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native.rs
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native.rs
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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.
//! Compilation of native dependencies like LLVM.
//!
//! Native projects like LLVM unfortunately aren't suited just yet for
//! compilation in build scripts that Cargo has. This is because thie
//! compilation takes a *very* long time but also because we don't want to
//! compile LLVM 3 times as part of a normal bootstrap (we want it cached).
//!
//! LLVM and compiler-rt are essentially just wired up to everything else to
//! ensure that they're always in place if needed.
use std::env;
use std::fs::{self, File};
use std::io::{Read, Write};
use std::path::Path;
use std::process::Command;
use build_helper::output;
use cmake;
use gcc;
use Build;
use util;
use build_helper::up_to_date;
/// Compile LLVM for `target`.
pub fn llvm(build: &Build, target: &str) {
// If we're using a custom LLVM bail out here, but we can only use a
// custom LLVM for the build triple.
if let Some(config) = build.config.target_config.get(target) {
if let Some(ref s) = config.llvm_config {
return check_llvm_version(build, s);
}
}
let rebuild_trigger = build.src.join("src/rustllvm/llvm-rebuild-trigger");
let mut rebuild_trigger_contents = String::new();
t!(t!(File::open(&rebuild_trigger)).read_to_string(&mut rebuild_trigger_contents));
let out_dir = build.llvm_out(target);
let done_stamp = out_dir.join("llvm-finished-building");
if done_stamp.exists() {
let mut done_contents = String::new();
t!(t!(File::open(&done_stamp)).read_to_string(&mut done_contents));
// If LLVM was already built previously and contents of the rebuild-trigger file
// didn't change from the previous build, then no action is required.
if done_contents == rebuild_trigger_contents {
return
}
}
if build.config.llvm_clean_rebuild {
drop(fs::remove_dir_all(&out_dir));
}
println!("Building LLVM for {}", target);
let _time = util::timeit();
t!(fs::create_dir_all(&out_dir));
// http://llvm.org/docs/CMake.html
let mut cfg = cmake::Config::new(build.src.join("src/llvm"));
if build.config.ninja {
cfg.generator("Ninja");
}
let profile = match (build.config.llvm_optimize, build.config.llvm_release_debuginfo) {
(false, _) => "Debug",
(true, false) => "Release",
(true, true) => "RelWithDebInfo",
};
// NOTE: remember to also update `config.toml.example` when changing the defaults!
let llvm_targets = match build.config.llvm_targets {
Some(ref s) => s,
None => "X86;ARM;AArch64;Mips;PowerPC;SystemZ;JSBackend;MSP430;Sparc;NVPTX",
};
let assertions = if build.config.llvm_assertions {"ON"} else {"OFF"};
cfg.target(target)
.host(&build.config.build)
.out_dir(&out_dir)
.profile(profile)
.define("LLVM_ENABLE_ASSERTIONS", assertions)
.define("LLVM_TARGETS_TO_BUILD", llvm_targets)
.define("LLVM_INCLUDE_EXAMPLES", "OFF")
.define("LLVM_INCLUDE_TESTS", "OFF")
.define("LLVM_INCLUDE_DOCS", "OFF")
.define("LLVM_ENABLE_ZLIB", "OFF")
.define("WITH_POLLY", "OFF")
.define("LLVM_ENABLE_TERMINFO", "OFF")
.define("LLVM_ENABLE_LIBEDIT", "OFF")
.define("LLVM_PARALLEL_COMPILE_JOBS", build.jobs().to_string())
.define("LLVM_TARGET_ARCH", target.split('-').next().unwrap())
.define("LLVM_DEFAULT_TARGET_TRIPLE", target);
if target.contains("msvc") {
cfg.define("LLVM_USE_CRT_DEBUG", "MT");
cfg.define("LLVM_USE_CRT_RELEASE", "MT");
cfg.define("LLVM_USE_CRT_RELWITHDEBINFO", "MT");
}
if target.starts_with("i686") {
cfg.define("LLVM_BUILD_32_BITS", "ON");
}
if let Some(num_linkers) = build.config.llvm_link_jobs {
if num_linkers > 0 {
cfg.define("LLVM_PARALLEL_LINK_JOBS", num_linkers.to_string());
}
}
// http://llvm.org/docs/HowToCrossCompileLLVM.html
if target != build.config.build {
// FIXME: if the llvm root for the build triple is overridden then we
// should use llvm-tblgen from there, also should verify that it
// actually exists most of the time in normal installs of LLVM.
