[CMake] Compiler definitions for shared and static builds

[SF Markus Elfring]

> I try to generate a cmake project and want to
> build shared and dynamic libraries in one step.

Do you know answers from a wiki?
http://cmake.org/Wiki/CMake_FAQ#Can_I_build_both_shared_and_static_libraries_with_one_ADD_LIBRARY_command.3F

Regards,
Markus