#---------------------------------------------------------------------------------
# Clear the implicit built in rules
#---------------------------------------------------------------------------------
.SUFFIXES:
#---------------------------------------------------------------------------------
ifeq ($(strip $(DEVKITARM)),)
$(error "Please set DEVKITARM in your environment. export DEVKITARM=<path to>devkitARM)
endif

include $(DEVKITARM)/gba_rules

#---------------------------------------------------------------------------------
# TARGET is the name of the output, if this ends with _mb a multiboot image is generated
# 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
#---------------------------------------------------------------------------------
TARGET		:=	$(shell basename $(CURDIR))
BUILD		:=	build
SOURCES		:=	source
DATA		:=	
INCLUDES	:=	Krawall_Data
KRAWALLDATA	:=	Krawall_Data

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

CFLAGS	:=	-g -Wall -O3\
		-mcpu=arm7tdmi -mtune=arm7tdmi\
 		-fomit-frame-pointer\
		-ffast-math \
		$(ARCH)

CFLAGS	+=	$(INCLUDE)

CXXFLAGS	:=	$(CFLAGS) -fno-rtti -fno-exceptions -fno-rtti -fnoexceptions

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

export LIBKRAWALL	:=	$(DEVKITPRO)/Krawall

#---------------------------------------------------------------------------------
# any extra libraries we wish to link with the project
#---------------------------------------------------------------------------------
LIBS	:=	-lgba -lkrawall

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

#---------------------------------------------------------------------------------
# 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))

export DEPSDIR	:=	$(CURDIR)/$(BUILD)

#---------------------------------------------------------------------------------
# automatically build a list of object files for our project
#---------------------------------------------------------------------------------
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)/*.*)))

KRAWALLOBJ	:=	$(CURDIR)/$(KRAWALLDATA)/modules.o

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

export OFILES	:=  $(KRAWALLOBJ) \
					$(addsuffix .o,$(BINFILES)) \
					$(CPPFILES:.cpp=.o) \
					$(CFILES:.c=.o) \
					$(SFILES:.s=.o)

#---------------------------------------------------------------------------------
# build a list of include paths
#---------------------------------------------------------------------------------
export INCLUDE	:=	$(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \
			$(foreach dir,$(LIBDIRS),-I$(dir)/include) \
			-I$(CURDIR)/$(BUILD)

#---------------------------------------------------------------------------------
# build a list of library paths
#---------------------------------------------------------------------------------
export LIBPATHS	:=	$(foreach dir,$(LIBDIRS),-L$(dir)/lib)

export PATH	:=	$(PATH):$(LIBKRAWALL)/bin

.PHONY: $(BUILD) $(KRAWALLOBJ) clean

#------------ Cut these lines when you have the required files --------------------
default:
	@echo "This example requires files from the Krawall site."
	@echo "Please see the readme.txt in this folder for details"
#------------ Cut these lines when you have the required files --------------------


$(BUILD): $(KRAWALLOBJ)
	@[ -d $@ ] || mkdir -p $@
	@$(MAKE) --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile

all	: $(BUILD)
#---------------------------------------------------------------------------------
clean:
	@echo clean ...
	$(MAKE) -C $(KRAWALLDATA) clean
	@rm -fr $(BUILD) $(TARGET).elf $(TARGET).gba

$(KRAWALLOBJ):
	$(MAKE) -C $(KRAWALLDATA)

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

DEPENDS	:=	$(OFILES:.o=.d)

#---------------------------------------------------------------------------------
# main targets
#---------------------------------------------------------------------------------
$(OUTPUT).gba	:	$(OUTPUT).elf

$(OUTPUT).elf	:	$(OFILES)


-include $(DEPENDS)

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