[Interest] private header paths and cmake

[René J.V. Bertin]

On Tuesday June 27 2017 21:36:17 Konstantin Tokarev wrote:
>Qt5PrintSupport_PRIVATE_INCLUDE_DIRS

My bad, bad example, that one exists indeed. But I cannot find the equivalents for these from a .pro file:

    accessibility_support-private clipboard_support-private theme_support-private \
    fontdatabase_support-private graphics_support-private cgl_support-private

Thanks,
R.