Defining a serial port

Projects Programming
1

Hello,
I have two libraries, Pollserial and OBD

In my program I want to work with Pollserial serial port, but obd library works with port SerialO.

Obd.cpp:

#ifndef OBDUART
#define OBDUART Serial
#endif

And to state the serial port I use (Serial0) M ain.cpp:

#include <pollserial.h>
pollserial pserial;

What do I have to do to use the port obd.cpp pserial?

¿?

#ifndef OBDUART
#include <pollserial.h>
pollserial pserial;
#define OBDUART pserial
#endif

Alone with or duplicate definition errors.