Date: Thu, 8 Apr 1999 14:36:24 +1000 From: Bruce Evans <bde@zeta.org.au> To: bde@zeta.org.au, jdp@polstra.com Cc: current@FreeBSD.ORG Subject: Re: /sys/boot, egcs vs. gcc, -Os Message-ID: <199904080436.OAA11412@godzilla.zeta.org.au>
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>> 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.
Bruce
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