CMake/QMake build dirs and "language support" settings

Hi,

I just realised that I needed a form of coupling between CMake or QMake build dirs (aka build profiles) and settings made via the "language support" plugin: custom defines and include paths.

For instance, QMake-based projects often require declaring the location of the Qt headers and of the build dir and do not pick up token definitions in the QMake "extra arguments (DEFINES+=foo). Reasons for having different build dirs could be building against different Qt versions, or with a different set of defines

Does such a possibility already exist as an undocumented feature?

Thanks,
R.