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

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

warn = -pedantic -Wall
dbg = -g
opt = -O2
def = -DGAMENAME=\"megatris\" -DVERSTR=\"01\" -D__NO_CTYPE
inc = -I. -Isrc -Isrc/libc

tool_prefix = m68k-linux-gnu-

CC = $(tool_prefix)gcc
AS = $(tool_prefix)as
LD = $(tool_prefix)ld
OBJCOPY = $(tool_prefix)objcopy

CFLAGS = -m68000 -ffreestanding -fno-builtin $(warn) $(dbg) $(opt) $(def) $(inc)
CPPFLAGS = $(def)
ASFLAGS = -m68000 $(inc)
LDFLAGS = -T megadrive.ld -print-gc-sections -L/usr/lib/gcc-cross/m68k-linux-gnu/6 -lgcc

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

$(elf): $(obj)
	$(LD) -o $@ $(obj) -Map link.map $(LDFLAGS)

#tun_data.h: tunnel.ppm
#	cat $< | tools/ppm2md tun_ >$@

-include $(dep)

%.d: %.c
	@$(CPP) $(CFLAGS) $< -MM -MT $(@:.d=.o) >$@

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

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

.PHONY: run
run: $(bin)
	gens-sdl $<

.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