[CMake] How to prevent CMake from escaping characters in custom target

[Tron Thomas]

I am trying to define an operation in a custom targt that varies on  
different platforms and take different command line arguments.  I  
tried defining the command using something like:

set(Command "command_name -flags")

Then using it like:

set_custom_target(TargetName ${SomeOtherCommand} COMMAND ${Command})

This resulting script that handles target will format the command like  
this:

command-name\ -flags

This causes an error when the command for the target are exectuted  
preventing the command from doing what it was intended to do.

What can be done to allow the command to be formatted properly in the  
target script?