Cargo Features

fgen has no features set by default.

[dependencies]
fgen = { version = "0.1.0", features = ["cc"] }
cc = cbindgen, libc

Affects fgen::interface

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](https://rust-lang.github.io/rfcs/3491-remove-implicit-features.html).

cbindgen build cc?

Enables cbindgen ^0.6.0

libc build cc?