From owner-freebsd-toolchain@FreeBSD.ORG  Tue Nov  8 22:39:24 2011
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Date: Tue, 8 Nov 2011 22:39:24 +0000
From: Alexander Best <arundel@freebsd.org>
To: Warner Losh <imp@bsdimp.com>
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Cc: freebsd-toolchain@freebsd.org, Dimitry Andric <dim@freebsd.org>
Subject: Re: make cleanworld
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On Tue Nov  8 11, Warner Losh wrote:
> 
> On Nov 8, 2011, at 2:55 PM, Alexander Best wrote:
> > find -flags +XXX /usr/obj/usr/git-freebsd-head -exec chflags -R 0 {} +
> > rm/obj/usr/git-freebsd-head/*
> > 
> > that should only execute chflags(1) on those files with flags set.
> 
> THat's only faster if the entire directory tree says in the directory cache.  It isn't so much about chflags being called N times, but having to look at N files twice.

i think i got it now. ;) sorry for beeing so slow. i'll try to come up with a
patch for Makefile, which mentions this in the comment.

cheers.
alex

> 
> Warner