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// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
extern crate build_helper;
extern crate gcc;
use std::env;
use std::path::PathBuf;
use std::process::Command;
use build_helper::run;
fn main() {
println!("cargo:rustc-cfg=cargobuild");
let target = env::var("TARGET").unwrap();
let host = env::var("HOST").unwrap();
let build_dir = PathBuf::from(env::var_os("OUT_DIR").unwrap());
let src_dir = env::current_dir().unwrap();
if let Some(jemalloc) = env::var_os("JEMALLOC_OVERRIDE") {
let jemalloc = PathBuf::from(jemalloc);
println!("cargo:rustc-link-search=native={}",
jemalloc.parent().unwrap().display());
let stem = jemalloc.file_stem().unwrap().to_str().unwrap();
let name = jemalloc.file_name().unwrap().to_str().unwrap();
let kind = if name.ends_with(".a") {"static"} else {"dylib"};
println!("cargo:rustc-link-lib={}={}", kind, &stem[3..]);
return
}
let compiler = gcc::Config::new().get_compiler();
let ar = build_helper::cc2ar(compiler.path(), &target);
let cflags = compiler.args().iter().map(|s| s.to_str().unwrap())
.collect::<Vec<_>>().join(" ");
let mut cmd = Command::new("sh");
cmd.arg(src_dir.join("../jemalloc/configure").to_str().unwrap()
.replace("C:\\", "/c/")
.replace("\\", "/"))
.current_dir(&build_dir)
.env("CC", compiler.path())
.env("EXTRA_CFLAGS", cflags)
.env("AR", &ar)
.env("RANLIB", format!("{} s", ar.display()));
if target.contains("windows") {
// A bit of history here, this used to be --enable-lazy-lock added in
// #14006 which was filed with jemalloc in jemalloc/jemalloc#83 which
// was also reported to MinGW:
//
// http://sourceforge.net/p/mingw-w64/bugs/395/
//
// When updating jemalloc to 4.0, however, it was found that binaries
// would exit with the status code STATUS_RESOURCE_NOT_OWNED indicating
// that a thread was unlocking a mutex it never locked. Disabling this
// "lazy lock" option seems to fix the issue, but it was enabled by
// default for MinGW targets in 13473c7 for jemalloc.
//
// As a result of all that, force disabling lazy lock on Windows, and
// after reading some code it at least *appears* that the initialization
// of mutexes is otherwise ok in jemalloc, so shouldn't cause problems
// hopefully...
//
// tl;dr: make windows behave like other platforms by disabling lazy
// locking, but requires passing an option due to a historical
// default with jemalloc.
cmd.arg("--disable-lazy-lock");
} else if target.contains("ios") {
cmd.arg("--disable-tls");
} else if target.contains("android") {
// We force android to have prefixed symbols because apparently
// replacement of the libc allocator doesn't quite work. When this was
// tested (unprefixed symbols), it was found that the `realpath`
// function in libc would allocate with libc malloc (not jemalloc
// malloc), and then the standard library would free with jemalloc free,
// causing a segfault.
//
// If the test suite passes, however, without symbol prefixes then we
// should be good to go!
cmd.arg("--with-jemalloc-prefix=je_");
cmd.arg("--disable-tls");
} else if target.contains("dragonfly") {
cmd.arg("--with-jemalloc-prefix=je_");
}
if cfg!(feature = "debug-jemalloc") {
cmd.arg("--enable-debug");
}
// Turn off broken quarantine (see jemalloc/jemalloc#161)
cmd.arg("--disable-fill");
cmd.arg(format!("--host={}", build_helper::gnu_target(&target)));
cmd.arg(format!("--build={}", build_helper::gnu_target(&host)));
run(&mut cmd);
run(Command::new("make")
.current_dir(&build_dir)
.arg("build_lib_static")
.arg("-j").arg(env::var("NUM_JOBS").unwrap()));
if target.contains("windows") {
println!("cargo:rustc-link-lib=static=jemalloc");
} else {
println!("cargo:rustc-link-lib=static=jemalloc_pic");
}
println!("cargo:rustc-link-search=native={}/lib", build_dir.display());
if target.contains("android") {
println!("cargo:rustc-link-lib=gcc");
} else if !target.contains("windows") && !target.contains("musl") {
println!("cargo:rustc-link-lib=pthread");
}
}
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