Error Creating bindings with Scons

Hello:
I Have been tring to follow the GDNative C++ Example but i ran into some issues.

when runing command:

> scons platform=windows headers=../godot_headers generate_bindings=yes

i get this output:

> scons: Reading SConscript files ...
> scons: done reading SConscript files.
> scons: Building targets ...
> cl /Fosrc\core\AABB.obj /c src\core\AABB.cpp /TP /nologo /EHsc /D_DEBUG /MDd /I. /Igodot_headers /Iinclude /Iinclude\core
> AABB.cpp
> c:\godotengine\cpp_example\godot-cpp\include\core\String.hpp(4): fatal error C1083: Cannot open include file: 'gdnative/string.h': No such file or directory
> scons: *** [src\core\AABB.obj] Error 2
> scons: building terminated because of errors.
>
> C:\GodotEngine\cpp_example\godot-cpp>scons platform=windows headers=../godot_headers generate_bindings=yes
> scons: Reading SConscript files ...
> scons: done reading SConscript files.
> scons: Building targets ...
> cl /Fosrc\core\AABB.obj /c src\core\AABB.cpp /TP /nologo /EHsc /D_DEBUG /MDd /I. /Igodot_headers /Iinclude /Iinclude\core
> AABB.cpp
> c:\godotengine\cpp_example\godot-cpp\include\core\String.hpp(4): fatal error C1083: Cannot open include file: 'gdnative/string.h': No such file or directory
> scons: *** [src\core\AABB.obj] Error 2
> scons: building terminated because of errors.

I got the same result using MinGW instead of MVSC. And the string.h file is in the path. what im doing wrong?