From owner-freebsd-questions Fri Mar 2 17:54:58 2001 Delivered-To: freebsd-questions@freebsd.org Received: from guru.mired.org (okc-65-26-235-186.mmcable.com [65.26.235.186]) by hub.freebsd.org (Postfix) with SMTP id 2181637B719 for ; Fri, 2 Mar 2001 17:54:55 -0800 (PST) (envelope-from mwm@mired.org) Received: (qmail 23831 invoked by uid 100); 3 Mar 2001 01:54:54 -0000 From: Mike Meyer MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <15008.20206.326726.264137@guru.mired.org> Date: Fri, 2 Mar 2001 19:54:54 -0600 To: "Charles Burns" Cc: questions@freebsd.org Subject: Re: Several questions that I can't seem to find on answers to on Google In-Reply-To: <77975203@toto.iv> X-Mailer: VM 6.89 under 21.1 (patch 14) "Cuyahoga Valley" XEmacs Lucid X-face: "5Mnwy%?j>IIV\)A=):rjWL~NB2aH[}Yq8Z=u~vJ`"(,&SiLvbbz2W`;h9L,Yg`+vb1>RG% *h+%X^n0EZd>TM8_IB;a8F?(Fb"lw'IgCoyM.[Lg#r\ Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Charles Burns types: > 2) How on earth do I get rid of Sendmail? Whenever I delete sendmail, it > breaks build world. Furthermore, why is it installed by default? It seems to > be deeply imbedded in FreeBSD. I would think that, if anything, FreeBSD > would install Qmail but I would really greatly prefer if I had the option of > not installing any MTA. > I have tried disabling sendmail in rc.conf. Actually, it's not deeply embedded at all. Some MTA needs to be provided with the system, and sendmail has historically been the one. Changing it is very easy these days - just install the one you want (probably in the ports tree) and then edit mailer.conf(5) to enable the one you want, and rc.conf(5) to make sure that sendmail isn't started by default. Changing the default MTA is a very political issue. The license for qmail means it'll probably never be the default. Postfix seems more likely, as that's what's running at freebsd.org. > 3) It seems that randomely when I make a new kernel, when it initializes > IPFW and says "(stuff), IPDIVERT DISABLED, default to deny, etc., etc.) but > the kernel config file clearly has "OPTIONS IPDIVERT". Is another kernel > option conflicting with this? (I'll post a partial config file if needed) Hmm - OPTIONS? In upper case? That's not a valiid config line, it's a syntax error. Which would mean it isn't in the kernel. > 7) Has anyone had any problems with PGCC? > Note that I have noticed a general dislike for strong optimizations in the > FreeBSD community from reading web pages and the like. I like strong > optimizations, especially for important programs like gzip, bz2, gcc, and > ipfw. > I haven't used PGCC in a while. Last time I did, it failed to compiled > glibc2.1 on a linux system citing some completely esoteric error (not unlike > "malloc type lacks magic" that FreeBSD likes to tell me) The reason there's a general dislike for strong optimizations is that there's a general dislike of unstable code - and that's what you tend to get with strong optimizations. Especially if you're trying to write thread-safe (or, in the kernel, SMP-safe), code. If you want to use alternative compilers for code you're developing, that's cool. If you want answers to questions about why the system and/or ports aren't working, stay with the supported compilers and optimization levels. http://www.mired.org/home/mwm/ Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message