[CMake] Finding the intermediate output directory

[Reggie Burnett]

I am generating a custom command that will run during the pre-link
phase of a target and needs to process the .obj files that are
genreated.  I have written my processor but now need to pass in the
equivalent of $(IntDir) but I need this to work both with VS and nmake
so $(IntDir) is not a good solution.

I've tried a ton of different properties and can't get it.  Any ideas?

Thanks
Reggie