src/bootstrap/native.rs

   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.
   4 //
   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.
  10
  11 //! Compilation of native dependencies like LLVM.
  12 //!
  13 //! Native projects like LLVM unfortunately aren't suited just yet for
  14 //! compilation in build scripts that Cargo has. This is because the
  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).
  17 //!
  18 //! LLVM and compiler-rt are essentially just wired up to everything else to
  19 //! ensure that they're always in place if needed.
  20
  21 use std::env;
  22 use std::ffi::OsString;
  23 use std::fs::{self, File};
  24 use std::io::{Read, Write};
  25 use std::path::Path;
  26 use std::process::Command;
  27
  28 use build_helper::output;
  29 use cmake;
  30 use cc;
  31
  32 use Build;
  33 use util;
  34 use build_helper::up_to_date;
  35 use builder::{Builder, RunConfig, ShouldRun, Step};
  36 use cache::Interned;
  37
  38 #[derive(Debug, Copy, Clone, Hash, PartialEq, Eq)]
  39 pub struct Llvm {
  40     pub target: Interned<String>,
  41 }
  42
  43 impl Step for Llvm {
  44     type Output = ();
  45     const ONLY_HOSTS: bool = true;
  46
  47     fn should_run(run: ShouldRun) -> ShouldRun {
  48         run.path("src/llvm")
  49     }
  50
  51     fn make_run(run: RunConfig) {
  52         run.builder.ensure(Llvm { target: run.target })
  53     }
  54
  55     /// Compile LLVM for `target`.
  56     fn run(self, builder: &Builder) {
  57         let build = builder.build;
  58         let target = self.target;
  59
  60         // If we're not compiling for LLVM bail out here.
  61         if !build.config.llvm_enabled {
  62             return;
  63         }
  64
  65         // If we're using a custom LLVM bail out here, but we can only use a
  66         // custom LLVM for the build triple.
  67         if let Some(config) = build.config.target_config.get(&target) {
  68             if let Some(ref s) = config.llvm_config {
  69                 return check_llvm_version(build, s);
  70             }
  71         }
  72
  73         let rebuild_trigger = build.src.join("src/rustllvm/llvm-rebuild-trigger");
  74         let mut rebuild_trigger_contents = String::new();
  75         t!(t!(File::open(&rebuild_trigger)).read_to_string(&mut rebuild_trigger_contents));
  76
  77         let out_dir = build.llvm_out(target);
  78         let done_stamp = out_dir.join("llvm-finished-building");
  79         if done_stamp.exists() {
  80             let mut done_contents = String::new();
  81             t!(t!(File::open(&done_stamp)).read_to_string(&mut done_contents));
  82
  83             // If LLVM was already built previously and contents of the rebuild-trigger file
  84             // didn't change from the previous build, then no action is required.
  85             if done_contents == rebuild_trigger_contents {
  86                 return
  87             }
  88         }
  89
  90         let _folder = build.fold_output(|| "llvm");
  91         println!("Building LLVM for {}", target);
  92         let _time = util::timeit();
  93         t!(fs::create_dir_all(&out_dir));
  94
  95         // http://llvm.org/docs/CMake.html
  96         let mut cfg = cmake::Config::new(build.src.join("src/llvm"));
  97         if build.config.ninja {
  98             cfg.generator("Ninja");
  99         }
 100
 101         let profile = match (build.config.llvm_optimize, build.config.llvm_release_debuginfo) {
 102             (false, _) => "Debug",
 103             (true, false) => "Release",
 104             (true, true) => "RelWithDebInfo",
 105         };
 106
 107         // NOTE: remember to also update `config.toml.example` when changing the defaults!
