Date: Wed, 3 Mar 1999 11:29:23 -0500
Message-Id: <199903031629.LAA28097@envy.delorie.com>
X-Authentication-Warning: envy.delorie.com: dj set sender to dj AT envy DOT delorie DOT com using -f
From: DJ Delorie <dj AT delorie DOT com>
To: djgpp AT delorie DOT com
In-reply-to: <Pine.VMS.3.91-A.990303165859.62709A-100000@tigris.klte.hu>
	(message from Baraz Akos 950918 on Wed, 3 Mar 1999 17:15:33 +0100)
Subject: Re: a make problem
References:  <Pine DOT VMS DOT 3 DOT 91-A DOT 990303165859 DOT 62709A-100000 AT tigris DOT klte DOT hu>
Reply-To: djgpp AT delorie DOT com


Gnu make with gcc has a way of managing dependencies for include files
automatically.  See http://www.delorie.com/gnu/docs/make/make_43.html
or look for "Generating Dependencies Automatically" in "info make".

I think that would be a better solution than what you're attempting to
do below, which usually results in a list of explicit rules instead of
a handful of implicit rules.

Note that you can mix explicit rules with implicit ones, and make
will accumulate dependencies:

%.o : %.cpp
	gcc -c $*.cpp
one1.o : $(ONE_DEP)
one2.o : $(ONE_DEP)
two1.o : $(TWO_DEP)
two2.o : $(TWO_DEP)
two3.o : $(TWO_DEP)

> I've got a problem with makefile making.
> I'd like to compile a lot of target with different dependecies.
> 
> Got variables like this:
> 
> ONE_C = one1.cpp one2.cpp 
> ONE_DEP = x.h y.h
> 
> TWO_C = two1.cpp two2.cpp
> TWO_DEP = z.h x.h w.h
> 
> and I want to compile them by ONE rule, but $(%) doesn't work in place of 
> the deps.