[boost] [serialization] register_type and dll/so module

Hi, In the serialization library, when classes are never serialized directly but rather through a pointer to the base class, the user need to call register_type so that the archive contains information about the derived classes. However, sometimes those derived classes are implemented in another dynamic loaded (dll/so) module. The type of the derived classes will not be known at compile time. How can cope with this? Does the library provide any facilities to help the user in this situation? Best regards, Lirong