 108         let llvm_targets = match build.config.llvm_targets {
 109             Some(ref s) => s,
 110             None => "X86;ARM;AArch64;Mips;PowerPC;SystemZ;JSBackend;MSP430;Sparc;NVPTX;Hexagon",
 111         };
 112
 113         let llvm_exp_targets = match build.config.llvm_experimental_targets {
 114             Some(ref s) => s,
 115             None => "",
 116         };
 117
 118         let assertions = if build.config.llvm_assertions {"ON"} else {"OFF"};
 119
 120         cfg.target(&target)
 121            .host(&build.build)
 122            .out_dir(&out_dir)
 123            .profile(profile)
 124            .define("LLVM_ENABLE_ASSERTIONS", assertions)
 125            .define("LLVM_TARGETS_TO_BUILD", llvm_targets)
 126            .define("LLVM_EXPERIMENTAL_TARGETS_TO_BUILD", llvm_exp_targets)
 127            .define("LLVM_INCLUDE_EXAMPLES", "OFF")
 128            .define("LLVM_INCLUDE_TESTS", "OFF")
 129            .define("LLVM_INCLUDE_DOCS", "OFF")
 130            .define("LLVM_ENABLE_ZLIB", "OFF")
 131            .define("WITH_POLLY", "OFF")
 132            .define("LLVM_ENABLE_TERMINFO", "OFF")
 133            .define("LLVM_ENABLE_LIBEDIT", "OFF")
 134            .define("LLVM_PARALLEL_COMPILE_JOBS", build.jobs().to_string())
 135            .define("LLVM_TARGET_ARCH", target.split('-').next().unwrap())
 136            .define("LLVM_DEFAULT_TARGET_TRIPLE", target);
 137
 138
 139         // This setting makes the LLVM tools link to the dynamic LLVM library,
 140         // which saves both memory during parallel links and overall disk space
 141         // for the tools.  We don't distribute any of those tools, so this is
 142         // just a local concern.  However, it doesn't work well everywhere.
 143         if target.contains("linux-gnu") || target.contains("apple-darwin") {
 144            cfg.define("LLVM_LINK_LLVM_DYLIB", "ON");
 145         }
 146
 147         if target.contains("msvc") {
 148             cfg.define("LLVM_USE_CRT_DEBUG", "MT");
 149             cfg.define("LLVM_USE_CRT_RELEASE", "MT");
 150             cfg.define("LLVM_USE_CRT_RELWITHDEBINFO", "MT");
 151             cfg.static_crt(true);
 152         }
 153
 154         if target.starts_with("i686") {
 155             cfg.define("LLVM_BUILD_32_BITS", "ON");
 156         }
 157
 158         if let Some(num_linkers) = build.config.llvm_link_jobs {
 159             if num_linkers > 0 {
 160                 cfg.define("LLVM_PARALLEL_LINK_JOBS", num_linkers.to_string());
 161             }
 162         }
 163
 164         // http://llvm.org/docs/HowToCrossCompileLLVM.html
 165         if target != build.build {
 166             builder.ensure(Llvm { target: build.build });
 167             // FIXME: if the llvm root for the build triple is overridden then we
 168             //        should use llvm-tblgen from there, also should verify that it
 169             //        actually exists most of the time in normal installs of LLVM.
 170             let host = build.llvm_out(build.build).join("bin/llvm-tblgen");
 171             cfg.define("CMAKE_CROSSCOMPILING", "True")
 172                .define("LLVM_TABLEGEN", &host);
 173
 174             if target.contains("netbsd") {
 175                cfg.define("CMAKE_SYSTEM_NAME", "NetBSD");
 176             } else if target.contains("freebsd") {
 177                cfg.define("CMAKE_SYSTEM_NAME", "FreeBSD");
 178             }
 179
 180             cfg.define("LLVM_NATIVE_BUILD", build.llvm_out(build.build).join("build"));
 181         }
 182
 183         let sanitize_cc = |cc: &Path| {
 184             if target.contains("msvc") {
 185                 OsString::from(cc.to_str().unwrap().replace("\\", "/"))
 186             } else {
 187                 cc.as_os_str().to_owned()
 188             }
 189         };
 190
 191         let configure_compilers = |cfg: &mut cmake::Config| {
 192             // MSVC with CMake uses msbuild by default which doesn't respect these
 193             // vars that we'd otherwise configure. In that case we just skip this
 194             // entirely.
 195             if target.contains("msvc") && !build.config.ninja {
 196                 return
 197             }
 198
 199             let cc = build.cc(target);
 200             let cxx = build.cxx(target).unwrap();
 201
 202             // Handle msvc + ninja + ccache specially (this is what the bots use)
 203             if target.contains("msvc") &&
 204                build.config.ninja &&
 205                build.config.ccache.is_some() {
 206                 let mut cc = env::current_exe().expect("failed to get cwd");
 207                 cc.set_file_name("sccache-plus-cl.exe");
 208
 209                cfg.define("CMAKE_C_COMPILER", sanitize_cc(&cc))
 210                   .define("CMAKE_CXX_COMPILER", sanitize_cc(&cc));
 211                cfg.env("SCCACHE_PATH",
 212                        build.config.ccache.as_ref().unwrap())
 213                   .env("SCCACHE_TARGET", target);
 214
 215             // If ccache is configured we inform the build a little differently hwo
 216             // to invoke ccache while also invoking our compilers.
