csrc = $(wildcard src/*.c) $(wildcard src/libc/*.c)
asrc = $(wildcard src/*.s) $(wildcard src/libc/*.s)
aSsrc = $(wildcard src/*.S) $(wildcard src/libc/*.S)
obj = $(asrc:.s=-asm.o) $(aSsrc:.S=-asm.o) $(csrc:.c=.o)
dep = $(csrc:.c=.d) $(aSsrc:.S=-asm.d)

z80src = $(wildcard src/z80/*.asm)
z80obj = $(z80src:.asm=.z80)
z80bin = z80.bin

name = life
elf = $(name).elf
bin = $(name).bin

warn = -pedantic -Wall
dbg = -g
#opt = -O3
def = -D__NO_CTYPE
inc = -I. -Isrc -Isrc/libc

ARCH = m68k-elf
TC = $(ARCH)-

CC = $(TC)gcc
AS = $(TC)as
LD = $(TC)ld
OBJCOPY = $(TC)objcopy
OBJDUMP = $(TC)objdump

CFLAGS = -m68000 -ffreestanding -fno-builtin -fcommon $(warn) $(dbg) $(opt) $(def) $(inc) -MMD
CPPFLAGS = $(def)
ASFLAGS = -m68000 $(inc)
LDFLAGS = -T megadrive.ld -Wl,-print-gc-sections -nostdlib -lgcc

Z80AS = vasmz80_oldstyle
Z80ASFLAGS = -Fvobj
Z80LD = vlink
Z80LDFLAGS = -T z80.ld -b rawbin1


$(bin): $(elf)
	$(OBJCOPY) -O binary $< $@

$(elf): $(obj)
	$(CC) -o $@ $(obj) -Wl,-Map,link.map $(LDFLAGS)

$(z80bin): $(z80obj)
	$(Z80LD) -o $@ $(Z80LDFLAGS) $(z80obj)

disasm: $(elf)
	$(OBJDUMP) -D $< >$@

src/data-asm.o: src/data.s data/font8x8.img data/cellspr.img data/simbabg.tiles \
	data/simbafg.tiles data/simbafg.tmap data/floor.tiles data/floor.tmap
src/z80prog-asm.o: src/z80prog.s $(z80bin)

data/cellspr.img: data/cellspr.png

-include $(dep)

%-asm.o: %.s
	$(AS) -o $@ $(ASFLAGS) $<

%-asm.o: %.S
	$(CC) -o $@ $(ASFLAGS) -DASM -MMD -c $<

%.z80: %.asm
	$(Z80AS) -o $@ $(Z80ASFLAGS) $< >/dev/null

.PHONY: clean
clean:
	rm -f $(obj) $(elf) $(bin)
	rm -f $(z80obj) $(z80bin)

.PHONY: cleandep
cleandep:
	rm -f $(dep)

.PHONY: cleandata
cleandata:
	rm -f data/*.img data/*.tiles data/*.tmap data/*.cmap

.PHONY: run
run: $(bin)
	mednafen $<

.PHONY: copy
copy: $(bin)
	mount /media/usbmass && cp $(bin) /media/usbmass/$(bin)
	umount /media/usbmass

.PHONY: install
install: $(bin)
	mount /media/usbmass
	[ -f /media/usbmass/MEGA/MEGA.RBF ] || cp $(bin) /media/usbmass/MEGA/MEGA.BIN
	umount /media/usbmass

.PHONY: debug
debug: $(bin)
	$(TC)gdb $(elf)

# ---- tools ----
PNGDUMP = tools/pngdump/pngdump
JSON2TMAP = tools/json2tmap/json2tmap

$(PNGDUMP): tools/pngdump/main.c tools/pngdump/image.c tools/pngdump/quant.c
	$(MAKE) -C tools/pngdump

$(JSON2TMAP): tools/json2tmap/json2tmap.c
	$(MAKE) -C tools/json2tmap

%.tmap: %.json $(JSON2TMAP)
	$(JSON2TMAP) $< $@

%.tiles: %-tiles.png $(PNGDUMP)
	$(PNGDUMP) -o $@ -oc $(@:.tiles=.cmap) -T 8x8 $<

%.tiles: %.png $(PNGDUMP)
	$(PNGDUMP) -o $@ -oc $(@:.tiles=.cmap) -om $(@:.tiles=.tmap) -T 8x8 -D $<

%.img: %.png $(PNGDUMP)
	$(PNGDUMP) -o $@ -oc $(@:.img=.cmap) -T 8x8 $<