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Re: Portable Use of Variables


From: Nick Bowler
Subject: Re: Portable Use of Variables
Date: Mon, 27 Oct 2014 13:11:52 -0400
User-agent: Mutt/1.5.22 (2013-10-16)

On 2014-10-26 22:15 +0200, fr33domlover wrote:
> I'm a bit confused about all the expressive features and ways to use makefile
> variables, so just to be sure -
> 
> http://www.gnu.org/software/make/manual/html_node/Substitution-Refs.html
> 
> Are these uses of variables portable, or should a portable Makefile.am use 
> only
> the plain $(var) form without the tricks?

The first form of expansion on that page, $(var:.a=.b), should be OK.
They are standard in POSIX and work on all make implementations that I
know of.

The version with % characters is not portable.

Hope that helps,
-- 
Nick Bowler, Elliptic Technologies (http://www.elliptictech.com/)



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