It seems Takayama Fumihiko had forgotten a file in the source code zip for NesterDC pre-3, so if you were having trouble getting it to compile or anything, the source code zip file has been updated.
Here is what Takayama Fumihiko had to say.
“Sorry, previous release (nesterdc-5.0-pre3.tar.gz) lacks a file for SDL port. If you have no interest in SDL port, you don’t have to newly download.”
Get the download here.
Thanks to Hollywood Hansey for the update!