1 // Copyright 2015 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 //! Compilation of native dependencies like LLVM.
13 //! Native projects like LLVM unfortunately aren't suited just yet for
14 //! compilation in build scripts that Cargo has. This is because thie
15 //! compilation takes a *very* long time but also because we don't want to
16 //! compile LLVM 3 times as part of a normal bootstrap (we want it cached).
18 //! LLVM and compiler-rt are essentially just wired up to everything else to
19 //! ensure that they're always in place if needed.
22 use std::fs::{self, File};
23 use std::io::{Read, Write};
25 use std::process::Command;
27 use build_helper::output;
33 use build_helper::up_to_date;
35 /// Compile LLVM for `target`.
36 pub fn llvm(build: &Build, target: &str) {
37 // If we're using a custom LLVM bail out here, but we can only use a
38 // custom LLVM for the build triple.
39 if let Some(config) = build.config.target_config.get(target) {
40 if let Some(ref s) = config.llvm_config {
41 return check_llvm_version(build, s);
45 let rebuild_trigger = build.src.join("src/rustllvm/llvm-rebuild-trigger");
46 let mut rebuild_trigger_contents = String::new();
47 t!(t!(File::open(&rebuild_trigger)).read_to_string(&mut rebuild_trigger_contents));
49 let out_dir = build.llvm_out(target);
50 let done_stamp = out_dir.join("llvm-finished-building");
51 if done_stamp.exists() {
52 let mut done_contents = String::new();
53 t!(t!(File::open(&done_stamp)).read_to_string(&mut done_contents));
55 // If LLVM was already built previously and contents of the rebuild-trigger file
56 // didn't change from the previous build, then no action is required.
57 if done_contents == rebuild_trigger_contents {
61 if build.config.llvm_clean_rebuild {
62 drop(fs::remove_dir_all(&out_dir));
65 println!("Building LLVM for {}", target);
66 let _time = util::timeit();
67 t!(fs::create_dir_all(&out_dir));
69 // http://llvm.org/docs/CMake.html
70 let mut cfg = cmake::Config::new(build.src.join("src/llvm"));
71 if build.config.ninja {
72 cfg.generator("Ninja");
75 let profile = match (build.config.llvm_optimize, build.config.llvm_release_debuginfo) {
76 (false, _) => "Debug",
77 (true, false) => "Release",
78 (true, true) => "RelWithDebInfo",
81 // NOTE: remember to also update `config.toml.example` when changing the defaults!
82 let llvm_targets = match build.config.llvm_targets {
84 None => "X86;ARM;AArch64;Mips;PowerPC;SystemZ;JSBackend;MSP430;Sparc;NVPTX",
87 let assertions = if build.config.llvm_assertions {"ON"} else {"OFF"};
90 .host(&build.config.build)
93 .define("LLVM_ENABLE_ASSERTIONS", assertions)
94 .define("LLVM_TARGETS_TO_BUILD", llvm_targets)
95 .define("LLVM_INCLUDE_EXAMPLES", "OFF")
96 .define("LLVM_INCLUDE_TESTS", "OFF")
97 .define("LLVM_INCLUDE_DOCS", "OFF")
98 .define("LLVM_ENABLE_ZLIB", "OFF")
99 .define("WITH_POLLY", "OFF")
100 .define("LLVM_ENABLE_TERMINFO", "OFF")
101 .define("LLVM_ENABLE_LIBEDIT", "OFF")
102 .define("LLVM_PARALLEL_COMPILE_JOBS", build.jobs().to_string())
103 .define("LLVM_TARGET_ARCH", target.split('-').next().unwrap())
104 .define("LLVM_DEFAULT_TARGET_TRIPLE", target);
106 if target.contains("msvc") {
107 cfg.define("LLVM_USE_CRT_DEBUG", "MT");
108 cfg.define("LLVM_USE_CRT_RELEASE", "MT");
109 cfg.define("LLVM_USE_CRT_RELWITHDEBINFO", "MT");
112 if target.starts_with("i686") {
113 cfg.define("LLVM_BUILD_32_BITS", "ON");
116 if let Some(num_linkers) = build.config.llvm_link_jobs {
118 cfg.define("LLVM_PARALLEL_LINK_JOBS", num_linkers.to_string());
122 // http://llvm.org/docs/HowToCrossCompileLLVM.html
123 if target != build.config.build {
124 // FIXME: if the llvm root for the build triple is overridden then we
125 // should use llvm-tblgen from there, also should verify that it
126 // actually exists most of the time in normal installs of LLVM.
