[bug #17557] Add the analogue of ?= for singly expanded variables

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?17557>

                 Summary: Add the analogue of ?= for singly expanded
variables
                 Project: make
            Submitted by: None
            Submitted on: Monday 08/28/2006 at 20:17 UTC
                Severity: 3 - Normal
              Item Group: Enhancement
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
       Component Version: 3.80
        Operating System: None
           Fixed Release: None

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Details:

If one wants to simulate ?= for singly expanded variables, one has to write 

     ifeq ($(origin FOO), undefined)
       FOO := bar
     endif

and doing that repeatedly is abit of a pain...

I'm using 3.80, but reading the NEWS for 3.81 shows that this is not there
either.






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