DSFMLC is a C/C++ library based off of CSFML to allow DSFML the ablility to interact with and use the SFML library.
The purpose of DSFMLC is to be a better link between DSFML and SFML than CSFML was, and also fixes some issues encountered wtih CSFML, namely this issue.
DSFML uses the shared libraries produced by DSFMLC, so you need to build them in order use DSFML. For prebuilt binaries you can use these.
To build from source, you can go here or follow SFML's tutorial.
Feel free to open up some issues in the tracker! The backend doesn't see as much love as the front end.