[cmake-developers] Performance problem in tll-set-include-and-defines-requirements

[Stephen Kelly]

Stephen Kelly wrote:

> I haven't dug any deeper into why calling that method is so slow. I assume
> it is hitting slow code paths in the parser because of the '$' which are
> not part of variables, but are generator expressions.

Here's a patch you can apply to play with the parsing problem. Simply apply 
it and try to build any helloworld cmake project.
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