Cargo Features

gdnative_bindings_generator has no features set by default.

gdnative_bindings_generator = { version = "0.11.3", features = ["debug", "ptrcall", "custom-godot"] }
custom-godot = which

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

which custom-godot?

Enables which ^4