"examples/LCD_PCF8574/PCF8574/PCF8574.ino" is broken on Arduino MEGA 2560 R3

[realRobotix]

Hardware:

• Arduino MEGA 2560 R3
• 20x4 I2C LCD
• quad encoder (encA: 2, encB: 3, encBtn: 22)

1. Problem: neu-rah/PCINT doesn't compile
   Fix: https://forum.arduino.cc/t/help-understanding-and-fixing-int-mode-type-has-not-been-declared/1080621

2. Problem: Rotating the encoder still doesn't work, but pressing it does.
   Tried to do some simple debugging, but I have no idea how c++ works.

[cstoker2]

also experiencing this issue on a Leonardo.
Error messages:
`In file included from /Volumes/users/cameron/Documents/Arduino/libraries/PCINT_r-site.net/src/pcint.cpp:1:0:
/Volumes/users/cameron/Documents/Arduino/libraries/PCINT_r-site.net/src/pcint.cpp: In function 'void PCint(uint8_t)':
/Volumes/users/cameron/Documents/Arduino/libraries/PCINT_r-site.net/src/pcint.h:62:56: error: 'pcintPinMap' was not declared in this scope
#define pcintPinMapBank(slot) ((uint8_t*)((uint8_t*)pcintPinMap+((slot)<<3)))
^
/Volumes/users/cameron/Documents/Arduino/libraries/PCINT_r-site.net/src/pcint.cpp:44:24: note: in expansion of macro 'pcintPinMapBank'
const uint8_t* map=pcintPinMapBank(port);//get 8 bits pin change map
^~~~~~~~~~~~~~~
/Volumes/users/cameron/Documents/Arduino/libraries/PCINT_r-site.net/src/pcint.h:62:56: note: suggested alternative: 'pcintPinMapBank'
#define pcintPinMapBank(slot) ((uint8_t*)((uint8_t*)pcintPinMap+((slot)<<3)))
^
/Volumes/users/cameron/Documents/Arduino/libraries/PCINT_r-site.net/src/pcint.cpp:44:24: note: in expansion of macro 'pcintPinMapBank'
const uint8_t* map=pcintPinMapBank(port);//get 8 bits pin change map
^~~~~~~~~~~~~~~

exit status 1

Compilation error: exit status 1`