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

[Stephen Kelly]

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.
> 

Hmm, I guess that will mean that 

 http://thread.gmane.org/gmane.comp.kde.devel.buildsystem/7584

will not be fixed, because KDE does not set the policy to NEW. To fix that, 
I would need to not do the expansion by default somehow. Is there any way to 
do that?

Thanks,

Steve.