From: kagel AT quasar DOT bloomberg DOT com
Date: Tue, 16 Apr 1996 11:50:44 -0400
Message-Id: <9604161550.AA08452@quasar.bloomberg.com >
To: dj AT delorie DOT com
Cc: Broeker AT axp03 DOT physik DOT rwth-aachen DOT de, djgpp AT delorie DOT com
In-Reply-To: <199604160131.VAA15614@delorie.com> (dj@delorie.com)
Subject: Re: problems with makefiles
Reply-To: kagel AT dg1 DOT bloomberg DOT com

   Date: Mon, 15 Apr 1996 21:31:31 -0400
   From: dj AT delorie DOT com (DJ Delorie)

   > Yes, as pointed out above, there is something wrong: in a nutshell, you
   > should *never* have make build more than one file per rule. In the
   > case given above, I think this should be changed to something like:

   Amazingly enough, this works just fine with GNU make.  How else would
   you tell make that this one command produces these two files?

If my memory of the original message is accurate, his big problem is that he
produces both targets manually in the command list.  If either is out of date
then both get rebuilt.  Instead he should be producing '$@' the out of date
target.

BTW: Broeker should note that such a double target can only be used as a
subsidiary target (a dependency of a single primary target).  Only the first
target listed will be recognized as a primary target and the second not 'made'
at all if the multiple-target line is the first in the makefile.

-- 
Art S. Kagel, kagel AT quasar DOT bloomberg DOT com

A proverb is no proverb to you 'till life has illustrated it.  -- John Keats