OK, just connecting from vacation over GSM
Indeed, Bsp2Rbn is assumed to become a .EXE in Windows. It is fully separated from Realbot DLL.
The Makefile and compilation work fine under Linux but I cannot test it on Windows (no compiler).
Also, for the unresolved symbols, Bsp2Rbn requires NodeMachine.o(bj) from the Realbot dll project. In the Makefile, it fetches the required object file from the upper directory (you may want to copy this file back from Release directory).
The long term goal is indeed to add the code into realbot DLL but as it is complex code, I was afraid to add it to the DLL

This is why it is an external program for now.
-eric