[cmake-developers] INCLUDE_DIRECTORIES variable expansion (was: Performance problem in tll-set-include-and-defines-requirements)

[Stephen Kelly]

Stephen Kelly wrote:

> Brad King wrote:
> 
>> On 11/29/2012 07:34 AM, Stephen Kelly wrote:
>>> The patch that added that line is
>>> d899eb71b52616c9e3f3f5987f229619605e632b. It is apparently there for
>>> strict backwards compatibility, but it is not clear what exactly needs
>>> to be backwards compatible there. Any idea about that?
>> 
>> I don't know off the top of my head, Dave?
>> 
>> Stephen, please add the policy that the d899eb71 commit message
>> suggests.  Only bother with expansion if the policy is OLD or
>> not set.
> 
> Ok, I'll wait until we hear from Dave so I can write a well-informed
> commit message.

I guess I'll also hit a problem with the policy number to use. In my 
branches in next I introduce CMP0019 and CMP0020. 

For simplicity, can I make this CMP0021 and make the topic depend on the 
tll-set-include-and-defines-requirements topic?

Thanks,

Steve.