CPUTYPE and CFLAGS when building Gnome 2.10.1 on FreeBSD 5.4

[Jeremy Messenger]

On Sun, 01 May 2005 16:05:23 -0500, Joe Marcus Clarke  
<marcus at marcuscom.com> wrote:

> On Sun, 2005-05-01 at 22:02 +0100, Stuart Chalmers wrote:
>> Hi.
>>
>> I'm going to be rebuilding Gnome 2.10.1 from ports
>> once FreeBSD 5.4 is released.  It's all too easy to
>> get too involved with CPUTYPE and CFLAGS in
>> /etc/make.conf, but I was wondering what the general
>> opinion/experience on these was when building Gnome.
>
> Use the default, and you will not encounter any problems.
>
>>
>> I'm less concerned with CFLAGS as the 'standard'
>> advice seems to be that moving from -O to -02 has
>> little effect, but is changing CPUTYPE likely to make
>> much difference in performance?  Is there a 'highest'
>> (i.e. newest) CPUTYPE (say, i686) that I can use
>> before the Gnome ports start failing to build or
>> become unstable during runtime.
>
> Actually, changing CFLAGS to -O2 has a huge effect.  IF you do that
> (knowing it's unsupported), you will also have to add
> -fno-strict-aliasing.

I did a test with GNOME 2.10.x (400 ports installed) with -02  
-fno-strict-aliasing without CPUTYPE and I don't see any problem. I normal  
use the default, but only add with debug (ie: -g).

> As for CPUTYPE, I had luck with p3 in the past,
> but I have since reverted to the default.  All Pentium 4 types are known
> to cause problems as are some Athlon types.

I don't use CPUTYPE anymore now.. It causes few pain in ass.

Cheers,
Mezz

> Joe


-- 
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FreeBSD GNOME Team
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