#---------------------------------------------------------------------------------
.SUFFIXES:
#---------------------------------------------------------------------------------

.SECONDARY:

ifeq ($(strip $(DEVKITARM)),)
$(error "Please set DEVKITARM in your environment. export DEVKITARM=<path to>devkitARM")
endif

ifeq ($(strip $(DEVKITPRO)),)
$(error "Please set DEVKITPRO in your environment. export DEVKITPRO=<path to>devkitPro)
endif

include $(DEVKITARM)/base_rules

PORTLIBS	:=	$(PORTLIBS_PATH)/nds $(PORTLIBS_PATH)/armv5te

LIBNDS		:=	$(DEVKITPRO)/libnds

ifeq ($(strip $(GAME_TITLE)),)
GAME_TITLE	:=	game
endif

ifeq ($(strip $(GAME_SUBTITLE1)),)
GAME_SUBTITLE1	:=	test
endif

ifeq ($(strip $(GAME_SUBTITLE2)),)
GAME_SUBTITLE2	:=	Made by iProgramInCpp
endif

ifeq ($(strip $(GAME_ICON)),)
GAME_ICON      :=      $(DEVKITPRO)/libnds/icon.bmp
endif

ifneq ($(strip $(NITRO_FILES)),)
_ADDFILES	:=	-d $(NITRO_FILES)
endif

#---------------------------------------------------------------------------------
%.nds: %.arm9
	$(SILENTCMD)ndstool -c $@ -9 $< -b $(GAME_ICON) "$(GAME_TITLE);$(GAME_SUBTITLE1);$(GAME_SUBTITLE2)" $(_ADDFILES)
	@echo built ... $(notdir $@)

#---------------------------------------------------------------------------------
%.nds: %.elf
	ndstool -c $@ -9 $< -b $(GAME_ICON) "$(GAME_TITLE);$(GAME_SUBTITLE1);$(GAME_SUBTITLE2)" $(_ADDFILES) -h 0x200
	$(SILENTMSG) built ... $(notdir $@)

#---------------------------------------------------------------------------------
%.arm9: %.elf
	$(SILENTCMD)$(OBJCOPY) -O binary $< $@
	$(SILENTMSG) built ... $(notdir $@)

#---------------------------------------------------------------------------------
%.arm7: %.elf
	$(SILENTCMD)$(OBJCOPY) -O binary $< $@
	$(SILENTMSG) built ... $(notdir $@)

#---------------------------------------------------------------------------------
%.elf:
	$(SILENTMSG) linking $(notdir $@)
	$(SILENTCMD)$(LD)  $(LDFLAGS) $(OFILES) $(LIBPATHS) $(LIBS) -o $@


#---------------------------------------------------------------------------------
# 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
#---------------------------------------------------------------------------------
TARGET		:=	$(shell basename $(CURDIR))
BUILD		:=	build
SOURCES		:=	source
DATA		:=  
INCLUDES	:=	include
GRAPHICS	:=	data

#---------------------------------------------------------------------------------
# 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 -std=c++14

ASFLAGS	:=	-g $(ARCH)
LDFLAGS	=	-specs=ds_arm9.specs -g $(ARCH) -Wl,-Map,$(notdir $*.map)

#---------------------------------------------------------------------------------
# any extra libraries we wish to link with the project
#---------------------------------------------------------------------------------
LIBS	:= -lfat -lnds9
 
 
#---------------------------------------------------------------------------------
# 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	:=	$(addsuffix .o,$(BINFILES)) \
					$(PNGFILES:.png=.o) \
					$(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o)
 
export INCLUDE	:=	$(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \
					$(foreach dir,$(LIBDIRS),-I$(dir)/include) \
					$(foreach dir,$(LIBDIRS),-I$(dir)/include) \
					-I$(CURDIR)/$(BUILD)
 
export LIBPATHS	:=	$(foreach dir,$(LIBDIRS),-L$(dir)/lib)
 
.PHONY: $(BUILD) clean
 
#---------------------------------------------------------------------------------
$(BUILD):
	@[ -d $@ ] || mkdir -p $@
	@$(MAKE) --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile
 
#---------------------------------------------------------------------------------
clean:
	@echo clean ...
	@rm -fr $(BUILD) $(TARGET).elf $(TARGET).nds $(TARGET).ds.gba 
 
 
#---------------------------------------------------------------------------------
else
 
DEPENDS	:=	$(OFILES:.o=.d)
 
#---------------------------------------------------------------------------------
# main targets
#---------------------------------------------------------------------------------
$(OUTPUT).nds	: 	$(OUTPUT).elf
$(OUTPUT).elf	:	$(OFILES)
 
#---------------------------------------------------------------------------------
%.bin.o	:	%.bin
#---------------------------------------------------------------------------------
	@echo $(notdir $<)
	@$(bin2o)


#---------------------------------------------------------------------------------
%.s %.h	: %.png %.grit
#---------------------------------------------------------------------------------
	grit $< -fts -o$*

-include $(DEPENDS)
 
#---------------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------------