GxEPD2-esphome/third_party/arduino_compat/pgmspace.h

#pragma once
// Stub for GxEPD2's own `#include <pgmspace.h>` (guarded by `#if
// defined(ESP32)`, which arduino_compat/Arduino.h defines - see there).
// pgm_read_byte is defined in Arduino.h, already included by the time any
// GxEPD2 file reaches this include; nothing else is needed here.