Using any C++ library in Godot

Godot can load native C++ code through GDExtension, and the official godot-cpp bindings expose those libraries as regular engine classes that appear in the editor and can be used from GDScript. Building an extension requires compiling godot-cpp to match the target Godot version and compiling each external library for every platform you ship to. The article demonstrates this workflow by integrating the flecs ECS library to simulate 100,000 particles inside a Godot scene.