From owner-freebsd-hackers@FreeBSD.ORG  Fri Oct 26 21:17:59 2012
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Date: Fri, 26 Oct 2012 23:17:50 +0200
From: Joerg Sonnenberger <joerg@britannica.bec.de>
To: freebsd-hackers@freebsd.org
Subject: Re: [CFT/RFC]: refactor bsd.prog.mk to understand multiple programs
 instead of a singular program
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On Fri, Oct 26, 2012 at 09:00:26PM +0100, Chris Rees wrote:
> :U -- with bmake has non-optional arguments, so for example:
> 
> ${VAR:U} - pmake behaviour
> 
> ${VAR:Uval} - make behaviour.
> 
> Would that be acceptable?  I can get a patch in if that's popular.

${VAR:U} is useful for bmake as well. For example, .if conditionals can
avoid explicit checks for defined and/or quoting that way.

Joerg