src = $(wildcard src/*.c)
ssrc = $(wildcard src/*.s)
asmsrc = $(wildcard src/*.asm)
obj = $(src:.c=.o) $(ssrc:.s=.o) $(asmsrc:.asm=.o)
dep = $(src:.c=.d)
bin = sbtest.exe

ifeq ($(findstring COMMAND.COM, $(SHELL)), COMMAND.COM)
	hostsys = dos
else
	hostsys = unix
	TOOLPREFIX = i586-pc-msdosdjgpp-
endif

inc = -Isrc
opt = -O3 -ffast-math -fno-strict-aliasing
dbg = -g
warn = -pedantic -Wall -Wno-unused-function -Wno-unused-variable

AS = $(TOOLPREFIX)as
CC = $(TOOLPREFIX)gcc
AR = $(TOOLPREFIX)ar
CFLAGS = $(warn) -march=pentium $(dbg) $(opt) $(inc)
LDFLAGS =

$(bin): $(obj)
	$(CC) -o $@ -Wl,-Map=ld.map $(obj) $(LDFLAGS)

%.o: %.asm
	nasm -f coff -o $@ $<

-include $(dep)

%.o: %.c
	$(CC) $(CFLAGS) -o $@ -c $<

%.d: %.c
	@echo "gen dep $< -> $@"; $(CPP) $(CFLAGS) $< -MM -MT $(@:.d=.o) >$@

.PHONY: clean
.PHONY: cleandep

ifeq ($(hostsys), dos)
clean:
	del src\*.o
	del $(bin)

cleandep:
	del src\*.d
else
clean:
	rm -f $(obj) $(bin)

cleandep:
	rm -f $(dep)
endif