Date: Sun, 01 May 2005 16:23:16 -0500 From: "Jeremy Messenger" <mezz7@cox.net> To: "Joe Marcus Clarke" <marcus@marcuscom.com> Cc: freebsd-gnome@freebsd.org Subject: Re: CPUTYPE and CFLAGS when building Gnome 2.10.1 on FreeBSD 5.4 Message-ID: <op.sp38c2pb9aq2h7@mezz.mezzweb.com> In-Reply-To: <1114981523.60197.29.camel@shumai.marcuscom.com> References: <20050501210230.20876.qmail@web50205.mail.yahoo.com> <1114981523.60197.29.camel@shumai.marcuscom.com>
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On Sun, 01 May 2005 16:05:23 -0500, Joe Marcus Clarke <marcus@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 -- mezz7@cox.net - mezz@FreeBSD.org FreeBSD GNOME Team http://www.FreeBSD.org/gnome/ - gnome@FreeBSD.org
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