Cargo Features

grpcio-sys has no features set by default.

[dependencies]
grpcio-sys = { version = "0.13.0+1.56.2-patched", features = ["boringssl", "openssl", "openssl-vendored", "no-omit-frame-pointer", "bindgen"] }
boringssl = boringssl-src
openssl openssl-vendored?
openssl-vendored = openssl, openssl-sys
no-omit-frame-pointer

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.

openssl-sys openssl-vendored?
bindgen build implicit feature

Enables bindgen ^0.59.0

Because of rust-lang/cargo#5237, bindgen should not be upgraded util a minor or major release.

boringssl-src build boringssl?