###############################################################################
# Makefile for the project
###############################################################################

## General Flags
PROJECT = Mode5Demo
GAME= Mode5Demo
MCU = atmega644
TARGET = $(GAME).elf
CC = avr-gcc
INFO=../gameinfo.properties

## Kernel settings
KERNEL_DIR = ../../../kernel
KERNEL_OPTIONS  = -DVIDEO_MODE=5 -DINTRO_LOGO=1


## Options common to compile, link and assembly rules
COMMON = -mmcu=$(MCU)

## Compile options common for all C compilation units.
CFLAGS = $(COMMON)
CFLAGS += -Wall -gdwarf-2 -std=gnu99 -DF_CPU=28636360UL -O0 -fsigned-char -ffunction-sections
CFLAGS += -MD -MP -MT $(*F).o -MF dep/$(@F).d
CFLAGS += $(KERNEL_OPTIONS)


## Assembly specific flags
ASMFLAGS = $(COMMON)
ASMFLAGS += $(CFLAGS)
ASMFLAGS += -x assembler-with-cpp -Wa,-gdwarf2

## Linker flags
LDFLAGS = $(COMMON)
LDFLAGS += -Wl,-Map=$(GAME).map
LDFLAGS += -Wl,-gc-sections



## Intel Hex file production flags
HEX_FLASH_FLAGS = -R .eeprom

HEX_EEPROM_FLAGS = -j .eeprom
HEX_EEPROM_FLAGS += --set-section-flags=.eeprom="alloc,load"
HEX_EEPROM_FLAGS += --change-section-lma .eeprom=0 --no-change-warnings


## Objects that must be built in order to link
OBJECTS = uzeboxVideoEngineCore.o uzeboxCore.o uzeboxSoundEngine.o uzeboxSoundEngineCore.o uzeboxVideoEngine.o $(GAME).o

## Objects explicitly added by the user
LINKONLYOBJECTS =

## Include Directories
INCLUDES = -I"$(KERNEL_DIR)"

## Build
all: ../data/tiles.inc ../data/fonts6x8.inc $(TARGET) $(GAME).hex $(GAME).eep $(GAME).lss $(GAME).uze size

## Rebuild graphics ressource
../data/fonts6x8.inc: ../data/fonts6x8.png ../data/font.gconvert.xml
    gconvert ../data/font.gconvert.xml

../data/tiles.inc: ../data/tiles.png ../data/tiles.gconvert.xml
    gconvert ../data/tiles.gconvert.xml

## Compile Kernel files
uzeboxVideoEngineCore.o: $(KERNEL_DIR)/uzeboxVideoEngineCore.s
    $(CC) $(INCLUDES) $(ASMFLAGS) -c  $<

uzeboxSoundEngineCore.o: $(KERNEL_DIR)/uzeboxSoundEngineCore.s
    $(CC) $(INCLUDES) $(ASMFLAGS) -c  $<

uzeboxCore.o: $(KERNEL_DIR)/uzeboxCore.c
    $(CC) $(INCLUDES) $(CFLAGS) -c  $<

uzeboxSoundEngine.o: $(KERNEL_DIR)/uzeboxSoundEngine.c
    $(CC) $(INCLUDES) $(CFLAGS) -c  $<

uzeboxVideoEngine.o: $(KERNEL_DIR)/uzeboxVideoEngine.c
    $(CC) $(INCLUDES) $(CFLAGS) -c  $<

## Compile game sources
$(GAME).o: ../Mode5Demo.c
    $(CC) $(INCLUDES) $(CFLAGS) -c  $<

##Link
$(TARGET): $(OBJECTS)
     $(CC) $(LDFLAGS) $(OBJECTS) $(LINKONLYOBJECTS) $(LIBDIRS) $(LIBS) -o $(TARGET)

%.hex: $(TARGET)
    avr-objcopy -O ihex $(HEX_FLASH_FLAGS)  $< $@

%.eep: $(TARGET)
    -avr-objcopy $(HEX_EEPROM_FLAGS) -O ihex $< $@ || exit 0

%.lss: $(TARGET)
    avr-objdump -h -S $< > $@

%.uze: $(TARGET)
    -$(UZEBIN_DIR)packrom $(GAME).hex $@ $(INFO)

size: ${TARGET}
    @echo
    @avr-size -C --mcu=${MCU} ${TARGET}

## Clean target
.PHONY: clean
clean:
    -rm -rf $(OBJECTS) $(GAME).* dep/* *.uze


## Other dependencies
-include $(shell mkdir dep 2>/dev/null) $(wildcard dep/*)