 217             } else if let Some(ref ccache) = build.config.ccache {
 218                cfg.define("CMAKE_C_COMPILER", ccache)
 219                   .define("CMAKE_C_COMPILER_ARG1", sanitize_cc(cc))
 220                   .define("CMAKE_CXX_COMPILER", ccache)
 221                   .define("CMAKE_CXX_COMPILER_ARG1", sanitize_cc(cxx));
 222             } else {
 223                cfg.define("CMAKE_C_COMPILER", sanitize_cc(cc))
 224                   .define("CMAKE_CXX_COMPILER", sanitize_cc(cxx));
 225             }
 226
 227             cfg.build_arg("-j").build_arg(build.jobs().to_string());
 228             cfg.define("CMAKE_C_FLAGS", build.cflags(target).join(" "));
 229             cfg.define("CMAKE_CXX_FLAGS", build.cflags(target).join(" "));
 230             if let Some(ar) = build.ar(target) {
 231                 if ar.is_absolute() {
 232                     // LLVM build breaks if `CMAKE_AR` is a relative path, for some reason it
 233                     // tries to resolve this path in the LLVM build directory.
 234                     cfg.define("CMAKE_AR", sanitize_cc(ar));
 235                 }
 236             }
 237         };
 238
 239         configure_compilers(&mut cfg);
 240
 241         if env::var_os("SCCACHE_ERROR_LOG").is_some() {
 242             cfg.env("RUST_LOG", "sccache=warn");
 243         }
 244
 245         // FIXME: we don't actually need to build all LLVM tools and all LLVM
 246         //        libraries here, e.g. we just want a few components and a few
 247         //        tools. Figure out how to filter them down and only build the right
 248         //        tools and libs on all platforms.
 249         cfg.build();
 250
 251         t!(t!(File::create(&done_stamp)).write_all(rebuild_trigger_contents.as_bytes()));
 252     }
 253 }
 254
 255 fn check_llvm_version(build: &Build, llvm_config: &Path) {
 256     if !build.config.llvm_version_check {
 257         return
 258     }
 259
 260     let mut cmd = Command::new(llvm_config);
 261     let version = output(cmd.arg("--version"));
 262     let mut parts = version.split('.').take(2)
 263         .filter_map(|s| s.parse::<u32>().ok());
 264     if let (Some(major), Some(minor)) = (parts.next(), parts.next()) {
 265         if major > 3 || (major == 3 && minor >= 9) {
 266             return
 267         }
 268     }
 269     panic!("\n\nbad LLVM version: {}, need >=3.9\n\n", version)
 270 }
 271
 272 #[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
 273 pub struct TestHelpers {
 274     pub target: Interned<String>,
 275 }
 276
 277 impl Step for TestHelpers {
 278     type Output = ();
 279
 280     fn should_run(run: ShouldRun) -> ShouldRun {
 281         run.path("src/rt/rust_test_helpers.c")
 282     }
 283
 284     fn make_run(run: RunConfig) {
 285         run.builder.ensure(TestHelpers { target: run.target })
 286     }
 287
 288     /// Compiles the `rust_test_helpers.c` library which we used in various
 289     /// `run-pass` test suites for ABI testing.
 290     fn run(self, builder: &Builder) {
 291         let build = builder.build;
 292         let target = self.target;
 293         let dst = build.test_helpers_out(target);
 294         let src = build.src.join("src/rt/rust_test_helpers.c");
 295         if up_to_date(&src, &dst.join("librust_test_helpers.a")) {
 296             return
 297         }
 298
 299         let _folder = build.fold_output(|| "build_test_helpers");
 300         println!("Building test helpers");
 301         t!(fs::create_dir_all(&dst));
 302         let mut cfg = cc::Build::new();
 303
 304         // We may have found various cross-compilers a little differently due to our
 305         // extra configuration, so inform gcc of these compilers. Note, though, that
 306         // on MSVC we still need gcc's detection of env vars (ugh).
