From: "Radosław Bułat" <radek.bulat@...>
Date: 2009-02-03T21:54:19+09:00
Subject: Re: Minor 1.8 <-> 1.9 performance comparison gotcha

On Mon, Feb 2, 2009 at 3:18 AM, M. Edward (Ed) Borasky
<znmeb@cesmail.net> wrote:
> cd <ruby-source>
> export CFLAGS='-O3 -march=athlon64 -mtune=athlon64'
> ./configure
> make

I do:
export CFLAGS="-O3 -march=native -mtune=native"
./configure
make

and see

gcc -O3 -march=native -mtune=native -O2 -g -Wall -Wno-parentheses (...)

It is ok if my options goes before default options to gcc? I wonder
what gcc will take, O2 or O3?


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Rados³aw Bu³at
http://radarek.jogger.pl - mój blog