solution to depend on cached set of variable values

[thutt]

Britton Kerin writes:
 > I've got vars like DEBUG_ENABLE only a big hairy pile of them at this
 > point, and I want make to rebuild everything when I give a different
 > set of them (including via command line) with my having
 > to remember to do clean first.
 > 
 > I can see how it might be done using .VARIABLES and a cache of some
 > sort but I wonder if anyone has already done this?
 > 

The book "Gnu Make Unleashed" has an example implementation of this topic.


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