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

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

warn = -pedantic -Wall
dbg = -g
def = -DGAMENAME=\"tetris\" -DVERSTR=\"01\"

tool_prefix = m68k-linux-gnu-

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

CFLAGS = -m68000 -fno-builtin $(warn) $(dbg) $(opt) $(def)
CPPFLAGS = $(def)
ASFLAGS = -m68000 -Isrc
LDFLAGS = -T megadrive.ldscript -print-gc-sections

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

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

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

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