[CMake] Control Object code destination?

[Eric Torstenson]

Hi All,

I'm compiling my application on 4 platforms (linux 32 bit, linux 64 bit, 
windows and mac) I would like to use my linux source tree for all of 
them without having to recompile the whole thing each time I change from 
one platform to the next.

Is there a way to do that? I looked at CMAKE_ARCHIVE_OUTPUT_DIRECTORY, 
but it looks like it is the destination of the end products themselves, 
and not the intermediate stuff.

Thanks,

Eric