extern crate cc;
extern crate cmake;
extern crate pkg_config;
use std::env::VarError;
use std::path::Path;
use std::{env, fs, io};
use cc::Build;
use cmake::Config;
use pkg_config::{Config as PkgConfig, Library};
const GRPC_VERSION: &'static str = "1.17.2";
fn probe_library(library: &str, cargo_metadata: bool) -> Library {
match PkgConfig::new()
.atleast_version(GRPC_VERSION)
.cargo_metadata(cargo_metadata)
.probe(library)
{
Ok(lib) => lib,
Err(e) => panic!("can't find library {} via pkg-config: {:?}", library, e),
}
}
fn prepare_grpc() {
let mut modules = vec![
"grpc",
"grpc/third_party/zlib",
"grpc/third_party/cares/cares",
"grpc/third_party/address_sorting",
];
if cfg!(feature = "secure") {
modules.push("grpc/third_party/boringssl");
}
for module in modules {
if is_directory_empty(module).unwrap_or(true) {
panic!(
"Can't find module {}. You need to run `git submodule \
update --init --recursive` first to build the project.",
module
);
}
}
}
fn is_directory_empty<P: AsRef<Path>>(p: P) -> Result<bool, io::Error> {
let mut entries = fs::read_dir(p)?;
Ok(entries.next().is_none())
}
fn build_grpc(cc: &mut Build, library: &str) {
prepare_grpc();
let dst = {
let mut config = Config::new("grpc");
if !cfg!(feature = "secure") {
config.define("GO_EXECUTABLE", "fake-go-nonexist");
}
if get_env("CARGO_CFG_TARGET_OS").map_or(false, |s| s == "macos") {
config.cxxflag("-stdlib=libc++");
}
if env::var("CARGO_CFG_TARGET_ENV").unwrap_or("".to_owned()) == "musl" {
config.define("CMAKE_CXX_COMPILER", "g++");
}
match env::var("TARGET").unwrap_or("".to_owned()).as_str() {
"aarch64-apple-ios" => {
config
.define("CMAKE_OSX_SYSROOT", "iphoneos")
.define("CMAKE_OSX_ARCHITECTURES", "arm64");
}
"armv7-apple-ios" => {
config
.define("CMAKE_OSX_SYSROOT", "iphoneos")
.define("CMAKE_OSX_ARCHITECTURES", "armv7");
}
"armv7s-apple-ios" => {
config
.define("CMAKE_OSX_SYSROOT", "iphoneos")
.define("CMAKE_OSX_ARCHITECTURES", "armv7s");
}
"i386-apple-ios" => {
config
.define("CMAKE_OSX_SYSROOT", "iphonesimulator")
.define("CMAKE_OSX_ARCHITECTURES", "i386");
}
"x86_64-apple-ios" => {
config
.define("CMAKE_OSX_SYSROOT", "iphonesimulator")
.define("CMAKE_OSX_ARCHITECTURES", "x86_64");
}
_ => {}
};
match env::var("CMAKE_TARGET_OVERRIDE") {
Ok(val) => {
config.target(&val);
}
Err(_) => {}
};
config.define("gRPC_INSTALL", "false");
config.define("gRPC_BUILD_CSHARP_EXT", "false");
config.define("gRPC_BUILD_CODEGEN", "false");
config.define("gRPC_BENCHMARK_PROVIDER", "none");
if cfg!(feature = "openssl") {
config.define("gRPC_SSL_PROVIDER", "package");
config.define("EMBED_OPENSSL", "false");
config.cxxflag("-DTSI_OPENSSL_ALPN_SUPPORT=0");
}
config.build_target(library).uses_cxx11().build()
};
let mut zlib = "z";
let build_dir = format!("{}/build", dst.display());
let third_party = vec![
"cares/cares/lib",
"zlib",
"boringssl/ssl",
"boringssl/crypto",
];
if get_env("CARGO_CFG_TARGET_OS").map_or(false, |s| s == "windows") {
let profile = match &*env::var("PROFILE").unwrap_or("debug".to_owned()) {
"bench" | "release" => {
zlib = "zlibstatic";
"Release"
}
_ => {
zlib = "zlibstaticd";
"Debug"
}
};
println!("cargo:rustc-link-search=native={}/{}", build_dir, profile);
for path in third_party {
println!(
"cargo:rustc-link-search=native={}/third_party/{}/{}",
build_dir, path, profile
);
}
} else {
println!("cargo:rustc-link-search=native={}", build_dir);
for path in third_party {
println!(
"cargo:rustc-link-search=native={}/third_party/{}",
build_dir, path,
);
}
}
println!("cargo:rustc-link-lib=static={}", zlib);
println!("cargo:rustc-link-lib=static=cares");
println!("cargo:rustc-link-lib=static=gpr");
println!("cargo:rustc-link-lib=static=address_sorting");
println!("cargo:rustc-link-lib=static={}", library);
if cfg!(feature = "secure") {
if cfg!(feature = "openssl") {
println!("cargo:rustc-link-lib=ssl");
println!("cargo:rustc-link-lib=crypto");
} else {
println!("cargo:rustc-link-lib=static=ssl");
println!("cargo:rustc-link-lib=static=crypto");
}
}
cc.include("grpc/include");
}
fn get_env(name: &str) -> Option<String> {
println!("cargo:rerun-if-env-changed={}", name);
match env::var(name) {
Ok(s) => Some(s),
Err(VarError::NotPresent) => None,
Err(VarError::NotUnicode(s)) => {
panic!("unrecognize env var of {}: {:?}", name, s.to_string_lossy());
}
}
}
fn main() {
let mut cc = Build::new();
println!("cargo:rerun-if-changed=grpc_wrap.cc");
println!("cargo:rerun-if-changed=grpc");
let library = if cfg!(feature = "secure") {
cc.define("GRPC_SYS_SECURE", None);
"grpc"
} else {
"grpc_unsecure"
};
if get_env("GRPCIO_SYS_USE_PKG_CONFIG").map_or(false, |s| s == "1") {
let lib_core = probe_library(library, true);
for inc_path in lib_core.include_paths {
cc.include(inc_path);
}
} else {
build_grpc(&mut cc, library);
}
cc.cpp(true);
if !cfg!(target_env = "msvc") {
cc.flag("-std=c++11");
}
cc.file("grpc_wrap.cc");
if get_env("CARGO_CFG_TARGET_OS").map_or(false, |s| s == "windows") {
cc.define("_WIN32_WINNT", Some("0x0700"));
}
cc.warnings_into_errors(true);
cc.compile("libgrpc_wrap.a");
}