"Ming Kin Lai" <[EMAIL PROTECTED]> writes:
> Suppose I have prog1.c prog2.c prog3.c prog4.c prog1.h prog2.h
> In my Makefile I have these:
>
> $(OBJ)= prog1.o prog2.o prog3.o prog4.o
> $(OBJ): %.o: %.c %.h
> $(CC) -c $< -o $@
>
> I do not want to explicitly write a separate rule for prog3 and prog4:
>
> ...
>
> That would be too awkward. Is there a better way?
If you don't mind using features from 3.81beta4 then you can do it like
this:
.SECONDEXPANSION:
$(OBJ): %.o: %.c $$(if $$(wildcard %.h),%.h)
$(CC) -c $< -o $@
hth,
-boris
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