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From: | Bob Friesenhahn |
Subject: | Re: GNU Make Extensions |
Date: | Wed, 10 Dec 2008 09:04:23 -0600 (CST) |
On Wed, 10 Dec 2008, Tom Browder wrote:
* Tom Browder wrote on Wed, Dec 10, 2008 at 01:38:53AM CET:Is it "legal" to use the "+=" operator in lieu of "\" when listing members of a variable in Makefile.am's?Yes. In this case, an Automake extension over portable make syntax, i.e., automake will flatten the += and 'make' won't ever see it.
I didn't really trust += in my own Automake makefiles since it was not really clear to me in what order the appending would occur and since I am also using Automake includes, the ordering might get changed in some bad way if the include order is changed. So for my makefiles I used additional variables with explicit concatenation, leaving nothing to chance.
Bob ====================================== Bob Friesenhahn address@hidden, http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
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