fn main() -> Result<(), Box> { let protoc_path = protoc_bin_vendored::protoc_bin_path()?; std::env::set_var("PROTOC", protoc_path); let proto = "../../proto/iam.proto"; tonic_build::configure() .build_server(true) .build_client(true) .compile_protos(&[proto], &["../../proto"])?; println!("cargo:rerun-if-changed=../../proto/iam.proto"); Ok(()) }