src = $(wildcard src/*.c) $(wildcard src/dos/*.c)
ssrc = $(wildcard src/*.s) sinlut.s
obj = $(src:.c=.odj) $(ssrc:.s=.odj)
dep = $(src:.c=.d)
coff = rbench
bin = $(coff).exe
bin0 = $(coff)0.exe

ifeq ($(findstring COMMAND.COM, $(SHELL)), COMMAND.COM)
	host = dos
	LUTGEN = tools/lutgen.exe
else
	host = unix
	TC = i586-pc-msdosdjgpp-
	LUTGEN = tools/lutgen
endif

CC = $(TC)gcc
AS = $(TC)as

warn = -pedantic -Wall -Wno-deprecated-declarations
dbg = -g
opt = -O3 -ffast-math -fno-strict-aliasing
inc = -Isrc
def = -DNO_STDINT_H

CFLAGS = $(warn) $(dbg) $(opt) $(def) $(inc) -MMD
LDFLAGS = -Wl,-Map=link.map

$(bin): $(obj)
	$(CC) -o $@ $(obj) $(LDFLAGS)

$(bin0): $(bin)
	exe2coff $<
	copy /b \djgpp\bin\cwsdstr0.exe+$(coff) $@

sinlut.s: $(LUTGEN)
	$(LUTGEN) >$@

-include $(dep)
-include *.d

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

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

ifeq ($(host), dos)
.PHONY: clean
clean:
	del src\*.odj
	del src\dos\*.odj
	del *.odj
	del $(bin)
	del sinlut.s

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

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

$(LUTGEN): tools/lutgen.c
	gcc -o $@ $< -lm