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Makefile
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#---------------------------------------------------------------------------------
.SUFFIXES:
#---------------------------------------------------------------------------------
ifeq ($(strip $(DEVKITARM)),)
$(error "Please set DEVKITARM in your environment. export DEVKITARM=<path to>devkitARM")
endif
include $(DEVKITARM)/ds_rules
#---------------------------------------------------------------------------------
# TARGET is the name of the output
# BUILD is the directory where object files & intermediate files will be placed
# SOURCES is a list of directories containing source code
# DATA is a list of directories containing data files
# INCLUDES is a list of directories containing header files
# SPECS is the directory containing the important build and link files
#---------------------------------------------------------------------------------
export TARGET := $(shell basename $(CURDIR))-arm
export BUILD ?= build
R_SOURCES :=
SOURCES := arm arm/video arm/storage \
arm/storage/fatfs arm/common arm/system
R_INCLUDES :=
INCLUDES := arm
DATA :=
#---------------------------------------------------------------------------------
# options for code generation
#---------------------------------------------------------------------------------
ARCH := -march=armv5te -mcpu=arm926ej-s -marm -mthumb-interwork -mbig-endian -mfloat-abi=soft
CFLAGS := -g -std=c11 -Wall -O3 \
-fomit-frame-pointer -ffunction-sections \
$(ARCH)
CFLAGS += $(INCLUDE) -DCAN_HAZ_IRQ -D_GNU_SOURCE -fno-builtin-printf -Wno-nonnull
CXXFLAGS := $(CFLAGS) -fno-rtti -fno-exceptions
ASFLAGS := -g $(ARCH)
LDFLAGS = -nostartfiles -g --specs=../stub.specs $(ARCH) -Wl,--gc-sections,-Map,$(TARGET).map \
-L$(DEVKITARM)/lib/gcc/arm-none-eabi/5.3.0/be -L$(DEVKITARM)/arm-none-eabi/lib/be
LIBS :=
#---------------------------------------------------------------------------------
# list of directories containing libraries, this must be the top level containing
# include and lib
#---------------------------------------------------------------------------------
LIBDIRS :=
#---------------------------------------------------------------------------------
# no real need to edit anything past this point unless you need to add additional
# rules for different file extensions
#---------------------------------------------------------------------------------
ifneq ($(BUILD),$(notdir $(CURDIR)))
#---------------------------------------------------------------------------------
export ROOTDIR := $(CURDIR)
export OUTPUT := $(CURDIR)/$(TARGET)
SOURCES := $(SOURCES) $(foreach dir,$(R_SOURCES), $(dir) $(filter %/, $(wildcard $(dir)/*/)))
INCLUDES := $(INCLUDES) $(foreach dir,$(R_INCLUDES), $(dir) $(filter %/, $(wildcard $(dir)/*/)))
export VPATH := $(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \
$(foreach dir,$(DATA),$(CURDIR)/$(dir))
export DEPSDIR := $(CURDIR)/$(BUILD)
CFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c)))
CPPFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.cpp)))
SFILES := $(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.S)))
BINFILES := $(foreach dir,$(DATA),$(notdir $(wildcard $(dir)/*.*)))
#---------------------------------------------------------------------------------
# use CXX for linking C++ projects, CC for standard C
#---------------------------------------------------------------------------------
ifeq ($(strip $(CPPFILES)),)
#---------------------------------------------------------------------------------
export LD := $(CC)
#---------------------------------------------------------------------------------
else
#---------------------------------------------------------------------------------
export LD := $(CXX)
#---------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------
export OFILES := $(addsuffix .o,$(BINFILES)) \
$(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.S=.o)
export INCLUDE := $(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \
$(foreach dir,$(LIBDIRS),-I$(dir)/include) \
-I$(CURDIR)/$(BUILD)
export LIBPATHS := $(foreach dir,$(LIBDIRS),-L$(dir)/lib)
.PHONY: $(BUILD) clean all
#---------------------------------------------------------------------------------
all: $(BUILD)
$(BUILD):
@[ -d $@ ] || mkdir -p $@
@$(MAKE) --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile
#---------------------------------------------------------------------------------
clean:
@echo clean ...
@$(MAKE) -C $(ROOTDIR)/arm-elfloader clean
@rm -fr $(BUILD) $(OUTPUT).elf $(OUTPUT)-strip.elf
#---------------------------------------------------------------------------------
else
DEPENDS := $(OFILES:.o=.d)
#---------------------------------------------------------------------------------
# main targets
#---------------------------------------------------------------------------------
ELFLOADER = $(ROOTDIR)/arm-elfloader/elfloader.bin
$(ROOTDIR)/fw.img: $(OUTPUT)-strip.elf $(ELFLOADER)
python3 $(ROOTDIR)/castify.py $(ELFLOADER) $< $@
$(OUTPUT)-strip.elf: $(OUTPUT).elf
$(STRIP) $< -o $@
$(OUTPUT).elf: $(OFILES)
$(ELFLOADER):
@$(MAKE) -C $(ROOTDIR)/arm-elfloader
-include $(DEPENDS)
#---------------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------------