Cargo Features

esplugin-ffi has no features set by default.

[dependencies]
esplugin-ffi = { version = "2.1.2", features = ["ffi-headers"] }
ffi-headers = cbindgen

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.

cbindgen build ffi-headers?

Enables cbindgen ^0.8