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Atmosphere/fusee/fusee-secondary/Makefile

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Makefile
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rwildcard = $(foreach d, $(wildcard $1*), $(filter $(subst *, %, $2), $d) $(call rwildcard, $d/, $2))
ifeq ($(strip $(DEVKITARM)),)
$(error "Please set DEVKITARM in your environment. export DEVKITARM=<path to>devkitARM")
endif
include $(DEVKITARM)/base_tools
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name := fusee-secondary
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dir_source := src
dir_build := build
dir_exosphere := ../../exosphere
dir_thermosphere := ../../thermosphere
dir_stratosphere := ../../stratosphere
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dir_out := out
ARCH := -march=armv4t -mtune=arm7tdmi -marm
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ASFLAGS := -g $(ARCH)
# For debug builds, replace -O2 by -Og and comment -fomit-frame-pointer out
CFLAGS = \
$(ARCH) \
-g \
-O2 \
-fomit-frame-pointer \
-ffunction-sections \
-fdata-sections \
-std=gnu11 \
-Werror \
-Wall \
-fstrict-volatile-bitfields \
-DFUSEE_STAGE2_SRC
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LDFLAGS = -specs=linker.specs -g $(ARCH)
bundled = $(dir_exosphere)/out/exosphere.bin $(dir_thermosphere)/out/thermosphere.bin \
$(dir_stratosphere)/loader/loader.kip $(dir_stratosphere)/pm/pm.kip \
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$(dir_stratosphere)/sm/sm.kip $(dir_stratosphere)/boot/boot_100.kip $(dir_stratosphere)/boot/boot_200.kip
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objects = $(patsubst $(dir_source)/%.s, $(dir_build)/%.o, \
$(patsubst $(dir_source)/%.c, $(dir_build)/%.o, \
$(call rwildcard, $(dir_source), *.s *.c))) \
$(dir_build)/bundled.o
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define bin2o
bin2s $< | $(AS) -o $(@)
endef
.PHONY: all
all: $(dir_out)/$(name).bin
.PHONY: clean
clean:
@rm -rf $(dir_build)
@rm -rf $(dir_out)
$(dir_out)/$(name).bin: $(dir_build)/$(name).elf
@mkdir -p "$(@D)"
$(OBJCOPY) -S -O binary $< $@
$(dir_build)/$(name).elf: $(objects)
$(LINK.o) $(OUTPUT_OPTION) $^
$(dir_build)/bundled.o: $(bundled)
@bin2s $^ | $(AS) -o $(@)
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$(dir_build)/%.o: $(dir_source)/%.c
@mkdir -p "$(@D)"
$(COMPILE.c) $(OUTPUT_OPTION) $<
$(dir_build)/%.o: $(dir_source)/%.s
@mkdir -p "$(@D)"
$(COMPILE.c) -x assembler-with-cpp $(OUTPUT_OPTION) $<