[CMake] Using CMake for cross-compîling?

[Eric Noulard]

Let's say I want to cross-compile my Windows application/library
on my Linux box using a cross-gcc (like mingw)?

Is it possible to indicate to CMake that we will use
a cross compiler?

In order to avoid (for example) to get a mylib.so file
if we want a mylib.dll.

Does CMake support cross-compiling in any way?
If not is it planned?

-- 
Erk