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List:       r-devel
Subject:    Re: [Rd] Makevars and Makeconf sequencing
From:       Simon Urbanek <simon.urbanek () r-project ! org>
Date:       2013-08-24 0:22:53
Message-ID: 3095AF57-EC53-4F58-BEF6-E2EAB87741F6 () r-project ! org
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On Aug 23, 2013, at 7:53 PM, Ross Boylan <ross@biostat.ucsf.edu> wrote:

> http://cran.r-project.org/doc/manuals/R-exts.html#Configure-and-cleanup
> near the start of 1.2.1 Using Makevars says
> 
> > There are some macros which are set whilst configuring the building of
> > R itself and are stored in R_HOME/etcR_ARCH/Makeconf. That makefile is
> > included as a Makefile after Makevars[.win], and the macros it defines
> > can be used in macro assignments and make command lines in the latter.
> > 
> I'm confused.  If Makeconf is included after Makevars, then how can
> Makevars use macros defined in Makeconf?
> 

Because regular (recursively expanded) variables in makefiles are evaluated lazily \
(i.e., when substituted).


> Or is the meaning only that a variable definition in Makeconf can be
> overridden in Makevars?
> 
> Ross Boylan
> 
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> R-devel@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
> 
> 

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