453 lines
15 KiB
Rust
453 lines
15 KiB
Rust
// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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extern crate cc;
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extern crate fs_extra;
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use std::env;
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use std::fs;
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use std::fs::File;
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use std::path::{Path, PathBuf};
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use std::process::Command;
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// `jemalloc` is known not to work on these targets:
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const UNSUPPORTED_TARGETS: &[&str] = &[
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"rumprun",
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"bitrig",
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"emscripten",
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"fuchsia",
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"redox",
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"wasm32",
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];
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// `jemalloc-sys` is not tested on these targets in CI:
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const UNTESTED_TARGETS: &[&str] = &["openbsd", "msvc"];
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// `jemalloc`'s background_thread support is known not to work on these targets:
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const NO_BG_THREAD_TARGETS: &[&str] = &["musl"];
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// targets that don't support unprefixed `malloc`
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//
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// “it was found that the `realpath` function in libc would allocate with libc malloc
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// (not jemalloc malloc), and then the standard library would free with jemalloc free,
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// causing a segfault.”
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// https://github.com/rust-lang/rust/commit/e3b414d8612314e74e2b0ebde1ed5c6997d28e8d
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// https://github.com/rust-lang/rust/commit/536011d929ecbd1170baf34e09580e567c971f95
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// https://github.com/rust-lang/rust/commit/9f3de647326fbe50e0e283b9018ab7c41abccde3
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// https://github.com/rust-lang/rust/commit/ed015456a114ae907a36af80c06f81ea93182a24
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const NO_UNPREFIXED_MALLOC: &[&str] = &["android", "dragonfly", "musl", "darwin"];
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macro_rules! info {
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($($args:tt)*) => { println!($($args)*) }
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}
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macro_rules! warning {
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($arg:tt, $($args:tt)*) => {
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println!(concat!(concat!("cargo:warning=\"", $arg), "\""), $($args)*)
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}
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}
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fn main() {
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let target = env::var("TARGET").expect("TARGET was not set");
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let host = env::var("HOST").expect("HOST was not set");
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let num_jobs = env::var("NUM_JOBS").expect("NUM_JOBS was not set");
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let out_dir = PathBuf::from(env::var_os("OUT_DIR").expect("OUT_DIR was not set"));
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let src_dir = env::current_dir().expect("failed to get current directory");
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info!("TARGET={}", target.clone());
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info!("HOST={}", host.clone());
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info!("NUM_JOBS={}", num_jobs.clone());
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info!("OUT_DIR={:?}", out_dir);
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let build_dir = out_dir.join("build");
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info!("BUILD_DIR={:?}", build_dir);
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info!("SRC_DIR={:?}", src_dir);
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if UNSUPPORTED_TARGETS.iter().any(|i| target.contains(i)) {
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panic!("jemalloc does not support target: {}", target);
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}
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if UNTESTED_TARGETS.iter().any(|i| target.contains(i)) {
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warning!("jemalloc support for `{}` is untested", target);
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}
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let mut use_prefix =
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env::var("CARGO_FEATURE_UNPREFIXED_MALLOC_ON_SUPPORTED_PLATFORMS").is_err();
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if !use_prefix && NO_UNPREFIXED_MALLOC.iter().any(|i| target.contains(i)) {
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warning!(
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"Unprefixed `malloc` requested on unsupported platform `{}` => using prefixed `malloc`",
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target
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);
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use_prefix = true;
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}
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// this has to occur before the early return when JEMALLOC_OVERRIDE is set
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if use_prefix {
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println!("cargo:rustc-cfg=prefixed");
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}
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if let Some(jemalloc) = env::var_os("JEMALLOC_OVERRIDE") {
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info!("jemalloc override set");
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let jemalloc = PathBuf::from(jemalloc);
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assert!(
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jemalloc.exists(),
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"Path to `jemalloc` in `JEMALLOC_OVERRIDE={}` does not exist",
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jemalloc.display()
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);
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println!(
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"cargo:rustc-link-search=native={}",
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jemalloc.parent().unwrap().display()
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);
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let stem = jemalloc.file_stem().unwrap().to_str().unwrap();
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let name = jemalloc.file_name().unwrap().to_str().unwrap();
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let kind = if name.ends_with(".a") {
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"static"
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} else {
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"dylib"
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};
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println!("cargo:rustc-link-lib={}={}", kind, &stem[3..]);
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return;
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}
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fs::create_dir_all(&build_dir).unwrap();
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// Disable -Wextra warnings - jemalloc doesn't compile free of warnings with
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// it enabled: https://github.com/jemalloc/jemalloc/issues/1196
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let compiler = cc::Build::new().extra_warnings(false).get_compiler();
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let cflags = compiler
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.args()
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.iter()
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.map(|s| s.to_str().unwrap())
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.collect::<Vec<_>>()
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.join(" ");
