[bug #26001] Evaluating eval expressions does not work for % type names

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?26001>

                 Summary: Evaluating eval expressions does not work for %
type names
                 Project: make
            Submitted by: None
            Submitted on: Wed 25 Mar 2009 11:42:30 PM UTC
                Severity: 3 - Normal
              Item Group: Enhancement
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
       Component Version: 3.81
        Operating System: POSIX-Based
           Fixed Release: None

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Details:


I have a situation where I have one to many compilation stage. Essentially, I
have one file that when "compiled"/loaded creates N number of output files. 

Now , I have a makefile that I want to set up a dependency where if any of
those compiled files were older than the original then I want to re-compile
the original file and remake the N files over again.

So, what I did was create a simple reverse mapping function using the define
...endef expression.

However, I cannot apply this in a rule . For instance


file%:  $(call reverseLookup,file%)

will fail.  although this will not

FILE1: $(call reverseLookup,file1)

file%: $(FILE1)

And this works as well

FILE1: $(call reverseLookup,file1)

file%: $(FILE1)
       @echo "Your dependency was $(call reverseLookup,$@)"











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