Hi, I just had an unpleasant experience with -ffast-math and GCC 4.1.1
(it borked my LDAP authentication on several systems which worked with
the same CFLAGS as long as GCC 3.4.6 was used).
There is a lot of material out there about CFLAGS and Gentoo (google
returns 387000 pages) but what's
Mike Frysinger wrote the following on 30.09.2006 23:48 :
[...]
`man gcc` always seemed fine to me
in fact, lets read the -ffast-math section:
-ffast-math
This option should never be turned on by any -O option since it can
result in incorrect output for programs
Here's an updated draft. I included most of your remarks and added some
notes on append-flags/filter-flags. I'll probably submit it to Ulrich
around the end of the week.
--- Draft BEGIN ---
section
titleCFLAGS/title
body
p
Being able to tune the CFLAGS is part of one of the core principles of
Josh Saddler wrote the following on 03.10.2006 18:11 :
(...)
Lionel
Uh, Gentoo-wiki does not get linked.
Are there many trying to link to the Gentoo Wiki in official
documentation? It seems guns are warm and devs quick to jump to
conclusions (re-read the title and the previous discussion on
Daniel Ostrow wrote the following on 03.10.2006 19:22 :
Ok...lets try this...
Gentoo-wiki does not now nor will it ever get linked to from official
Gentoo media, documentation, or anything else within the www.gentoo.org
namespace...
It seemed to me that although it is hosted in the
Chris Gianelloni wrote the following on 03.10.2006 22:46 :
On Tue, 2006-10-03 at 19:49 +0200, Lionel Bouton wrote:
It seemed to me that although it is hosted in the www.gentoo.org space
the GWN isn't official Gentoo stuff.
The GWN is staffed entirely by developers. We have non
Ciaran McCreesh wrote the following on 03.10.2006 14:26 :
On Tue, 03 Oct 2006 02:56:42 +0200 Lionel Bouton
[EMAIL PROTECTED] wrote:
| Being able to tune the CFLAGS is part of one of the core principles of
| Gentoo: let the user be in control.
What? No it isn't.
Maybe it depends on what
Here's the third version of the draft, wiki-free and with less sugar
too. More warnings.
Thanks again for the input.
--- Draft BEGIN ---
section
titleCFLAGS/title
body
p
Being able to tune the CFLAGS is part of one of the core principles of
Gentoo: let the user be in control. Being in control
Duncan wrote the following on 09.10.2006 12:51 :
Dice R. Random [EMAIL PROTECTED] posted
[EMAIL PROTECTED], excerpted
below, on Sun, 08 Oct 2006 18:30:56 -0700:
For example c-ffast-math/c is added by the xmame/xmess ebuilds on
most architectures even tho you SHOULD NOT put it in your
Ciaran McCreesh wrote the following on 04.03.2007 21:26 :
On Sun, 4 Mar 2007 13:14:14 -0700 Daniel Robbins
[EMAIL PROTECTED] wrote:
It was helpful to have some things confirmed by people other than
Ciaran.
So now you're calling me a liar too? [...]
I followed this discussion
Richard Brown wrote the following on 10.08.2007 21:44 :
Yes, see:
http://devmanual.gentoo.org/eclass-writing/index.html#export-functions
Hits the very spot I was aiming for, many thanks.
Lionel
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