 307         if !target.contains("msvc") {
 308             if let Some(ar) = build.ar(target) {
 309                 cfg.archiver(ar);
 310             }
 311             cfg.compiler(build.cc(target));
 312         }
 313
 314         cfg.cargo_metadata(false)
 315            .out_dir(&dst)
 316            .target(&target)
 317            .host(&build.build)
 318            .opt_level(0)
 319            .warnings(false)
 320            .debug(false)
 321            .file(build.src.join("src/rt/rust_test_helpers.c"))
 322            .compile("librust_test_helpers.a");
 323     }
 324 }
 325
 326 const OPENSSL_VERS: &'static str = "1.0.2k";
 327 const OPENSSL_SHA256: &'static str =
 328     "6b3977c61f2aedf0f96367dcfb5c6e578cf37e7b8d913b4ecb6643c3cb88d8c0";
 329
 330 #[derive(Debug, Copy, Clone, Hash, PartialEq, Eq)]
 331 pub struct Openssl {
 332     pub target: Interned<String>,
 333 }
 334
 335 impl Step for Openssl {
 336     type Output = ();
 337
 338     fn should_run(run: ShouldRun) -> ShouldRun {
 339         run.never()
 340     }
 341
 342     fn run(self, builder: &Builder) {
 343         let build = builder.build;
 344         let target = self.target;
 345         let out = match build.openssl_dir(target) {
 346             Some(dir) => dir,
 347             None => return,
 348         };
 349
 350         let stamp = out.join(".stamp");
 351         let mut contents = String::new();
 352         drop(File::open(&stamp).and_then(|mut f| f.read_to_string(&mut contents)));
 353         if contents == OPENSSL_VERS {
 354             return
 355         }
 356         t!(fs::create_dir_all(&out));
 357
 358         let name = format!("openssl-{}.tar.gz", OPENSSL_VERS);
 359         let tarball = out.join(&name);
 360         if !tarball.exists() {
 361             let tmp = tarball.with_extension("tmp");
 362             // originally from https://www.openssl.org/source/...
 363             let url = format!("https://s3-us-west-1.amazonaws.com/rust-lang-ci2/rust-ci-mirror/{}",
 364                               name);
 365             let mut last_error = None;
 366             for _ in 0..3 {
 367                 let status = Command::new("curl")
 368                                 .arg("-o").arg(&tmp)
 369                                 .arg("-f")  // make curl fail if the URL does not return HTTP 200
 370                                 .arg(&url)
 371                                 .status()
 372                                 .expect("failed to spawn curl");
 373
 374                 // Retry if download failed.
 375                 if !status.success() {
 376                     last_error = Some(status.to_string());
 377                     continue;
 378                 }
 379
 380                 // Ensure the hash is correct.
 381                 let mut shasum = if target.contains("apple") || build.build.contains("netbsd") {
 382                     let mut cmd = Command::new("shasum");
 383                     cmd.arg("-a").arg("256");
 384                     cmd
 385                 } else {
 386                     Command::new("sha256sum")
 387                 };
 388                 let output = output(&mut shasum.arg(&tmp));
 389                 let found = output.split_whitespace().next().unwrap();
 390
 391                 // If the hash is wrong, probably the download is incomplete or S3 served an error
 392                 // page. In any case, retry.
 393                 if found != OPENSSL_SHA256 {
 394                     last_error = Some(format!(
 395                         "downloaded openssl sha256 different\n\
 396                          expected: {}\n\
 397                          found:    {}\n",
 398                         OPENSSL_SHA256,
 399                         found
 400                     ));
 401                     continue;
 402                 }
 403
 404                 // Everything is fine, so exit the retry loop.
