Unable to get custom C++ module to build following the docs

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Hello,

I was trying to port a custom FFT library, couldn’t get it to register with scons when running the build (already have successful builds running for Godot, so doesn’t seem to be the issue there)

I then paired it back to the basic example found at here

register_types.h

#include "modules/register_module_types.h"
void initialize_testing_module(ModuleInitializationLevel p_level);
void uninitialize_testing_module(ModuleInitializationLevel p_level);

register_types.cpp

#include "register_types.h"

#include "testing.h"

#include "core/object/class_db.h"

void initialize_testing_module(ModuleInitializationLevel p_level) {
	if (p_level != MODULE_INITIALIZATION_LEVEL_SCENE) {
		return;
	}
	ClassDB::register_class<Testing>();
}

void uninitialize_testing_module(ModuleInitializationLevel p_level) {
	if (p_level != MODULE_INITIALIZATION_LEVEL_SCENE) {
		return;
	}
	// Nothing to do here in this example.
}

testing.h

#pragma once

#include "core/object/ref_counted.h"

class Testing : Public RefCounted {
	GDCLASS(Testing, RefCounted);

	int count;

protected:
	static void _bind_methods();

public:
	void add(int p_value);
	void reset();
	int get_total() const;

	Testing();
}

testing.cpp

#include "testing.h"

void Testing::add(int p_value) {
	count += p_value;
}

void Testing::reset() {
	count = 0;
}

int Testing::get_total() const {
	return count;
}

void Testing::_bind_methods() {
	ClassDB::bind_method(D_METHOD("add", "value"), &Testing::add);
	ClassDB::bind_method(D_METHOD("reset"), &Testing::reset);
	ClassDB::bind_method(D_METHOD("get_total"), &Testing::get_total);
}

Testing::Testing() {
	count = 0;
}

SCSub

# SCsub

Import('env')

env.add_source_files(env.modules_sources, "*.cpp") # Add all cpp files to the build

config.py

# config.py

def can_build(env, platform):
    return True

def configure(env):
    pass

Am I missing something? Did using the name Testing alias something existing? I tried an alternate name and no avail there either.

Running scons inside the godot cloned root, with my added folders in godot/modules/mymodulename (Matching whatever the class registration is)

New to working with Godot, but not C++, although I’m unfamiliar with scons. When I logged a full clean build after deleting the bin and .dblite they never show up in the output for either my custom FFT module or the simple testing module folder.

2

Not sure what the problem may be, but the page you linked to with the module example has a note that says GDExtension is usually the preferable method to extend the Godot engine.

For a GDExtension simply go to the official template and follow the instructions. When using this template you’ll have the choice of cmake or scons to build the project with.

There’s also a video from GodotCon 2024, that goes over the summator example from the modules example as a gdextension instead.

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