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1 # Cross-compiling (e.g., on Mac OS X, install arm-none-eabi-gcc with MacPorts)
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2 CROSSCOMPILE := arm-none-eabi-
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3
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4 CC = $(CROSSCOMPILE)gcc
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5 AS = $(CROSSCOMPILE)as
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6 LD = $(CROSSCOMPILE)ld
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7 OBJCOPY = $(CROSSCOMPILE)objcopy
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8 OBJDUMP = $(CROSSCOMPILE)objdump
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9
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10 CFLAGS = -march=armv6 -fno-pic -static -fno-builtin -fno-strict-aliasing -Wall -Werror -I. -g -O0
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11 LDFLAGS = -L.
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12 ASFLAGS = -march=armv6
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13
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14 LIBGCC = $(shell $(CC) -print-libgcc-file-name)
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15
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16 # host compiler
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17 HOSTCC_preferred = gcc
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18 define get_hostcc
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19 $(if $(shell which $(HOSTCC_preferred)),$(HOSTCC_preferred),"cc")
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20 endef
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21 HOSTCC := $(call get_hostcc)
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22
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23 # general rules
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24 quiet-command = $(if $(V),$1,$(if $(2),@echo $2 && $1, @$1))
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25
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26 LINK_BIN = $(call quiet-command,$(LD) $(LDFLAGS) \
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27 -T $(1) -o $(2) $(3) $(LIBS) -b binary $(4), " LINK $(TARGET_DIR)$@")
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28
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29 LINK_INIT = $(call quiet-command,$(LD) $(LDFLAGS) \
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30 $(1) -o $@.out $<, " LINK $(TARGET_DIR)$@")
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31 OBJCOPY_INIT = $(call quiet-command,$(OBJCOPY) \
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32 -S -O binary --prefix-symbols="_binary_$@" $@.out $@, " OBJCOPY $(TARGET_DIR)$@")
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33
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34 build-directory = $(shell mkdir -p build build/device build/lib)
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35
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36 build/%.o: %.c
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37 $(call build-directory)
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38 $(call quiet-command,$(CC) $(CFLAGS) \
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39 -c -o $@ $<," CC $(TARGET_DIR)$@")
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40
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41 AS_WITH = $(call quiet-command,$(CC) $(ASFLAGS) \
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42 $(1) -c -o $@ $<," AS $(TARGET_DIR)$@")
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43
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44 build/%.o: %.S
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45 $(call build-directory)
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46 $(call AS_WITH, )
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