let host = build.llvm_out(&build.config.build).join("bin/llvm-tblgen");
cfg.define("CMAKE_CROSSCOMPILING", "True")
.define("LLVM_TABLEGEN", &host);
}
// MSVC handles compiler business itself
if !target.contains("msvc") {
if let Some(ref ccache) = build.config.ccache {
cfg.define("CMAKE_C_COMPILER", ccache)
.define("CMAKE_C_COMPILER_ARG1", build.cc(target))
.define("CMAKE_CXX_COMPILER", ccache)
.define("CMAKE_CXX_COMPILER_ARG1", build.cxx(target));
} else {
cfg.define("CMAKE_C_COMPILER", build.cc(target))
.define("CMAKE_CXX_COMPILER", build.cxx(target));
}
cfg.build_arg("-j").build_arg(build.jobs().to_string());
cfg.define("CMAKE_C_FLAGS", build.cflags(target).join(" "));
cfg.define("CMAKE_CXX_FLAGS", build.cflags(target).join(" "));
}
if env::var_os("SCCACHE_ERROR_LOG").is_some() {
cfg.env("RUST_LOG", "sccache=debug");
}
// FIXME: we don't actually need to build all LLVM tools and all LLVM
// libraries here, e.g. we just want a few components and a few
// tools. Figure out how to filter them down and only build the right
// tools and libs on all platforms.
cfg.build();
t!(t!(File::create(&done_stamp)).write_all(rebuild_trigger_contents.as_bytes()));
}
fn check_llvm_version(build: &Build, llvm_config: &Path) {
if !build.config.llvm_version_check {
return
}
let mut cmd = Command::new(llvm_config);
let version = output(cmd.arg("--version"));
if version.starts_with("3.5") || version.starts_with("3.6") ||
version.starts_with("3.7") {
return
}
panic!("\n\nbad LLVM version: {}, need >=3.5\n\n", version)
}
/// Compiles the `rust_test_helpers.c` library which we used in various
/// `run-pass` test suites for ABI testing.
pub fn test_helpers(build: &Build, target: &str) {
let dst = build.test_helpers_out(target);
let src = build.src.join("src/rt/rust_test_helpers.c");
if up_to_date(&src, &dst.join("librust_test_helpers.a")) {
return
}
println!("Building test helpers");
t!(fs::create_dir_all(&dst));
let mut cfg = gcc::Config::new();
// We may have found various cross-compilers a little differently due to our
// extra configuration, so inform gcc of these compilers. Note, though, that
// on MSVC we still need gcc's detection of env vars (ugh).
if !target.contains("msvc") {
if let Some(ar) = build.ar(target) {
cfg.archiver(ar);
}
cfg.compiler(build.cc(target));
}
cfg.cargo_metadata(false)
.out_dir(&dst)
.target(target)
.host(&build.config.build)
.opt_level(0)
.debug(false)
.file(build.src.join("src/rt/rust_test_helpers.c"))
.compile("librust_test_helpers.a");
}
const OPENSSL_VERS: &'static str = "1.0.2k";
const OPENSSL_SHA256: &'static str =
"6b3977c61f2aedf0f96367dcfb5c6e578cf37e7b8d913b4ecb6643c3cb88d8c0";
pub fn openssl(build: &Build, target: &str) {
let out = match build.openssl_dir(target) {
Some(dir) => dir,
None => return,
};
let stamp = out.join(".stamp");
let mut contents = String::new();
drop(File::open(&stamp).and_then(|mut f| f.read_to_string(&mut contents)));
if contents == OPENSSL_VERS {
return
}
t!(fs::create_dir_all(&out));
let name = format!("openssl-{}.tar.gz", OPENSSL_VERS);
let tarball = out.join(&name);
if !tarball.exists() {
let tmp = tarball.with_extension("tmp");
// originally from https://www.openssl.org/source/...
