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Re: What is wrong with this make file?
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From: |
Paul Smith |
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Subject: |
Re: What is wrong with this make file? |
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Date: |
Tue, 05 Feb 2013 09:20:52 -0500 |
On Tue, 2013-02-05 at 02:09 +0000, Hiebert, Darren (IS) wrote:
> I have examined the output of "make -dpr" and see that the makefile
> tries to evaluate the literal text of "$PREREQ" instead of the value
> of the variable.
If you want that kind of expansion you must declare
the .SECONDEXPANSION: special target in your makefile (before the rule).
See the GNU make manual section on secondary expansion:
http://www.gnu.org/software/make/manual/html_node/Secondary-Expansion.html