[CMake] Howto create a ProjectConfig.cmake tutorial

[Nico Schlömer]

Hi,

I just looked at
http://www.cmake.org/Wiki/CMake/Tutorials/How_to_create_a_ProjectConfig.cmake_file
to learn about exporting build information to the installation, and
started off by copying-and-pasting the contents of the tutorial to my
own project. It doesn't quite run through since there's this one
undefined variable ${INSTALL_DATA_DIR}. I have no idea what this is
actually supposed to be.
Anyone?

Cheers,
Nico