let url = format!("https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/{}",
name);
let mut ok = false;
for _ in 0..3 {
let status = Command::new("curl")
.arg("-o").arg(&tmp)
.arg(&url)
.status()
.expect("failed to spawn curl");
if status.success() {
ok = true;
break
}
}
if !ok {
panic!("failed to download openssl source")
}
let mut shasum = if target.contains("apple") {
let mut cmd = Command::new("shasum");
cmd.arg("-a").arg("256");
cmd
} else {
Command::new("sha256sum")
};
let output = output(&mut shasum.arg(&tmp));
let found = output.split_whitespace().next().unwrap();
if found != OPENSSL_SHA256 {
panic!("downloaded openssl sha256 different\n\
expected: {}\n\
found: {}\n", OPENSSL_SHA256, found);
}
t!(fs::rename(&tmp, &tarball));
}
let obj = out.join(format!("openssl-{}", OPENSSL_VERS));
let dst = build.openssl_install_dir(target).unwrap();
drop(fs::remove_dir_all(&obj));
drop(fs::remove_dir_all(&dst));
build.run(Command::new("tar").arg("xf").arg(&tarball).current_dir(&out));
let mut configure = Command::new(obj.join("Configure"));
configure.arg(format!("--prefix={}", dst.display()));
configure.arg("no-dso");
configure.arg("no-ssl2");
configure.arg("no-ssl3");
let os = match target {
"aarch64-unknown-linux-gnu" => "linux-aarch64",
"arm-unknown-linux-gnueabi" => "linux-armv4",
"arm-unknown-linux-gnueabihf" => "linux-armv4",
"armv7-unknown-linux-gnueabihf" => "linux-armv4",
"i686-apple-darwin" => "darwin-i386-cc",
"i686-unknown-freebsd" => "BSD-x86-elf",
"i686-unknown-linux-gnu" => "linux-elf",
"i686-unknown-linux-musl" => "linux-elf",
"mips-unknown-linux-gnu" => "linux-mips32",
"mips64-unknown-linux-gnuabi64" => "linux64-mips64",
"mips64el-unknown-linux-gnuabi64" => "linux64-mips64",
"mipsel-unknown-linux-gnu" => "linux-mips32",
"powerpc-unknown-linux-gnu" => "linux-ppc",
"powerpc64-unknown-linux-gnu" => "linux-ppc64",
"powerpc64le-unknown-linux-gnu" => "linux-ppc64le",
"s390x-unknown-linux-gnu" => "linux64-s390x",
"x86_64-apple-darwin" => "darwin64-x86_64-cc",
"x86_64-unknown-freebsd" => "BSD-x86_64",
"x86_64-unknown-linux-gnu" => "linux-x86_64",
"x86_64-unknown-linux-musl" => "linux-x86_64",
"x86_64-unknown-netbsd" => "BSD-x86_64",
_ => panic!("don't know how to configure OpenSSL for {}", target),
};
configure.arg(os);
configure.env("CC", build.cc(target));
for flag in build.cflags(target) {
configure.arg(flag);
}
configure.current_dir(&obj);
println!("Configuring openssl for {}", target);
build.run_quiet(&mut configure);
println!("Building openssl for {}", target);
build.run_quiet(Command::new("make").current_dir(&obj));
println!("Installing openssl for {}", target);
build.run_quiet(Command::new("make").arg("install").current_dir(&obj));
let mut f = t!(File::create(&stamp));
t!(f.write_all(OPENSSL_VERS.as_bytes()));
}