Date: Sun, 4 Mar 2001 22:32:55 +0100 From: Wolfram Schneider <wosch@panke.de.freebsd.org> To: Nik Clayton <nik@FreeBSD.org> Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: www/en/docs Makefile Message-ID: <20010304223255.A1254@paula.panke.de.freebsd.org> In-Reply-To: <200102241804.f1OI4Ap34648@freefall.freebsd.org>; from nik@FreeBSD.org on Sat, Feb 24, 2001 at 10:04:10AM -0800 References: <200102241804.f1OI4Ap34648@freefall.freebsd.org>
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On 2001-02-24 10:04:10 -0800, Nik Clayton wrote:
> nik 2001/02/24 10:04:10 PST
>
> Modified files:
> en/docs Makefile
> Log:
> unset(1) returns '1' if the variable doesn't exist, so use the '||'
> operator rather than the '&&' operator.
this is hard to read shell code:
all install clean:
(cd ../../../doc/en_US.ISO_8859-1 && unset DESTDIR || ${MAKE} FORMATS=ht
ml-split DOCDIR=${DESTDIR}/data/docs ${.TARGET})
what does it mean?
1. unset the variable DESTDIR and execute the targets in the
directory ../../../doc/en_US.ISO_8859-1
2. build the targets in the directory ../../../doc/en_US.ISO_8859-1
only if the variable DESTDIR is not set
3. override the environment variable DESTDIR, but not the
make variable DESTDIR
4. ???
-Wolfram
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