[CMake] providing library information, what's the cmake way

[Rolf Eike Beer]

> In KDE we have a macro MACRO_WRITE_BASIC_CMAKE_VERSION_FILE() which helps
> with
> creating a basic version-info file which should be installed along with
> the
> Config-file.
> It consists of MacroWriteBasicCMakeVersionFile.cmake and
> BasicFindPackageVersion.cmake.in which you can find in
> http://websvn.kde.org/trunk/KDE/kdelibs/cmake/modules/ .

I wonder why you use

get_filename_component(_currentListFileDir ${CMAKE_CURRENT_LIST_FILE} PATH)

in there instead of CMAKE_CURRENT_LIST_DIR.

Eike