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Date:      Mon, 7 May 2001 23:36:31 +0100 (WEST)
From:      Nuno Teixeira <nuno.mailinglists@pt-quorum.com>
To:        <freebsd-stable@FreeBSD.ORG>
Subject:   CFLAGS Optimization
Message-ID:  <20010507230417.F508-100000@gateway.bogus>

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Hello to all,

I came from Linux and at that time I used CFLAGS to optimize general
programs and linux kernel.

For example:

[i686]:
CFLAGS='-O9 -funroll-loops -ffast-math -malign-double -mcpu=pentiumpro
- -march=pentiumpro -fomit-frame-pointer -fno-exceptions'

[i586]:
CFLAGS='-O3 -mcpu=pentium -march=pentium -ffast-math -funroll-loops
- -fomit-frame-pointer -fforce-mem -fforce-addr -malign-double
- -fno-exceptions'

[i486]:
CFLAGS='-O3 -funroll-all-loops -malign-double -mcpu=i486 -march=i486
- -fomit-frame-pointer -fno-exceptions'

Can I use CFLAGS on FreeBSD too? If I put the CFLAGS on
/etc/defaults/make.conf, the kernel is affected by it?
Does CFLAGS can optimize programs and kernel on FreeBSD OS?


Thanks very much,


- --
Nuno Teixeira
Dir. Técnico
pt-quorum.com


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