Nmake

CFLAGS = /W3 OBJS = main.obj math.obj all: calc.exe

Build:

main.obj: main.c math.h math.obj: math.c math.h CFLAGS = /W3 OBJS = main

clean: del $(OBJS) calc.exe

calc.exe: $(OBJS) link $(OBJS) /OUT:$@