[CMake] CMAKE_CXX_COMPILER_VERSION quite a useful variable, right?

[Niels Dekker - address until 2018]

When CMake (current version: 3.2.2) generates project files for Visual 
Studio, it appears to define an undocumented variable that seems quite 
useful to me: CMAKE_CXX_COMPILER_VERSION. It appears to be the full 
compiler version. For example, for my VS2010 installation, 
CMAKE_CXX_COMPILER_VERSION is "16.0.40219.1", and for my VS2013 
installation, CMAKE_CXX_COMPILER_VERSION is "18.0.31101.0".

It seems useful to me to pass this CMake variable to the resource 
compiler, which does not have direct access to the macro's predefined 
by the C++ compiler (like _MSC_FULL_VER and _MSC_BUILD), for example 
by adding a "-D" flag:

add_definitions(-DMY_COMPILER_VERSION="${CMAKE_CXX_COMPILER_VERSION}")

Do you agree that it would be a good idea to add 
CMAKE_CXX_COMPILER_VERSION to the list of useful CMake variables, at 
http://www.cmake.org/Wiki/CMake_Useful_Variables ?


Kind regards, Niels
-- 
Niels Dekker
Scientific programmer at LKEB
Leiden University Medical Center