Gentoo Archives: gentoo-user

From: waltdnes@××××××××.org
To: Gentoo Users List <gentoo-user@l.g.o>
Subject: [gentoo-user] Former gcc "-march=atom" flag is now "-march=bonnell"
Date: Sun, 04 Sep 2016 17:48:31
Message-Id: 20160904174818.GA4737@waltdnes.org
1 https://gcc.gnu.org/gcc-4.9/changes.html states...
2
3 > Optimizing for other Intel microarchitectures have been renamed to
4 > -march=nehalem, westmere, sandybridge, ivybridge, haswell, bonnell.
5
6 My ancient Atom netbook identifies as "bonnell".
7
8 [aa1][waltdnes][~] gcc -c -Q -march=native --help=target | grep -i march=
9 -march= bonnell
10
11 According to a post on the Arch forum gcc ignores "-march=atom"...
12 https://bbs.archlinux.org/viewtopic.php?pid=1423395#p1423395 This is
13 very important if you're trying to optimize for an Atom netbook.
14
15 --
16 Walter Dnes <waltdnes@××××××××.org>
17 I don't run "desktop environments"; I run useful applications