[bug #35062] Add lazy evaluation of prerequisites

[Paul D. Smith]

Update of bug #35062 (project make):

                  Status:                    None => Wont Fix               
             Open/Closed:                    Open => Closed                 

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Follow-up Comment #1:

Sorry but this would completely change make in a way that's massively
incompatible... and confusing.

For example, today if you say:

PRE = foo
all: $(PRE)
PRE = bar
all: $(PRE)

foo bar: ; @echo $@


You'll see "foo" then "bar".  With your suggested change you would see just
"bar" (no "foo").

This is such a complete abrogation of the historical behavior of make that I
don't think it's appropriate, even as an option (especially since it would be
an enormous amount of work to implement).

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