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Message-ID:	<40856F98.4020605@morganstanley.com>
Date:	Tue, 20 Apr 2004 14:44:40 -0400
From:	Noel Yap <Noel DOT Yap AT morganstanley DOT com>
Organization:	Morgan Stanley
User-Agent:	Mozilla Thunderbird 0.5 (Windows/20040212)
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To:	"Paul D. Smith" <psmith AT gnu DOT org>
Cc:	Dave Korn <dk AT artimi DOT com>, cygwin AT cygwin DOT com, bug-make AT gnu DOT org
Subject:	Re: Cygwin make thinks a statement can be neither true nor false....
References:	<16517 DOT 17736 DOT 2088 DOT 461431 AT lemming DOT engeast DOT baynetworks DOT com> <NUTMEGuRQUnLuLtIxbO0000052a AT NUTMEG DOT CAM DOT ARTIMI DOT COM> <16517 DOT 28015 DOT 712309 DOT 634072 AT lemming DOT engeast DOT baynetworks DOT com>
In-Reply-To:	<16517.28015.712309.634072@lemming.engeast.baynetworks.com>

Paul D. Smith wrote:

> %% "Dave Korn" <dk AT artimi DOT com> writes:
> The problem is that in many makefiles you tend to get a lot of "false
> positives".
> 
> For example, many makefiles leave certain variables to be set by the
> user, like CPPFLAGS or CFLAGS.  If you do that in your makefiles, and
> the user has no reason to set them, then you'll get lots o' warnings.
> 
> You can work around this with various GNU make-specific fanciness, but
> most developers don't bother.

The largest problem I've seen is when using $(call) on a macro that's not defined (either because the makefile that defines the macro hasn't been included, or there's a typo at the call site).  A separate option that would either warn or error upon trying 
to call undefined macros would be great.  What do you think?

Noel


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