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info!("CC={:?}", compiler.path());
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info!("CFLAGS={:?}", cflags);
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assert!(out_dir.exists(), "OUT_DIR does not exist");
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let (jemalloc_repo_dir, run_autoconf) = if env::var("JEMALLOC_SYS_GIT_DEV_BRANCH").is_ok() {
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let jemalloc_repo = out_dir.join("jemalloc_repo");
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if jemalloc_repo.exists() {
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fs::remove_dir_all(jemalloc_repo.clone()).unwrap();
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}
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let mut cmd = Command::new("git");
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cmd.arg("clone")
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.arg("--depth=1")
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.arg("--branch=dev")
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.arg("--")
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.arg("https://github.com/jemalloc/jemalloc")
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.arg(format!("{}", jemalloc_repo.display()));
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run(&mut cmd);
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(jemalloc_repo, true)
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} else {
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(PathBuf::from("jemalloc"), false)
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};
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info!("JEMALLOC_REPO_DIR={:?}", jemalloc_repo_dir);
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let jemalloc_src_dir = out_dir.join("jemalloc");
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info!("JEMALLOC_SRC_DIR={:?}", jemalloc_src_dir);
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if jemalloc_src_dir.exists() {
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fs::remove_dir_all(jemalloc_src_dir.clone()).unwrap();
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}
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// Copy jemalloc submodule to the OUT_DIR
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let mut copy_options = fs_extra::dir::CopyOptions::new();
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copy_options.overwrite = true;
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copy_options.copy_inside = true;
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fs_extra::dir::copy(&jemalloc_repo_dir, &jemalloc_src_dir, ©_options)
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.expect("failed to copy jemalloc source code to OUT_DIR");
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assert!(jemalloc_src_dir.exists());
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// Configuration files
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let config_files = ["configure" /*"VERSION"*/];
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// Verify that the configuration files are up-to-date
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let verify_configure = env::var("JEMALLOC_SYS_VERIFY_CONFIGURE").is_ok();
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if verify_configure || run_autoconf {
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info!("Verifying that configuration files in `configure/` are up-to-date... ");
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// The configuration file from the configure/directory should be used.
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// The jemalloc git submodule shouldn't contain any configuration files.
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assert!(
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!jemalloc_src_dir.join("configure").exists(),
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"the jemalloc submodule contains configuration files"
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);
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// Run autoconf:
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let mut cmd = Command::new("autoconf");
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cmd.current_dir(jemalloc_src_dir.clone());
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run(&mut cmd);
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for f in &config_files {
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use std::io::Read;
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fn read_content(file_path: &Path) -> String {
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assert!(
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file_path.exists(),
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"config file path `{}` does not exist",
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file_path.display()
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);
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let mut file = File::open(file_path).expect("file not found");
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let mut content = String::new();
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file.read_to_string(&mut content)
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.expect("failed to read file");
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content
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}
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if verify_configure {
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let current = read_content(&jemalloc_src_dir.join(f));
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let reference = read_content(&Path::new("configure").join(f));
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assert_eq!(
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current, reference,
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"the current and reference configuration files \"{}\" differ",
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f
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);
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}
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}
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} else {
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// Copy the configuration files to jemalloc's source directory
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for f in &config_files {
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fs::copy(Path::new("configure").join(f), jemalloc_src_dir.join(f))
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.expect("failed to copy config file to OUT_DIR");
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}
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}
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// Run configure:
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let configure = jemalloc_src_dir.join("configure");
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let mut cmd = Command::new("sh");
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cmd.arg(
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configure
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.to_str()
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.unwrap()
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.replace("C:\\", "/c/")
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.replace("\\", "/"),
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)
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.current_dir(&build_dir)
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.env("CC", compiler.path())
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.env("CFLAGS", cflags.clone())
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.env("LDFLAGS", cflags.clone())
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.env("CPPFLAGS", cflags.clone())
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.arg("--disable-cxx");
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if target.contains("ios") {
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// newer iOS deviced have 16kb page sizes:
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// closed: https://github.com/gnzlbg/jemallocator/issues/68
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cmd.arg("--with-lg-page=14");
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}
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// collect `malloc_conf` string:
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let mut malloc_conf = String::new();
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if let Some(bg) = BackgroundThreadSupport::new(&target) {
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// `jemalloc` is compiled with background thread run-time support on
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// available platforms by default so there is nothing to do to enable
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// it.
