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CROSS = arm-none-eabi-
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CC = gcc
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AS = as
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AR = ar
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OBJCOPY = objcopy
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MCUFLAGS = -mthumb -mcpu=cortex-m4
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AFLAGS = $(MCUFLAGS)
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CFLAGS = $(MCUFLAGS) -Iinclude -ffreestanding -Wall -Werror -Wextra
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OFLAGS = -O ihex
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CFILES = $(wildcard src/*.c)
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AFILES = $(wildcard src/*.s)
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OUTDIR = out
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OFILES = $(patsubst src/%.c, $(OUTDIR)/%.o, $(CFILES)) \
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$(patsubst src/%.s, $(OUTDIR)/%.asm.o, $(AFILES))
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HEX = main.hex
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all: $(HEX)
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$(HEX): $(OFILES)
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@echo " LINK " $(HEX)
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@$(CROSS)$(OBJCOPY) -B arm -I binary -O elf32-littlearm initrd.img out/initrd.img.o
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@$(CROSS)$(CC) $(CFLAGS) -T link.ld out/*.o -o out/main.elf
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@$(CROSS)$(OBJCOPY) $(OFLAGS) out/main.elf $(HEX)
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$(OUTDIR)/%.o: src/%.c
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@echo " CC " $<
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@$(CROSS)$(CC) $(CFLAGS) -c $< -o $@
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$(OUTDIR)/%.asm.o: src/%.s
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@echo " AS " $<
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@$(CROSS)$(AS) $(AFLAGS) -c $< -o $@
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clean:
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@echo " CLEAN"
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@rm -rf out/*
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