127 let host = build.llvm_out(&build.config.build).join("bin/llvm-tblgen");
128 cfg.define("CMAKE_CROSSCOMPILING", "True")
129 .define("LLVM_TABLEGEN", &host);
132 // MSVC handles compiler business itself
133 if !target.contains("msvc") {
134 if let Some(ref ccache) = build.config.ccache {
135 cfg.define("CMAKE_C_COMPILER", ccache)
136 .define("CMAKE_C_COMPILER_ARG1", build.cc(target))
137 .define("CMAKE_CXX_COMPILER", ccache)
138 .define("CMAKE_CXX_COMPILER_ARG1", build.cxx(target));
140 cfg.define("CMAKE_C_COMPILER", build.cc(target))
141 .define("CMAKE_CXX_COMPILER", build.cxx(target));
143 cfg.build_arg("-j").build_arg(build.jobs().to_string());
145 cfg.define("CMAKE_C_FLAGS", build.cflags(target).join(" "));
146 cfg.define("CMAKE_CXX_FLAGS", build.cflags(target).join(" "));
149 if env::var_os("SCCACHE_ERROR_LOG").is_some() {
150 cfg.env("RUST_LOG", "sccache=info");
153 // FIXME: we don't actually need to build all LLVM tools and all LLVM
154 // libraries here, e.g. we just want a few components and a few
155 // tools. Figure out how to filter them down and only build the right
156 // tools and libs on all platforms.
159 t!(t!(File::create(&done_stamp)).write_all(rebuild_trigger_contents.as_bytes()));
162 fn check_llvm_version(build: &Build, llvm_config: &Path) {
163 if !build.config.llvm_version_check {
167 let mut cmd = Command::new(llvm_config);
168 let version = output(cmd.arg("--version"));
169 if version.starts_with("3.5") || version.starts_with("3.6") ||
170 version.starts_with("3.7") {
173 panic!("\n\nbad LLVM version: {}, need >=3.5\n\n", version)
176 /// Compiles the `rust_test_helpers.c` library which we used in various
177 /// `run-pass` test suites for ABI testing.
178 pub fn test_helpers(build: &Build, target: &str) {
179 let dst = build.test_helpers_out(target);
180 let src = build.src.join("src/rt/rust_test_helpers.c");
181 if up_to_date(&src, &dst.join("librust_test_helpers.a")) {
185 println!("Building test helpers");
186 t!(fs::create_dir_all(&dst));
187 let mut cfg = gcc::Config::new();
189 // We may have found various cross-compilers a little differently due to our
190 // extra configuration, so inform gcc of these compilers. Note, though, that
191 // on MSVC we still need gcc's detection of env vars (ugh).
192 if !target.contains("msvc") {
193 if let Some(ar) = build.ar(target) {
196 cfg.compiler(build.cc(target));
199 cfg.cargo_metadata(false)
202 .host(&build.config.build)
205 .file(build.src.join("src/rt/rust_test_helpers.c"))
206 .compile("librust_test_helpers.a");
208 const OPENSSL_VERS: &'static str = "1.0.2k";
209 const OPENSSL_SHA256: &'static str =
210 "6b3977c61f2aedf0f96367dcfb5c6e578cf37e7b8d913b4ecb6643c3cb88d8c0";
212 pub fn openssl(build: &Build, target: &str) {
213 let out = match build.openssl_dir(target) {
218 let stamp = out.join(".stamp");
219 let mut contents = String::new();
220 drop(File::open(&stamp).and_then(|mut f| f.read_to_string(&mut contents)));
221 if contents == OPENSSL_VERS {
224 t!(fs::create_dir_all(&out));
226 let name = format!("openssl-{}.tar.gz", OPENSSL_VERS);
227 let tarball = out.join(&name);
228 if !tarball.exists() {
229 let tmp = tarball.with_extension("tmp");
230 // originally from https://www.openssl.org/source/...