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if bg.always_enabled {
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// Background thread support does not enable background threads at
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// run-time, just support for enabling them via run-time configuration
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// options (they are disabled by default)
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// The `enable_background_threads` cargo feature forces background
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// threads to be enabled at run-time by default:
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malloc_conf += "background_thread:true";
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}
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} else {
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// Background thread run-time support is disabled by
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// disabling background threads at compile-time:
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malloc_conf += "background_thread:false";
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}
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if let Ok(malloc_conf_opts) = env::var("JEMALLOC_SYS_WITH_MALLOC_CONF") {
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malloc_conf += &format!(
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"{}{}",
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if malloc_conf.is_empty() { "" } else { "," },
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malloc_conf_opts
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);
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}
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if !malloc_conf.is_empty() {
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info!("--with-malloc-conf={}", malloc_conf);
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cmd.arg(format!("--with-malloc-conf={}", malloc_conf));
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}
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if let Ok(lg_page) = env::var("JEMALLOC_SYS_WITH_LG_PAGE") {
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info!("--with-lg-page={}", lg_page);
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cmd.arg(format!("--with-lg-page={}", lg_page));
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}
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if let Ok(lg_hugepage) = env::var("JEMALLOC_SYS_WITH_LG_HUGEPAGE") {
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info!("--with-lg-hugepage={}", lg_hugepage);
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cmd.arg(format!("--with-lg-hugepage={}", lg_hugepage));
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}
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if let Ok(lg_quantum) = env::var("JEMALLOC_SYS_WITH_LG_QUANTUM") {
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info!("--with-lg-quantum={}", lg_quantum);
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cmd.arg(format!("--with-lg-quantum={}", lg_quantum));
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}
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if let Ok(lg_vaddr) = env::var("JEMALLOC_SYS_WITH_LG_VADDR") {
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info!("--with-lg-vaddr={}", lg_vaddr);
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cmd.arg(format!("--with-lg-vaddr={}", lg_vaddr));
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}
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if use_prefix {
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cmd.arg("--with-jemalloc-prefix=_rjem_");
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info!("--with-jemalloc-prefix=_rjem_");
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}
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cmd.arg("--with-private-namespace=_rjem_");
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if env::var("CARGO_FEATURE_DEBUG").is_ok() {
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info!("CARGO_FEATURE_DEBUG set");
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cmd.arg("--enable-debug");
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}
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if env::var("CARGO_FEATURE_PROFILING").is_ok() {
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info!("CARGO_FEATURE_PROFILING set");
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cmd.arg("--enable-prof");
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}
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if env::var("CARGO_FEATURE_STATS").is_ok() {
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info!("CARGO_FEATURE_STATS set");
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cmd.arg("--enable-stats");
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}
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if env::var("CARGO_FEATURE_DISABLE_INITIAL_EXEC_TLS").is_ok() {
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info!("CARGO_FEATURE_DISABLE_INITIAL_EXEC_TLS set");
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cmd.arg("--disable-initial-exec-tls");
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}
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cmd.arg(format!("--host={}", gnu_target(&target)));
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cmd.arg(format!("--build={}", gnu_target(&host)));
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cmd.arg(format!("--prefix={}", out_dir.display()));
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run(&mut cmd);
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// Make:
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let make = make_cmd(&host);
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run(Command::new(make)
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.current_dir(&build_dir)
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.arg("srcroot=../jemalloc/")
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.arg("-j")
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.arg(num_jobs.clone()));
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if env::var("JEMALLOC_SYS_RUN_JEMALLOC_TESTS").is_ok() {
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info!("Building and running jemalloc tests...");
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// Make tests:
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run(Command::new(make)
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.current_dir(&build_dir)
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.arg("srcroot=../jemalloc/")
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.arg("-j")
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.arg(num_jobs.clone())
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.arg("tests"));
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// Run tests:
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run(Command::new(make)
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.current_dir(&build_dir)
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.arg("srcroot=../jemalloc/")
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.arg("check"));
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}
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// Make install:
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run(Command::new(make)
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.current_dir(&build_dir)
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.arg("srcroot=../jemalloc/")
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.arg("install_lib_static")
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.arg("install_include")
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.arg("-j")
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.arg(num_jobs.clone()));
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println!("cargo:root={}", out_dir.display());
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// Linkage directives to pull in jemalloc and its dependencies.
