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