Gentoo Archives: gentoo-amd64

From: Eduardo Schoedler <eschoedler@×××××××××××.br>
To: gentoo-amd64@l.g.o
Subject: Re: [gentoo-amd64] quadcore
Date: Wed, 26 Nov 2008 19:04:24
Message-Id: CBC5FF84052E4BC4B1B4784C8529CDDD@viaadmredesold
In Reply to: Re: [gentoo-amd64] quadcore by Beso
1 > 2008/11/26 Sebastian Klüsener <sebastian@×××××.de>:
2 >> I'd change that to 'march=amdfam10' or 'march=native' if your gcc is a
3 >> recent one. Recent means >=4.3.
4 >>
5 > please don't top post.
6 > second, what does march=native does?!
7 >
8 > --
9 > dott. ing. beso
10
11 Hi Beso.
12
13 http://gcc.gnu.org/onlinedocs/gcc-4.3.2/gcc/i386-and-x86_002d64-Options.html#i386-and-x86_002d64-Options
14
15 "native
16 This selects the CPU to tune for at compilation time by determining the
17 processor type of the compiling machine. Using -mtune=native will produce
18 code optimized for the local machine under the constraints of the selected
19 instruction set. Using -march=native will enable all instruction subsets
20 supported by the local machine (hence the result might not run on different
21 machines). "
22
23 Best Regards,
24 Eduardo.

Replies

Subject Author
Re: [gentoo-amd64] quadcore Branko Badrljica <brankob@××××××××××.com>