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Date: Tue, 22 Jan 2008 11:17:05 -0800
From: "David O'Brien" <obrien@FreeBSD.org>
To: Ruslan Ermilov <ru@FreeBSD.org>
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X-Operating-System: FreeBSD 8.0-CURRENT
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Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org,
	"M. Warner Losh" <imp@bsdimp.com>
Subject: Re: cvs commit: src Makefile.inc1 src/tools/build Makefile
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On Tue, Jan 22, 2008 at 10:00:40PM +0300, Ruslan Ermilov wrote:
> How about if we restore the check whose aim was to avoid cluttering
> mailing lists with questions about upsupported source upgrades, but
> make it correspond to 6.0-RELEASE:
> 
> %%%
> Index: Makefile.inc1
> ===================================================================
> RCS file: /home/ncvs/src/Makefile.inc1,v
> retrieving revision 1.594
> diff -u -p -r1.594 Makefile.inc1
> --- Makefile.inc1	22 Jan 2008 15:57:57 -0000	1.594
> +++ Makefile.inc1	22 Jan 2008 18:58:35 -0000
> @@ -841,6 +841,10 @@ update:
>  # legacy: Build compatibility shims for the next three targets
>  #
>  legacy:
> +.if ${BOOTSTRAPPING} < 600034
> +	@echo "ERROR: Source upgrades from versions prior to 6.0 not supported."; \
> +	false
> +.endif

I see your point here.  Should I add this back?