Compiling for Windows: Improve setup instructions

(cherry picked from commit 13e3a1985e)

development/compiling/compiling_for_windows.rst

@@ -17,8 +17,9 @@ For compiling under Windows, the following is required:
 - `MinGW-w64 <http://mingw-w64.org/>`__ with GCC can be used as an alternative to
   Visual Studio. Be sure to install/configure it to use the ``posix`` thread model.
 - `Python 3.5+ <https://www.python.org/downloads/windows/>`_.
-- `SCons 3.0 <https://www.scons.org/>`_ build system. If using Visual Studio 2019,
-  you need at least SCons 3.1.1.
+  **Make sure to enable the option to add Python to the ``PATH`` in the installer.**
+- `SCons <https://www.scons.org/>`_ build system. Using the latest release is
+  recommended, especially for proper support of recent Visual Studio releases.
 
 .. note:: If you have `Scoop <https://scoop.sh/>`_ installed, you can easily
           install MinGW and other dependencies using the following command::
@@ -40,13 +41,6 @@ For compiling under Windows, the following is required:
              For a general overview of SCons usage for Godot, see
              :ref:`doc_introduction_to_the_buildsystem`.
 
-Setting up Python
------------------
-
-First you need to install Python 3.5 or newer. Make sure to enable the option
-to add Python to the ``PATH`` in the Python installer. The SCons installer
-should then detect and use the existing Python installation.
-
 Setting up SCons
 ----------------
 
@@ -69,6 +63,10 @@ environment variable after installing it, then check again.
 You can do so by running the Python installer again and enabling the option
 to add Python to the ``PATH``.
 
+If SCons cannot detect your Visual Studio installation, it might be that your
+SCons version is too old. Update it to the latest version with
+``python -m pip install --upgrade scons``.
+
 .. _doc_compiling_for_windows_install_vs:
 
 Installing Visual Studio caveats