# zptr can use pointer compression of four byte aligned pointers, by right-
# shifting them by two and stuffing in an uint16_t.
# That only works on 32bit platforms, if total RAM size is <=2**18 and the
# start address is known.
ifneq (,$(filter arch_32bit,$(FEATURES_USED)))
  ifneq (,$(RAM_START_ADDR))
    ifneq (,$(RAM_LEN))
      # this handles 0xXXX and xxxK
      ifeq (1,$(shell echo $$(($(subst K,*1024,$(RAM_LEN)) <= 262144))))
        CFLAGS += -DZPTR_BASE=$(RAM_START_ADDR)
      endif
    endif
  endif
endif