[INTERNAL, CMAKE MODULES] Using shared libraries

[jguidoux]

Actually gradle+cmake modules use static libraries automatically.
This is not the same for shared libraries.

Studies if it is a good way to use shared libraries or not.
If yes, what is the better way to use shared libraries ?
And what about a multi-module project which contain a project ('A')which should produce a shared library.
How an other module ('B') can use the 'B' project. ?