[CMake] Checking Disk space with Cmake

[avner cohen]

Hi all, 
 
I'm trying to set a rule/command/somthing, that will be executed with every build (even if cmake files are not touched) to check for DiskSpace available before starting the build.
In case of error, I'd like the build to exit ofcourse.
 
Any suggestions?
 
Regards,
 
        Avner Cohen.