From: Manuel McLure <manuel@mclure.org>
To: gentoo-user@lists.gentoo.org
Subject: [gentoo-user] CFLAGS for both AMD64 and Intel?
Date: Sat, 2 Dec 2017 23:23:10 -0800 [thread overview]
Message-ID: <CAGJrxsS5qkio1vi3CQj81AuX9VKWQrr9hzrSX7=U+KJM-7WobA@mail.gmail.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 1081 bytes --]
Here's the situation. I have a system that's been running for many years
with an Athlon 5050e processor. The system is built with
CFLAGS="-march=k8-sse3 -O2 -pipe -msse3"
CPU_FLAGS_X86="3dnow 3dnowext mmx mmxext sse sse2 sse3"
I have the possibility of upgrading the system to a first-generation Intel
Core i5 which should give a nice speed boost, but of course the Intel chip
doesn't understand 3dnow or 3dnowext, so I'll have to do a system rebuild
before I switch out the motherboard/processor. It seems pretty obvious that
I have to take "3dnow 3dnowext" out of CPU_FLAGS_X86, but what CFLAGS would
be recommended for a system that will still run with the AMD processor but
won't fall over when I switch to the Intel processor? Once I have the Intel
in place I can rebuild with options more suited for that chip, but I want
to make sure I don't end up in a catch-22 situation.
--
Manuel A. McLure WW1FA <manuel@mclure.org> <http://www.mclure.org>
...for in Ulthar, according to an ancient and significant law,
no man may kill a cat. -- H.P. Lovecraft
[-- Attachment #2: Type: text/html, Size: 1461 bytes --]
next reply other threads:[~2017-12-03 7:23 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-03 7:23 Manuel McLure [this message]
2017-12-03 7:40 ` [gentoo-user] CFLAGS for both AMD64 and Intel? Mike Gilbert
2017-12-03 8:08 ` Walter Dnes
2017-12-05 19:09 ` Manuel McLure
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CAGJrxsS5qkio1vi3CQj81AuX9VKWQrr9hzrSX7=U+KJM-7WobA@mail.gmail.com' \
--to=manuel@mclure.org \
--cc=gentoo-user@lists.gentoo.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox