Subject: Re: Cygwin make thinks a statement can be neither true nor false....
From: Noel Yap <[email-masked]>
To: "Paul D. Smith" <[email-masked]>
Cc: Dave Korn <[email-masked]>, [email-masked], [email-masked]
Date: Tue, 20 Apr 2004 14:44:40 -0400

Paul D. Smith wrote:

> %% "Dave Korn" <[email-masked]> 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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