[CMake] Distinguishing between source and binary packages with CPack?

[SF Markus Elfring]

Hello,

Software package formats like DEB and RPM can help to distinguish
the provided contents between source and binary files.
https://wiki.debian.org/SourcePackage
http://www.rpm.org/max-rpm/s1-rpm-miscellania-srpms.html

How can I achieve a corresponding distinction with CPack?
http://www.cmake.org/Wiki/CMake:Component_Install_With_CPack#Ideas_for_Future_Development

Regards,
Markus