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Date: Tue, 8 Mar 2011 00:45:29 +0200
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From: George Liaskos <geo.liaskos@gmail.com>
To: Alexander Best <arundel@freebsd.org>
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Cc: freebsd-current@freebsd.org
Subject: Re: r219385 build error.
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> either "native" or "nocona" (actually native should evaluate to nocona):
>
> touch _native_test.c && gcc -march=native -### _native_test.c
>
> should tell which -march and -mtune settings gcc assumes for "native".
>
> indeed there are some known problems with "native", but i think those are
> limited to architectures such as mips and arm. with i386 or amd64 "native"
> shouldn't cause any problems.
>
> i think core2 was always wrong to set in make.conf, because the base gcc simply
> does not support it. however so many people are trying to boost speed etc. by
> adding make.conf options they find scattered over the internet and on various
> linux dist wikis, that core2 was added as a workaround so people could use it
> (even though it wasn't supported).

I still don't understand how bsd.cpu.mk is going to handle "native" as
value to set CPUTYPE / MACHINE_CPU, or this is irrelevant?
Would it be better to use the following?

CPUTYPE?=nocona
NO_CPU_CFLAGS=yes
NO_CPU_COPTFLAGS=yes
CFLAGS+= -march=native

Thank you for your clarifications.