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Date:      Tue, 20 Dec 2011 09:08:57 -0500
From:      John Baldwin <jhb@freebsd.org>
To:        David Chisnall <theraven@freebsd.org>
Cc:        Doug Barton <dougb@freebsd.org>, Garrett Cooper <yanegomi@gmail.com>, Max Khon <fjoe@freebsd.org>, svn-src-all@freebsd.org, src-committers@freebsd.org, =?iso-8859-1?q?G=E1bor_K=F6vesd=E1n?= <gabor@t-hosting.hu>, Bruce Evans <brde@optusnet.com.au>, svn-src-head@freebsd.org, Warner Losh <imp@bsdimp.com>
Subject:   Re: svn commit: r228143 - in head: . share/mk tools/build/options
Message-ID:  <201112200908.57306.jhb@freebsd.org>
In-Reply-To: <8CCE4DDE-B203-42FF-A2FA-9106403DE077@FreeBSD.org>
References:  <201111291946.pATJkHMs064094@svn.freebsd.org> <20111220171740.X1005@besplex.bde.org> <8CCE4DDE-B203-42FF-A2FA-9106403DE077@FreeBSD.org>

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On Tuesday, December 20, 2011 5:05:49 am David Chisnall wrote:
> On 20 Dec 2011, at 06:20, Bruce Evans wrote:
> 
> > Don't be silly.  Building profiled libraries takes as much as 1 minute.
> > Many would not want to wait that long (if they noticed how long it takes).
> > This is not 1994 when building of profiling libraries was left in because
> > it only took an extra hour or or so.
> 
> One of the platforms I use has an 800MHz ARM processor.  Building LLVM (even 
a release build with asserts disabled and with all of the cross-compile 
targets disabled) is an overnight job.  On my main laptop, a release build of 
LLVM takes about 5 minutes.
> 
> Please don't assume that just because fast computers exist that they are the 
only things people are using.  A lot of the more interesting platforms these 
days are significantly slower.

And I doubt you do a build with a stock /etc/src.conf on such hardware either.
The defaults for src.conf should be for the common case, and in the common 
case profiled library builds are in the noise.  I do add WITHOUT_PROFILE to 
many of my machines in /etc/src.conf, but I still think they should be enabled 
by default.

-- 
John Baldwin



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