CMAKE - Problems with MSVC variable value

When you say that it works, does that mean that you also tried to compile the core?
According to cmake docs MSVC should be defined as true when the compiler is some version of VS.

If cmake running manually works, then probably the part that runs cmake needs to be tweaked in easybuild.
Seems that cmake cannot determine the compiler or determines it wrong or after the step that we are using it at somehow.

Probably need the easybuild source code for this one if it does not happen when running cmake on its own.

You were right. Actually it's working only the project creation, not the build of it cause it's missing the definition on WIN32, as it says.
 

It's probably something messed up in VS2015 installation. I'll try same behaviour in a Virtual machine with a fresh installation.

Using the Virtual Machine everything works well, so it's obviously a problem with VS2015 installed on my machine.
Just in case someone can't reinstall it, just as me, a solution should be to set up a MaNGOS Development Machine.

I'll close this ticket setting as "Not a Bug".