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Re: AC_SUBST and unnecessarily large make files

From: Ralf Wildenhues
Subject: Re: AC_SUBST and unnecessarily large make files
Date: Thu, 22 Jun 2006 06:56:50 +0200
User-agent: Mutt/1.5.11+cvs20060403


* Mr E_T wrote on Thu, Jun 22, 2006 at 05:32:07AM CEST:
> I have noticed that when creating a project with large numbers of Makefiles 
> that
> there are a large number of unnecessary variables.


> Would it not be better to create a list of required variables and then a list 
> of 
> optional variables - scan the for $(variable) ( not @variable@ ) 
> and
> then insert only the required ones ?

I think Automake-1.10 will have a method to have substituted variables
that do not end up in's.  (It's already in CVS, but AFAICS
it's unpublished at the moment.  Not sure if that is going to change.)

> While this may not be a problem with small projects - the overall effect for 
> a 
> large project is to slow the Makefile creation process.

There is also a plan medium-term to make use of Make include statements
eventually to factor out all the common assignments.  This will
definitely take a while though.  (And to use a faster substitution


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