Gentoo Archives: gentoo-dev

From: Ryan Hill <dirtyepic@g.o>
To: gentoo-dev@l.g.o
Subject: [gentoo-dev] Re: Move x86/amd64 CPU extensions USE flags to a new USE_EXPAND variable
Date: Tue, 14 Dec 2010 00:37:21
Message-Id: 20101213184107.4b4d9996@gentoo.org
In Reply to: Re: [gentoo-dev] Re: Move x86/amd64 CPU extensions USE flags to a new USE_EXPAND variable by William Hubbs
1 On Mon, 13 Dec 2010 18:13:08 -0600
2 William Hubbs <williamh@g.o> wrote:
3
4 > I've been reading this thread, but I don't understand why we need to
5 > worry about this since the newer versions of gcc can figure it out automatically
6 > by using -march=native?
7
8 Absolutely, -march=native should be used if you aren't using distcc. This is
9 about setting CPU-based USE flags (mmx, sse, etc.).
10
11 > Does -mcpu also have a native option for those who need to use -mcpu?
12
13 I think native is limited to amd64, x86, alpha, and mips.
14
15
16 --
17 fonts, gcc-porting, it makes no sense how it makes no sense
18 toolchain, wxwidgets but i'll take it free anytime
19 @ gentoo.org EFFD 380E 047A 4B51 D2BD C64F 8AA8 8346 F9A4 0662

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