[CMake] Object Library into Shared library

[j s]

Hello,

According to:
http://www.cmake.org/Wiki/CMake/Tutorials/Object_Library

it is possible to compile OBJECT libraries for use in other targets, as 
of CMake 2.8.8.  Unfortunately it doesn't document how to make the 
OBJECT position independent.  Is the proper cross platform method to set 
the POSITION_INDEPENDENT_CODE property ON on the OBJECT library?  What 
is the minimum version required to set the POSITION_INDEPENDENT_CODE 
property on an OBJECT library.

Thanks,