From owner-freebsd-amd64@FreeBSD.ORG  Tue Oct 11 16:16:31 2005
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Date: Wed, 12 Oct 2005 02:16:28 +1000 (EST)
From: Bruce Evans <bde@zeta.org.au>
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To: Claus Guttesen <kometen@gmail.com>
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Cc: freebsd-amd64@freebsd.org, Kris Kennaway <kris@obsecurity.org>
Subject: Re: /etc/make.conf flags for Intel
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On Tue, 11 Oct 2005, Claus Guttesen wrote:

>>>> /usr/share/examples/etc/make.conf is set to -O.
>>>
>>> The setting in <sys.mk> trumps this documentation file, but you're
>>> right, this should be updated there.  Could you please send a PR?
>>
>> The example is correct.  It shows how to change the default of "-O2
>> -fstrict-aliasing -pipe" to "-O -pipe".  It would be less than useful
>> to repeat the default in the examples or in /etc/make.conf.  ...
>
> So what your saying is that one should not override these values in
> make.conf but leave them commented out? Doing a buildworld without
> CFLAGS does indeed compile using -O2:

- Normally leave them out of the installed make.conf.
- Leave them commented out in examples/etc/make.conf.
- Add comments to examples/etc/make.conf to emphasize that they are
   only examples and that use of some of them, especially CFLAGS, is
   problematic.

Bruce