[CMake] How best to capture the current Date/Time

[Michael Jackson]

I am trying to find a nice portable solution for generating version  
strings based on the date (seems reasonable). I even have my own c++  
code that can generate the proper string for me. The problem that I  
can not seem to get my head around is that I need to compile and run  
the program at cmake time which probably isn't really going to happen,  
at least easily.
   So. what is everyone else doing for this?

My main goal is to automate the generation of cmake code like the  
following:

set ( ${${Project_Name}_VERSION} "2009.03.10")

so that I can later use it for OS X bundle building.

On Unix systems I can easily spawn a "date" command to get what I need  
but what to do on windows?

Thanks for any suggestions.
_________________________________________________________
Mike Jackson                  mike.jackson at bluequartz.net
BlueQuartz Software                    www.bluequartz.net
Principal Software Engineer                  Dayton, Ohio