_RTTI.
When the macro is not defined, the library will define it to its default value.
Example
The code below forces the library to enable support for libraries with RTTI dependence:
#define JSON_HAS_STATIC_RTTI 1 #include <nlohmann/json.hpp> ...