If Marlin rewrites HardwareSerial, edit the main makefile
EXCLUDE_LIBS = HardwareSerial
as described in section 5.2.2 Exclude Librairies.
Now, if two libraries define the same constants or variables, conflict is unavoidable.
If Marlin rewrites HardwareSerial, edit the main makefile
EXCLUDE_LIBS = HardwareSerial
as described in section 5.2.2 Exclude Librairies.
Now, if two libraries define the same constants or variables, conflict is unavoidable.