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From: des@des.no (Dag-Erling =?iso-8859-1?Q?Sm=F8rgrav?=)
To: Dmitry Pryanishnikov <dmitry@atlantis.dp.ua>
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Date: Mon, 14 Aug 2006 14:47:19 +0200
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Cc: src-committers@freebsd.org, Alexander Leidinger <netchild@freebsd.org>,
	cvs-src@freebsd.org, cvs-all@freebsd.org, Ruslan Ermilov <ru@freebsd.org>,
	Kris Kennaway <kris@obsecurity.org>
Subject: Re: cvs commit: src ObsoleteFiles.inc
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des@des.no (Dag-Erling Sm=F8rgrav) writes:
> Dmitry Pryanishnikov <dmitry@atlantis.dp.ua> writes:
> > So ':>>${FILE}' isn't the same as 'touch ${FILE}' for existing files.
> when the purpose is only "to ensure that a file exists" as I wrote
> above, this does not matter.

besides, in most cases where touch is used in src/sys, what is really
needed is truncate (or :>):

opt_ppp.h:
        touch ${.TARGET}
.if ${PPP_BSDCOMP} > 0
        echo "#define PPP_BSDCOMP ${PPP_BSDCOMP}" >> ${.TARGET}
.endif
.if ${PPP_DEFLATE} > 0
        echo "#define PPP_DEFLATE ${PPP_DEFLATE}" >> ${.TARGET}
.endif
.if ${PPP_FILTER} > 0
        echo "#define PPP_FILTER ${PPP_FILTER}" >> ${.TARGET}
.endif
.endif

if for some reason this target should run several times, opt_ppp.h
will end up with multiple definitions of the same macros.

DES
--=20
Dag-Erling Sm=F8rgrav - des@des.no