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Re: MAKE_RESTARTS design question

From: Paul D. Smith
Subject: Re: MAKE_RESTARTS design question
Date: Tue, 1 Aug 2006 17:48:14 -0400

%% "Frink, Alexander " <address@hidden> writes:

  fa> Why is MAKE_RESTARTS designed as is, i.e. empty before the first
  fa> restart, then 1, 2, ...?  Wouldn't it be better to set it to 0 for
  fa> the first iteration?  Then it would not be necessary to resort on
  fa> the literal check on the version number to test if it is available
  fa> at all.

I dunno; it never occurred to me.  In GNU make variables, an empty
variable false, while a variable with any value (even "0") is true.
It's not easy to do math in GNU make.  I guess I was anticipating people
would be more likely to do something like:

        ... do something different if we've restarted ...

Of course you could almost as easily use:

    ifeq ($(MAKE_RESTARTS),0)
        ... do something different if we've restarted ...

to get the same effect if your suggestion were followed.

It's just the way it was done...

 Paul D. Smith <address@hidden>          Find some GNU make tips at:            
 "Please remain calm...I may be mad, but I am a professional." --Mad Scientist

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