URL
https://opencores.org/ocsvn/neorv32/neorv32/trunk
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# Compiler toolchain
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# Compiler toolchain
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RISCV_PREFIX ?= riscv32-unknown-elf-
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RISCV_PREFIX ?= riscv32-unknown-elf-
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# CPU architecture and ABI
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# CPU architecture and ABI
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MARCH = -march=rv32i
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MARCH = rv32i
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MABI = -mabi=ilp32
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MABI = ilp32
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# User flags for additional configuration (will be added to compiler flags)
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# User flags for additional configuration (will be added to compiler flags)
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USER_FLAGS ?=
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USER_FLAGS ?=
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# Relative or absolute path to the NEORV32 home folder
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# Relative or absolute path to the NEORV32 home folder
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# NEORV32 executable image generator
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# NEORV32 executable image generator
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IMAGE_GEN = $(NEORV32_EXG_PATH)/image_gen
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IMAGE_GEN = $(NEORV32_EXG_PATH)/image_gen
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# Compiler & linker flags
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# Compiler & linker flags
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CC_OPTS = $(MARCH) $(MABI) $(EFFORT) -Wall -ffunction-sections -fdata-sections -nostartfiles -mno-fdiv
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CC_OPTS = -march=$(MARCH) -mabi=$(MABI) $(EFFORT) -Wall -ffunction-sections -fdata-sections -nostartfiles -mno-fdiv
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CC_OPTS += -Wl,--gc-sections -lm -lc -lgcc -lc
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CC_OPTS += -Wl,--gc-sections -lm -lc -lgcc -lc
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# This accelerates instruction fetch after branches when C extension is enabled (irrelevant when C extension is disabled)
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# This accelerates instruction fetch after branches when C extension is enabled (irrelevant when C extension is disabled)
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CC_OPTS += -falign-functions=4 -falign-labels=4 -falign-loops=4 -falign-jumps=4
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CC_OPTS += -falign-functions=4 -falign-labels=4 -falign-loops=4 -falign-jumps=4
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CC_OPTS += $(USER_FLAGS)
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CC_OPTS += $(USER_FLAGS)
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