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Date:      Sat, 24 Jan 2009 18:57:26 +0100
From:      Pojken Purken <pp@pp.dyndns.biz>
To:        FreeBSD Questions <freebsd-questions@freebsd.org>
Subject:   Re: default CFLAGS
Message-ID:  <497B5686.8050600@pp.dyndns.biz>
In-Reply-To: <20090124174357.4aafcf1a@gumby.homeunix.com>
References:  <Pine.LNX.4.64.0901241734020.6296@localhost>	<20090124124535.3006687c@gumby.homeunix.com>	<9a52b1190901240451i14dc544fm1c241d6f43fa897b@mail.gmail.com>	<20090124131629.1f9fabe4@gumby.homeunix.com>	<497B2536.7030907@pp.dyndns.biz> <20090124174357.4aafcf1a@gumby.homeunix.com>

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RW wrote:
> On Sat, 24 Jan 2009 15:27:02 +0100
> Morgan Wesström <freebsd-questions@pp.dyndns.biz> wrote:
> 
> 
>> The section "options enabled" will list them all. I usually only add
>> "-march=native" to my CFLAGS to enable a few more CPU specific
>> optimizations.
> 
> If you set CPUTYPE, -march is set to match, so setting -march=native
> should be redundant. OTOH a number of other make variables are defined
> from CPUTYPE, so if you set  -march=native, but not CPUTYPE you might
> miss some optimisations based on build options. 
> 
> I've no idea whether there are any such options, just that you're
> probably not going to do better than setting CPUTYPE, and leaving the
> rest alone.

I'm sorry I was unclear. I set CPUTYPE to native of course which is then
passed as -march=native to compiler.



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