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Date:      Thu, 21 Nov 2002 14:36:08 -0800
From:      Kris Kennaway <kris@obsecurity.org>
To:        David Schultz <dschultz@uclink.Berkeley.EDU>
Cc:        John Baldwin <jhb@FreeBSD.ORG>, Terry Lambert <tlambert2@mindspring.com>, current@FreeBSD.ORG, "M. Warner Losh" <imp@bsdimp.com>, Ruslan Ermilov <ru@FreeBSD.ORG>
Subject:   Re: Why isn't NOCLEAN the default? (was: Re: Cross-Development with NetBSD)
Message-ID:  <20021121223608.GA20967@rot13.obsecurity.org>
In-Reply-To: <20021121220220.GB6062@HAL9000.homeunix.com>
References:  <3DDD2CB8.7E080912@mindspring.com> <XFMail.20021121143119.jhb@FreeBSD.org> <20021121220220.GB6062@HAL9000.homeunix.com>

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On Thu, Nov 21, 2002 at 02:02:20PM -0800, David Schultz wrote:
> Thus spake John Baldwin <jhb@FreeBSD.ORG>:
> > Make release is a very poor example b/c make release goes to great
> > efforts to create a clean-room environment for a release.  make
> > rerelease is quite helpful though and does do what you want to
> > restart a previous release. :)  Also, make buildworld -DNOCLEAN
> > isn't too shabby, though if I could do make TARGET_ARCH=3Dalpha
> > everything I would prefer that.
>=20
> I have long wondered why NOCLEAN isn't the default.  There seem to
> be a few cases where it doesn't DTRT for kernel builds, but it
> seems a bit conservative to make incremental world builds require
> that an undocumented variable be defined.  Any ideas?

It often causes problems during upgrades (but is usually fine when
just rebuilding a non-updated tree)

Kris

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