46 lines
1.3 KiB
Makefile
46 lines
1.3 KiB
Makefile
ifeq ($(origin IDF_PATH),undefined)
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$(error You must "source esp-idf/export.sh" before building)
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endif
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COPROC_RESERVE_MEM ?= 8176
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SOC := esp32s3
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CROSS := riscv32-esp-elf-
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CC := $(CROSS)gcc
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STRIP := $(CROSS)strip
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CFLAGS := -g -Os -march=rv32imc -mdiv -fdata-sections -ffunction-sections
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#CFLAGS += -fvisibility=hidden
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CFLAGS += -isystem $(IDF_PATH)/components/ulp/ulp_riscv/include/
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CFLAGS += -isystem $(IDF_PATH)/components/soc/$(SOC)/include
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CFLAGS += -isystem $(IDF_PATH)/components/esp_common/include
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CFLAGS += -DCOPROC_RESERVE_MEM=$(COPROC_RESERVE_MEM)
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ifeq ($(SOC),esp32s3)
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CFLAGS += -DCONFIG_IDF_TARGET_ESP32S3
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endif
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ifeq ($(SOC),esp32s2)
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CFLAGS += -DCONFIG_IDF_TARGET_ESP32S2
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endif
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ifeq ($(origin USER_CFLAGS),undefined)
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CFLAGS += $(USER_CFLAGS)
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endif
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LDFLAGS := -Wl,-A,elf32-esp32s2ulp -nostdlib --specs=nano.specs --specs=nosys.specs -Wl,--gc-sections
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SRCS ?= ulp.c
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SRCS += $(IDF_PATH)/components/ulp/ulp_riscv/ulp_riscv_utils.c
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SRCS += $(IDF_PATH)/components/ulp/ulp_riscv/start.S
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LDFLAGS += -Wl,-T,link.ld
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.PHONY: default
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default: a.out-stripped
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a.out-stripped: a.out
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$(STRIP) -g -o $@ $<
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a.out: $(SRCS) | link.ld Makefile
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$(CC) $(CFLAGS) $^ -o $@ $(LDFLAGS)
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.PHONY: clean
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clean:
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rm -f a.out* link.ld
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link.ld: ulp.riscv.ld
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$(CC) -E -P -xc $(CFLAGS) -o $@ $<
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