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Date:      Tue, 3 Sep 2002 01:19:30 +1000 (EST)
From:      Bruce Evans <bde@zeta.org.au>
To:        Peter Wemm <peter@wemm.org>
Cc:        "David O'Brien" <obrien@FreeBSD.org>, <cvs-committers@FreeBSD.org>, <cvs-all@FreeBSD.org>
Subject:   Re: cvs commit: src Makefile src/usr.bin/make Makefile 
Message-ID:  <20020903011057.W3883-100000@gamplex.bde.org>
In-Reply-To: <20020902130609.1F5A52A893@canning.wemm.org>

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On Mon, 2 Sep 2002, Peter Wemm wrote:

> "David O'Brien" wrote:
> > On Sat, Aug 31, 2002 at 12:18:40AM -0700, Peter Wemm wrote:
> > [about -DBOOTSTRAPPING and newer warts]

> > I thought we were going to impliment these warts with some form of
> > __FreeBSD_version test -- so they don't impact source bases that don't
> > need them, and more importantly so it is documented the time range they
> > cover so we know when to remove them.
>
> Go for your life.  Personally, I think that this sort of stuff should be
> removed from critical bootstrap tools with extreme prejudice.

I hope you mean including the __FreeBSD_version wart.

> Next problem:  make has got /bin/sh hardcoded by absolute path.  This burns
> us during an 4.x->5.x upgrade when /bin/sh is replaced before make has
> finished running things and the freshly installed /bin/sh gets a SIGSYS on
> eaccess(2).  If that is solved, then we can avoid one reboot.

I have used a hacked test/test.c with a function named eaccess() since this
problem first bit me.  I sometimes boot old kernels that don't have eaccess(2).
Current kernels from 2 years ago still mostly work with current userlands
apart from this.  (Many sysctls and things like ps don't work.  More
interestingly, soft updates causes panics when a file is removed.)

Bruce


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