On windows, why "scons: warning:" as with no versions of C++ and the subsequent C++14 not supported, right after the "./configure"

[lkdhy]

$ ./configure
scons: Reading SConscript files ...

Welcome to Mapnik...

Configuring build environment...

scons: warning: No version of Visual Studio compiler found - C/C++ compilers most likely not set correctly
File "D:\mapnik-v3.1.0\mapnik\SConstruct", line 1260, in <module>
Configuring on Windows in *release mode*...
Checking for pkg-config... no
Checking for freetype-config... no
Checking for dlfcn.h support ... no
Checking if compiler (c++) supports -std=c++14 flag... (cached) no
C++ compiler does not support C++14 standard (-std=c++14), which is required. Please upgrade your compiler

Very frustrating... Thanks very much.

[mathisloge]

Scons is not supported on windows. You have to use latest master and cmake

[lkdhy]

OK. So is the following what you mean by that, and how to solve it?