 405                 last_error = None;
 406                 break;
 407             }
 408             if let Some(error) = last_error {
 409                 panic!("failed to download openssl source: {}", error);
 410             }
 411             t!(fs::rename(&tmp, &tarball));
 412         }
 413         let obj = out.join(format!("openssl-{}", OPENSSL_VERS));
 414         let dst = build.openssl_install_dir(target).unwrap();
 415         drop(fs::remove_dir_all(&obj));
 416         drop(fs::remove_dir_all(&dst));
 417         build.run(Command::new("tar").arg("zxf").arg(&tarball).current_dir(&out));
 418
 419         let mut configure = Command::new("perl");
 420         configure.arg(obj.join("Configure"));
 421         configure.arg(format!("--prefix={}", dst.display()));
 422         configure.arg("no-dso");
 423         configure.arg("no-ssl2");
 424         configure.arg("no-ssl3");
 425
 426         let os = match &*target {
 427             "aarch64-linux-android" => "linux-aarch64",
 428             "aarch64-unknown-linux-gnu" => "linux-aarch64",
 429             "aarch64-unknown-linux-musl" => "linux-aarch64",
 430             "arm-linux-androideabi" => "android",
 431             "arm-unknown-linux-gnueabi" => "linux-armv4",
 432             "arm-unknown-linux-gnueabihf" => "linux-armv4",
 433             "armv7-linux-androideabi" => "android-armv7",
 434             "armv7-unknown-linux-gnueabihf" => "linux-armv4",
 435             "i686-apple-darwin" => "darwin-i386-cc",
 436             "i686-linux-android" => "android-x86",
 437             "i686-unknown-freebsd" => "BSD-x86-elf",
 438             "i686-unknown-linux-gnu" => "linux-elf",
 439             "i686-unknown-linux-musl" => "linux-elf",
 440             "i686-unknown-netbsd" => "BSD-x86-elf",
 441             "mips-unknown-linux-gnu" => "linux-mips32",
 442             "mips64-unknown-linux-gnuabi64" => "linux64-mips64",
 443             "mips64el-unknown-linux-gnuabi64" => "linux64-mips64",
 444             "mipsel-unknown-linux-gnu" => "linux-mips32",
 445             "powerpc-unknown-linux-gnu" => "linux-ppc",
 446             "powerpc64-unknown-linux-gnu" => "linux-ppc64",
 447             "powerpc64le-unknown-linux-gnu" => "linux-ppc64le",
 448             "s390x-unknown-linux-gnu" => "linux64-s390x",
 449             "sparc64-unknown-linux-gnu" => "linux64-sparcv9",
 450             "sparc64-unknown-netbsd" => "BSD-sparc64",
 451             "x86_64-apple-darwin" => "darwin64-x86_64-cc",
 452             "x86_64-linux-android" => "linux-x86_64",
 453             "x86_64-unknown-freebsd" => "BSD-x86_64",
 454             "x86_64-unknown-linux-gnu" => "linux-x86_64",
 455             "x86_64-unknown-linux-musl" => "linux-x86_64",
 456             "x86_64-unknown-netbsd" => "BSD-x86_64",
 457             _ => panic!("don't know how to configure OpenSSL for {}", target),
 458         };
 459         configure.arg(os);
 460         configure.env("CC", build.cc(target));
 461         for flag in build.cflags(target) {
 462             configure.arg(flag);
 463         }
 464         // There is no specific os target for android aarch64 or x86_64,
 465         // so we need to pass some extra cflags
 466         if target == "aarch64-linux-android" || target == "x86_64-linux-android" {
 467             configure.arg("-mandroid");
 468             configure.arg("-fomit-frame-pointer");
 469         }
 470         if target == "sparc64-unknown-netbsd" {
 471             // Need -m64 to get assembly generated correctly for sparc64.
 472             configure.arg("-m64");
 473             if build.build.contains("netbsd") {
 474                 // Disable sparc64 asm on NetBSD builders, it uses
 475                 // m4(1)'s -B flag, which NetBSD m4 does not support.
 476                 configure.arg("no-asm");
 477             }
 478         }
 479         // Make PIE binaries
 480         // Non-PIE linker support was removed in Lollipop
 481         // https://source.android.com/security/enhancements/enhancements50
 482         if target == "i686-linux-android" {
 483             configure.arg("no-asm");
 484         }
 485         configure.current_dir(&obj);
 486         println!("Configuring openssl for {}", target);
 487         build.run_quiet(&mut configure);
 488         println!("Building openssl for {}", target);
 489         build.run_quiet(Command::new("make").arg("-j1").current_dir(&obj));
 490         println!("Installing openssl for {}", target);
 491         build.run_quiet(Command::new("make").arg("install").current_dir(&obj));
 492
 493         let mut f = t!(File::create(&stamp));
 494         t!(f.write_all(OPENSSL_VERS.as_bytes()));
 495     }
 496 }