Bug 102418

Summary:	Possible typo in CFLAGS for 32 bit gentoo for the AMD64 processor
Product:	[OLD] Docs-user	Reporter:	Steve <sjm>
Component:	Gentoo Linux x86 Installation Guide	Assignee:	Docs Team <docs-team>
Status:	RESOLVED INVALID
Severity:	normal
Priority:	High
Version:	unspecified
Hardware:	AMD64
OS:	Linux
URL:	http://www.gentoo.org/doc/en/handbook/2005.1/handbook-x86.xml?part=1&chap=5
Whiteboard:
Package list:		Runtime testing required:	---

Description Steve 2005-08-13 12:01:57 UTC

Every post I have read in the forums regarding correct CFLAGS for a 32 bit
gentoo install suggests using athlon-xp for an AMD64 processor.  In the handbook
the developers recommend the following:

CFLAGS="-march=athlon-xp -pipe -O2"   # AMD64 users use march=k8

My question is about the first comment... Should AMD64 users be using k8 in
their CFLAGS on 32 bit installs?  Who is correct? the forum users or the
documentation?

Reproducible: Always
Steps to Reproduce:
1.
2.
3.

Comment 1 Shyam Mani (RETIRED) gentoo-dev

2005-08-13 13:00:26 UTC

According to the amd64 devs, the docs are correct not the forums.

Setting the -march to athlon-xp on a amd64 box will disable flags like -msse2
whereas k8 won't.

Marking INVALID.