#---------------------------------------------------------------------------------
# Clear the implicit built in rules
#---------------------------------------------------------------------------------
.SUFFIXES:
#---------------------------------------------------------------------------------
ifeq ($(strip $(DEVKITARM)),)
$(error "Please set DEVKITARM in your environment")
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
# INCLUDES is a list of directories containing extra header files
# DATA is a list of directories containing binary files embedded using bin2o
# GRAPHICS is a list of directories containing image files to be converted
#---------------------------------------------------------------------------------
TARGET   := NDS_Search_Launcher
BUILD    := build
SOURCES  := .
INCLUDES := .
DATA     :=
GRAPHICS :=

#---------------------------------------------------------------------------------
# options for code generation
#---------------------------------------------------------------------------------
ARCH := -mthumb -mthumb-interwork

CFLAGS := -g -Wall -O2 -march=armv5te -mtune=arm946e-s -fomit-frame-pointer -ffast-math $(ARCH)
CFLAGS += $(INCLUDE) -DARM9
CXXFLAGS := $(CFLAGS) -fno-rtti -fno-exceptions
ASFLAGS := -g $(ARCH)
LDFLAGS := -specs=ds_arm9.specs -g $(ARCH) -Wl,-Map,$(TARGET).map

#---------------------------------------------------------------------------------
# any extra libraries we wish to link with the project (order is important)
#---------------------------------------------------------------------------------
LIBS := -lnds9 -lfat

#---------------------------------------------------------------------------------
# list of directories containing libraries, this must be the top level containing
# include and lib
#---------------------------------------------------------------------------------
LIBDIRS := $(LIBNDS)

#---------------------------------------------------------------------------------
# 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 OUTPUT := $(CURDIR)/$(TARGET)

export VPATH := $(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \
                $(foreach dir,$(DATA),$(CURDIR)/$(dir)) \
                $(foreach dir,$(GRAPHICS),$(CURDIR)/$(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)/*.*)))
PNGFILES := $(foreach dir,$(GRAPHICS),$(notdir $(wildcard $(dir)/*.png)))

#---------------------------------------------------------------------------------
# use CXX for linking C++ projects, CC for standard C
#---------------------------------------------------------------------------------
ifeq ($(strip $(CPPFILES)),)
#---------------------------------------------------------------------------------
	export LD := $(CC)
#---------------------------------------------------------------------------------
else
#---------------------------------------------------------------------------------
	export LD := $(CXX)
#---------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------

export OFILES_BIN := $(addsuffix .o,$(BINFILES)) $(PNGFILES:.png=.o)
export OFILES_SOURCES := $(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o)
export OFILES := $(OFILES_BIN) $(OFILES_SOURCES)

export HFILES := $(addsuffix .h,$(subst .,_,$(BINFILES))) $(PNGFILES:.png=.h)

export INCLUDES := $(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir))
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 ...
	@rm -fr $(BUILD) $(TARGET).elf $(TARGET).nds $(TARGET).arm9 $(TARGET).dsi

#---------------------------------------------------------------------------------
else

#---------------------------------------------------------------------------------
# main targets
#---------------------------------------------------------------------------------
$(OUTPUT).nds: $(OUTPUT).elf
$(OUTPUT).elf: $(OFILES)

#---------------------------------------------------------------------------------
# The bin2o rule is used for binary files
#---------------------------------------------------------------------------------
%.bin.o: %.bin
	@echo $(notdir $<)
	@$(bin2o)

#---------------------------------------------------------------------------------
# The png2o rule is used for graphics
#---------------------------------------------------------------------------------
%.png.o: %.png
	@echo $(notdir $<)
	@$(png2o)

#---------------------------------------------------------------------------------
# This rule links in binary data with the .bin extension
#---------------------------------------------------------------------------------
%.bin.h: %.bin
	@echo $(notdir $<)
	@$(bin2s)

#---------------------------------------------------------------------------------
# This rule creates assembly files from graphics
#---------------------------------------------------------------------------------
%.s: %.png
	@echo $(notdir $<)
	@$(png2s)

#---------------------------------------------------------------------------------
# This rule compiles assembly source
#---------------------------------------------------------------------------------
%.o: %.s
	@echo $(notdir $<)
	@$(CC) -x assembler-with-cpp $(ASFLAGS) -c $< -o $@

-include $(DEPSDIR)/*.d

#---------------------------------------------------------------------------------
endif