Cargo Features

openssl-sys has no features set by default.

[dependencies]
openssl-sys = { version = "0.9.104", features = ["vendored", "unstable_boringssl", "bindgen"] }
vendored = openssl-src
unstable_boringssl = bssl-sys

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.

bssl-sys unstable_boringssl?
bindgen build implicit feature

Enables bindgen ^0.69.0

bindgen:

Automatically generates Rust FFI bindings to C and C++ libraries

Affects run_bindgen::run, run_bindgen::run_boringssl

openssl-src build vendored?