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// Copyright 2021 The BoringSSL Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
use std::env;
use std::path::Path;
use std::path::PathBuf;
// Keep in sync with the list in include/openssl/opensslconf.h
const OSSL_CONF_DEFINES: &[&str] = &[
"OPENSSL_NO_ASYNC",
"OPENSSL_NO_BF",
"OPENSSL_NO_BLAKE2",
"OPENSSL_NO_BUF_FREELISTS",
"OPENSSL_NO_CAMELLIA",
"OPENSSL_NO_CAPIENG",
"OPENSSL_NO_CAST",
"OPENSSL_NO_CMS",
"OPENSSL_NO_COMP",
"OPENSSL_NO_CT",
"OPENSSL_NO_DANE",
"OPENSSL_NO_DEPRECATED",
"OPENSSL_NO_DGRAM",
"OPENSSL_NO_DYNAMIC_ENGINE",
"OPENSSL_NO_EC_NISTP_64_GCC_128",
"OPENSSL_NO_EC2M",
"OPENSSL_NO_EGD",
"OPENSSL_NO_ENGINE",
"OPENSSL_NO_GMP",
"OPENSSL_NO_GOST",
"OPENSSL_NO_HEARTBEATS",
"OPENSSL_NO_HW",
"OPENSSL_NO_IDEA",
"OPENSSL_NO_JPAKE",
"OPENSSL_NO_KRB5",
"OPENSSL_NO_MD2",
"OPENSSL_NO_MDC2",
"OPENSSL_NO_OCB",
"OPENSSL_NO_OCSP",
"OPENSSL_NO_RC2",
"OPENSSL_NO_RC5",
"OPENSSL_NO_RFC3779",
"OPENSSL_NO_RIPEMD",
"OPENSSL_NO_RMD160",
"OPENSSL_NO_SCTP",
"OPENSSL_NO_SEED",
"OPENSSL_NO_SM2",
"OPENSSL_NO_SM3",
"OPENSSL_NO_SM4",
"OPENSSL_NO_SRP",
"OPENSSL_NO_SSL_TRACE",
"OPENSSL_NO_SSL2",
"OPENSSL_NO_SSL3",
"OPENSSL_NO_SSL3_METHOD",
"OPENSSL_NO_STATIC_ENGINE",
"OPENSSL_NO_STORE",
"OPENSSL_NO_WHIRLPOOL",
];
fn get_bssl_build_dir() -> PathBuf {
println!("cargo:rerun-if-env-changed=BORINGSSL_BUILD_DIR");
if let Some(build_dir) = env::var_os("BORINGSSL_BUILD_DIR") {
return PathBuf::from(build_dir);
}
let crate_dir = env::var_os("CARGO_MANIFEST_DIR").unwrap();
return Path::new(&crate_dir).join("../../build");
}
fn get_cpp_runtime_lib() -> Option<String> {
println!("cargo:rerun-if-env-changed=BORINGSSL_RUST_CPPLIB");
if let Ok(cpp_lib) = env::var("BORINGSSL_RUST_CPPLIB") {
return Some(cpp_lib);
}
if env::var_os("CARGO_CFG_UNIX").is_some() {
match env::var("CARGO_CFG_TARGET_OS").unwrap().as_ref() {
"macos" => Some("c++".into()),
_ => Some("stdc++".into()),
}
} else {
None
}
}
fn main() {
let bssl_build_dir = get_bssl_build_dir();
let bssl_sys_build_dir = bssl_build_dir.join("rust/bssl-sys");
let target = env::var("TARGET").unwrap();
let out_dir = env::var("OUT_DIR").unwrap();
let bindgen_out_file = Path::new(&out_dir).join("bindgen.rs");
// Find the bindgen generated target platform bindings file and put it into
// OUT_DIR/bindgen.rs.
let bindgen_source_file = bssl_sys_build_dir.join(format!("wrapper_{}.rs", target));
std::fs::copy(&bindgen_source_file, &bindgen_out_file).expect(&format!(
"Could not copy bindings from '{}' to '{}'",
bindgen_source_file.display(),
bindgen_out_file.display()
));
println!("cargo:rerun-if-changed={}", bindgen_source_file.display());
// Statically link libraries.
println!(
"cargo:rustc-link-search=native={}",
bssl_build_dir.join("crypto").display()
);
println!("cargo:rustc-link-lib=static=crypto");
println!(
"cargo:rustc-link-search=native={}",
bssl_build_dir.join("ssl").display()
);
println!("cargo:rustc-link-lib=static=ssl");
println!(
"cargo:rustc-link-search=native={}",
bssl_sys_build_dir.display()
);
println!("cargo:rustc-link-lib=static=rust_wrapper");
if let Some(cpp_lib) = get_cpp_runtime_lib() {
println!("cargo:rustc-link-lib={}", cpp_lib);
}
println!("cargo:conf={}", OSSL_CONF_DEFINES.join(","));
}