On Fri, 9 Apr 1999, Bruce Evans wrote:
> >> "CC+=-Os" in individual Makefiles works about as well as "CFLAGS+=-Os" for
> >> adding flags. That's not very well. Removing unwanted additions is hard.
>
> >Why don't we have a -= operator in make(1)?
>
> Substitution can replace -= in may cases, e.g.:
>
> CC:= ${CC:S/-Os//}
>
> This is "hard" because it has to be coded in the makefile, while additions
> can be passed to make.
But what's wrong with having a specific -= operator? It would make code more
readable, which is a plus. It would be obvious for people to look for such
before resorting to substition rules.
>
> Bruce
>
>
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