N-Prolog ver1.2
N-Prolog(NPL) is an interpreter and compiler to be compatible with Arity/Prolog32.
N-Prolog is NOT ISO-Prolog. About Arity/prolog32
On raspberry Pi install "make" -> "make raspi"
N-Prolog includes WiringPi builtin predicates.
I welcome your issus and bug reports.