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From: "Rodney W. Grimes" <rgrimes@gndrsh.aac.dev.com>
Message-Id: <199504220519.WAA00942@gndrsh.aac.dev.com>
Subject: Re: Any objection to adding a .undef(VARNAME) to make?
To: hsu@freefall.cdrom.com (Jeffrey Hsu)
Date: Fri, 21 Apr 1995 22:19:15 -0700 (PDT)
Cc: jkh@freefall.cdrom.com, hackers@freefall.cdrom.com
In-Reply-To: <199504220356.UAA02180@freefall.cdrom.com> from "Jeffrey Hsu" at Apr 21, 95 08:56:41 pm
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> 
> 	It sure would help if you read psd:12 from your 4.4 manual set if
> 	your going to do much more with Make.  On page 12-7 you will see
> 	#undef variable described.
> 
> 	Note that our make uses .undef, and I have tested it, and it works.
> 
> Why do we use . instead of #?  I've installed pmake on my system,
> but it's not a straight drop-in replacement for make due to this and
> other differences.
> 

I do not have an answer for this, it was something done at CSRG.  It would
be a major rework to change it though!

-- 
Rod Grimes                                      rgrimes@gndrsh.aac.dev.com
Accurate Automation Company                   Custom computers for FreeBSD