[CMake] Difficulties with component search by "FindBoost"

[SF Markus Elfring]

> Boost.Spirit is headers-only library, so there is no binary library supplied.

Thanks for your response.


> It might be not obvious from the manual [1], but COMPONENTS is dedicated
> to request lookup for the Boost libraries which are built as binary components.

Can this documentation be improved?


> [1] http://cmake.org/cmake/help/v2.8.11/cmake.html#module:FindBoost

Should this interface know when an error message is unnecessary in my use case?

Regards,
Markus