tech-pkg: Re: new feature for bmake: read-only variables

Subject: Re: new feature for bmake: read-only variables
To: None <tech-pkg@NetBSD.org>
From: Alan Barrett <apb@cequrux.com>
List: tech-pkg
Date: 09/02/2005 10:57:10

On 2005年9月02日, Roland Illig wrote:
> >Do you still need the block style when working with targets anyway? You
> >can just use ".READONLY: VAR VAR2" all the time.
> 
> http://mail-index.netbsd.org/tech-pkg/2005/08/25/0004.html
> 
> Yes, I do. In that example I don't want to duplicate all the 
> TOOLS_PLATFORM.* names just for making them read-only.
It's easy to do that another way:
	TOOLS_PLATFORM_PAIRS+= cat /bin/cat
	TOOLS_PLATFORM_PAIRS+= chgrp /usr/bin/chgrp
	TOOLS_PLATFORM_PAIRS+= chmod /bin/chmod
	# etc...
	.for i j in ${TOOLS_PLATFORM_PAIRS}
	TOOLS_PLATFORM.${i} ?= ${j}
	.READONLY: ${i}
	.endfor
--apb (Alan Barrett)