231 let url = format!("https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/{}",
235 let status = Command::new("curl")
239 .expect("failed to spawn curl");
240 if status.success() {
246 panic!("failed to download openssl source")
248 let mut shasum = if target.contains("apple") {
249 let mut cmd = Command::new("shasum");
250 cmd.arg("-a").arg("256");
253 Command::new("sha256sum")
255 let output = output(&mut shasum.arg(&tmp));
256 let found = output.split_whitespace().next().unwrap();
257 if found != OPENSSL_SHA256 {
258 panic!("downloaded openssl sha256 different\n\
260 found: {}\n", OPENSSL_SHA256, found);
262 t!(fs::rename(&tmp, &tarball));
264 let obj = out.join(format!("openssl-{}", OPENSSL_VERS));
265 let dst = build.openssl_install_dir(target).unwrap();
266 drop(fs::remove_dir_all(&obj));
267 drop(fs::remove_dir_all(&dst));
268 build.run(Command::new("tar").arg("xf").arg(&tarball).current_dir(&out));
270 let mut configure = Command::new(obj.join("Configure"));
271 configure.arg(format!("--prefix={}", dst.display()));
272 configure.arg("no-dso");
273 configure.arg("no-ssl2");
274 configure.arg("no-ssl3");
276 let os = match target {
277 "aarch64-unknown-linux-gnu" => "linux-aarch64",
278 "arm-unknown-linux-gnueabi" => "linux-armv4",
279 "arm-unknown-linux-gnueabihf" => "linux-armv4",
280 "armv7-unknown-linux-gnueabihf" => "linux-armv4",
281 "i686-apple-darwin" => "darwin-i386-cc",
282 "i686-unknown-freebsd" => "BSD-x86-elf",
283 "i686-unknown-linux-gnu" => "linux-elf",
284 "i686-unknown-linux-musl" => "linux-elf",
285 "mips-unknown-linux-gnu" => "linux-mips32",
286 "mips64-unknown-linux-gnuabi64" => "linux64-mips64",
287 "mips64el-unknown-linux-gnuabi64" => "linux64-mips64",
288 "mipsel-unknown-linux-gnu" => "linux-mips32",
289 "powerpc-unknown-linux-gnu" => "linux-ppc",
290 "powerpc64-unknown-linux-gnu" => "linux-ppc64",
291 "powerpc64le-unknown-linux-gnu" => "linux-ppc64le",
292 "s390x-unknown-linux-gnu" => "linux64-s390x",
293 "x86_64-apple-darwin" => "darwin64-x86_64-cc",
294 "x86_64-unknown-freebsd" => "BSD-x86_64",
295 "x86_64-unknown-linux-gnu" => "linux-x86_64",
296 "x86_64-unknown-linux-musl" => "linux-x86_64",
297 "x86_64-unknown-netbsd" => "BSD-x86_64",
298 _ => panic!("don't know how to configure OpenSSL for {}", target),
301 configure.env("CC", build.cc(target));
302 for flag in build.cflags(target) {
305 configure.current_dir(&obj);
306 println!("Configuring openssl for {}", target);
307 build.run_quiet(&mut configure);
308 println!("Building openssl for {}", target);
309 build.run_quiet(Command::new("make").current_dir(&obj));
310 println!("Installing openssl for {}", target);
311 build.run_quiet(Command::new("make").arg("install").current_dir(&obj));
313 let mut f = t!(File::create(&stamp));
314 t!(f.write_all(OPENSSL_VERS.as_bytes()));