[CMake] Feature request: date command

[Daniel Pfeifer]

 Hi,

 There are a few places where I want to put the current date in 
 generated files. There is a 'date' command in Windows, in OSX and in 
 Linux. However, all three commands take different parameters to format 
 the output, so they cannot be uses in a portable manner. What I would 
 like to use is something like '${CMAKE_COMMAND} -E date -R'.

 Would it be possible to integrate this in CMake? Or is this out of the 
 scope?

 cheers, Daniel