1 |
On Sat, Sep 24, 2005 at 11:10:35PM +0100, Jonathan Wright wrote |
2 |
|
3 |
> however since that version -mcpu has been depreciated in favor for -mtune. |
4 |
|
5 |
I use -march, so that point is moot. |
6 |
|
7 |
> As for the mmx information, that's valid across all gcc versions. If |
8 |
> you specify -march=pentium4 and -mcpu=pentium4 as part of your |
9 |
> CFLAGS, -mmmx and -msse, etc., will be implied by the compiler, |
10 |
> and any programs built to take advantage of the extensions will be |
11 |
> able to do so. |
12 |
|
13 |
The docs for 3.4.X are a lot more detailed than 3.3.X docs. 3.3.6 |
14 |
docs say that -march implies -mcpu but don't say in so many words that |
15 |
certain values of -march imply -sse, etc. |
16 |
|
17 |
While we're talking about compilers and sparse documentation, I've got |
18 |
an AMD64 K8. The docs for an AMD64-bit install scared me off to 32-bit |
19 |
land. Later I found out that the 64-bit install docs are out-of-date |
20 |
and the problems they mention seem to have been solved. However, since |
21 |
I have things humming along, I don't really want to tear my install down |
22 |
and rebuild from scratch. One question... I'm running |
23 |
> CFLAGS="-O2 -pipe -fomit-frame-pointer -march=athlon -m3dnow -mmmx -msse -msse2 -mfpmath=sse" |
24 |
|
25 |
Is there a way to figure out if I can use a higher version of Athlon |
26 |
in my CFLAGS line in 32-bit mode? |
27 |
|
28 |
-- |
29 |
Walter Dnes <waltdnes@××××××××.org> |
30 |
My musings on technology and security at http://tech_sec.blog.ca |
31 |
-- |
32 |
gentoo-user@g.o mailing list |