Date: Wed, 6 May 2009 11:15:07 +0200 From: Mel Flynn <mel.flynn+fbsd.questions@mailing.thruhere.net> To: freebsd-questions@freebsd.org Cc: Anton Shterenlikht <mexas@bristol.ac.uk> Subject: Re: make - reassign variable using if-then ? Message-ID: <200905061115.07888.mel.flynn%2Bfbsd.questions@mailing.thruhere.net> In-Reply-To: <20090506083152.GA48658@mech-cluster238.men.bris.ac.uk> References: <20090506083152.GA48658@mech-cluster238.men.bris.ac.uk>
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On Wednesday 06 May 2009 10:31:53 Anton Shterenlikht wrote:
> I've this simple makefile:
>
> VAR=one
>
> all : main
>
> main :
> @echo ${.CURDIR}
> .if ${.CURDIR}
> @echo ${VAR}
> VAR=two
> @echo ${VAR}
> .endif
>
> When I output VAR second time, the value is still "one", and not the
> new value "two". Why?
Because it is expanded before being passed to the shell. Sh sees:
echo one
VAR=two
echo one
What are you really trying to accomplish?
--
Mel
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