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//
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// On some platforms we need to be sure to link in `pthread` which jemalloc
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// depends on, and specifically on android we need to also link to libgcc.
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// Currently jemalloc is compiled with gcc which will generate calls to
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// intrinsics that are libgcc specific (e.g. those intrinsics aren't present in
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// libcompiler-rt), so link that in to get that support.
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if target.contains("windows") {
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println!("cargo:rustc-link-lib=static=jemalloc");
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} else {
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println!("cargo:rustc-link-lib=static=jemalloc_pic");
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}
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println!("cargo:rustc-link-search=native={}/lib", build_dir.display());
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if target.contains("android") {
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println!("cargo:rustc-link-lib=gcc");
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} else if !target.contains("windows") {
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println!("cargo:rustc-link-lib=pthread");
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}
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println!("cargo:rerun-if-changed=jemalloc");
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}
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fn run(cmd: &mut Command) {
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println!("running: {:?}", cmd);
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let status = match cmd.status() {
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Ok(status) => status,
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Err(e) => panic!("failed to execute command: {}", e),
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};
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if !status.success() {
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panic!(
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"command did not execute successfully: {:?}\n\
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expected success, got: {}",
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cmd, status
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);
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}
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}
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fn gnu_target(target: &str) -> String {
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match target {
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"i686-pc-windows-msvc" => "i686-pc-win32".to_string(),
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"x86_64-pc-windows-msvc" => "x86_64-pc-win32".to_string(),
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"i686-pc-windows-gnu" => "i686-w64-mingw32".to_string(),
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"x86_64-pc-windows-gnu" => "x86_64-w64-mingw32".to_string(),
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"armv7-linux-androideabi" => "arm-linux-androideabi".to_string(),
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s => s.to_string(),
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}
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}
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fn make_cmd(host: &str) -> &'static str {
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const GMAKE_HOSTS: &[&str] = &["bitrig", "dragonfly", "freebsd", "netbsd", "openbsd"];
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if GMAKE_HOSTS.iter().any(|i| host.contains(i)) {
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"gmake"
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} else if host.contains("windows") {
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"mingw32-make"
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} else {
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"make"
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}
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}
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struct BackgroundThreadSupport {
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always_enabled: bool,
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}
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impl BackgroundThreadSupport {
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fn new(target: &str) -> Option<Self> {
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let runtime_support = env::var("CARGO_FEATURE_BACKGROUND_THREADS_RUNTIME_SUPPORT").is_ok();
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let always_enabled = env::var("CARGO_FEATURE_BACKGROUND_THREADS").is_ok();
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if !runtime_support {
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assert!(
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!always_enabled,
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"enabling `background_threads` requires `background_threads_runtime_support`"
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);
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return None;
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}
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if NO_BG_THREAD_TARGETS.iter().any(|i| target.contains(i)) {
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warning!(
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"`background_threads_runtime_support` not supported for `{}`",
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target
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);
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}
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Some(Self { always_enabled })
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}
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}
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