Date: Thu, 8 Apr 1999 14:24:47 -0400 (EDT) From: Brian Feldman <green@unixhelp.org> To: Bruce Evans <bde@zeta.org.au> Cc: jdp@polstra.com, current@FreeBSD.ORG Subject: Re: /sys/boot, egcs vs. gcc, -Os Message-ID: <Pine.BSF.4.05.9904081424230.41086-100000@janus.syracuse.net> In-Reply-To: <199904080436.OAA11412@godzilla.zeta.org.au>
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On Thu, 8 Apr 1999, Bruce Evans wrote:
> >> Actually, they don't. Compiler-specific options can be put in ${CC}.
> >> Perhaps they even should be.
> >
> >But in this case, we want "-Os" (egcs) or "-O2" (gcc) only for
> >building boot -- not for everything. It could be parameterized with
> >make macros like "OPT_SMALL" and "OPT_FAST" in the *.mk files, I
> >suppose.
>
> "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.
>
> BTW, boot2/Makefile uses "CFLAGS=" to override any previous definition
> of CFLAGS. This may break `make world' by removing -nostdinc.
Why don't we have a -= operator in make(1)?
>
> Bruce
>
>
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