Visual Studio 2022 GDExtension C++ ".lib" binding error

[kone9]

Godot version

4.2 stable

System information

windows 11, intel i5 10ma, rx 6600 xt,godot 4.2 stable

Issue description

Compile GDextension with Visual studio 2022, I can run godot, but it does not compile correctly, it seems that there is a problem and incompatibility with the .lib generated with the binding in godot-cpp

libgodot-cpp.windows.template_debug.x86_64.lib(error_macros.windows.template_debug.x86_64.obj) : error LNK2038: mismatch detected for '_ITERATOR_DEBUG_LEVEL': value '0' doesn't match value '2' in register_types.obj

Steps to reproduce

in windows 11
install visual studio 2022 with libraries, python, scons and git.

Download this template project that is fully configured and press F5, you will see that it loads the game from godot, but it does not compile
https://gitlab.com/kone9/visual-studio-godot-engine-gdextension-cpp-template

try to generate the .lib in godot-cpp with different configurations,
For example, I already tried this one and it doesn't work.

scons platform=windows custom_api_file=gdextension\extension_api.json generate_bindings=yes

The issue is that Visual Studio does not need scons to generate the DLL, but to generate the .lib you have to use scons. I don't know what the error would be, but it seems that there is a problem with the .lib generated with scons in godot-cpp

Minimal reproduction project

I created this project where it is explained in detail how to configure Visual Studio with GDextension, but for some reason it doesn't work. I also want to clarify that I did this configuration previously with GDnative and it did work, although obviously the includes were different.
Please look at this project carefully because it contains all the configurations in visual studio 2022 in detail and it is an example of a downloadable template that should be able to be used anywhere.
Open the project with visual studio 2022 stable version

https://gitlab.com/kone9/visual-studio-godot-engine-gdextension-cpp-template

[AThousandShips]

Did you compile both with disable_extensions=True?

[kone9]

GDNative isn't supported in 4.2, do you mean GDExtension?

Yes, sorry... sorry I was wrong... The problem is with GDextension.

[kone9]

disable_extensions=True

Where do I add that? When do I generate the bindings in godot cpp? I mean, it would be like this.

scons platform=windows custom_api_file=gdextension\extension_api.json generate_bindings=yes disable_extensions=True

[AThousandShips]

Yes, I'm unsure exactly what's wrong here, will look when I have time 🙂

[kone9]

Yes, I'm unsure exactly what's wrong here, will look when I have time 🙂

It seems that there is a problem with the generation of the binding that generates an incompatibility with VScode. I leave a mini video showing the problem
https://youtu.be/JhllJgHI1nM

[kone9]

Yes, I'm unsure exactly what's wrong here, will look when I have time 🙂

Try generating the bindings in the following way. It still doesn't work.

scons platform=windows custom_api_file=gdextension\extension_api.json generate_bindings=yes disable_extensions=true

[kone9]

I also want to say that I have this project running in VScode for both Windows and Linux Ubuntu and it works very well there.
I only need Visual Studio.

https://gitlab.com/kone9/godot-engine-4.2-template-gdextension-with-vscode-windows-11
https://gitlab.com/kone9/godot-engine-4.2-template-gdextension-with-vscode

[kone9]

Will it be possible to generate the .lib directly from Visual Studio without using Scons???

[kone9]

Yes, I'm unsure exactly what's wrong here, will look when I have time 🙂

When trying to solve this problem, please try creating the .lib with visual studio. Esaa without using scons, to document the entire GDnative compilation procedure with Visual Studio. This would bring many advantages and a pre-configured project could be created that is updated in each version of godot. It would be much easier than using Scons, at least in Windows.

[crashfort]

#1319 fixes this. You have to build godot-cpp with scons but the extension dll you can use Visual Studio for.

[kone9]

godotengine/godot-cpp#1319 fixes this. You have to build godot-cpp with scons but the extension dll you can use Visual Studio for.

There is no possibility of compiling the static library directly with Visual Studio? I know that in Linux the process is easy, but in Windows it would be much simpler to have a template with Visual Studio and be able to generalize both the DLL and the static library... I'm going Let's try this and see if it works for me

scons platform=windows -j15 custom_api_file="..\Godot_v4.2-rc2_win64\extension_api.json" target=template_release use_static_cpp=no optimize=speed debug_symbols=yes

But I insist, you don't know how to configure visual studio to generate the static library directly from visual studio?

[crashfort]

I mean I don't see the point in using VS for godot-cpp since you only have to do that once, ever. For your actual extension dll you can use a VS vcxproj without scons, that's what I do because I don't want to use scons for anything.

[kone9]

I mean I don't see the point in using VS for godot-cpp since you only have to do that once, ever. For your actual extension dll you can use a VS vcxproj without scons, that's what I do because I don't want to use scons for anything.

You have to download scons, python and make configurations that waste your time. Many people have already told me that they are not encouraged with C++ godot or that it is not worth the effort to learn the procedure with GDextension and C++ because the configuration is a lot of work, I mean apart from that there is the whole issue of including libraries, configuring the dubug with visual studio, etc..

That's why I think the ideal would be to have a repository with a Visual Studio 2022 project that already contains the Godot-Cpp and even a built-in godot engine editor so that by simply touching a button you can generate the bindings and with another button run the game or the direct editor from visual studio..

[kone9]

I mean I don't see the point in using VS for godot-cpp since you only have to do that once, ever. For your actual extension dll you can use a VS vcxproj without scons, that's what I do because I don't want to use scons for anything.

You know, I just compiled with the command you sent in debug mode, but it still doesn't work, I'm testing it in this project.

scons platform=windows custom_api_file="gdextension\extension_api.json" target=template_debug use_static_cpp=no optimize=debug debug_symbols=yes

https://gitlab.com/kone9/visual-studio-godot-engine-gdextension-cpp-template

[crashfort]

You need to rebuild godot-cpp with that change applied, not run the commands that are specified there. Of course you will get the same error.