[CMake] Recover help text from option() ?

[Ellon Paiva]

Hi there,

I was wondering if there was a way to recover the help text passed to an 
option to be used later below in the same CMake script.

I saw that the help text goes into a comment before the option on the 
CMakeCache.txt, but is it stored in any recoverable variable during the 
script processing ?

Best,

Ellon