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 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).
  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 gcc;
  31
  32 use Build;
  33 use util;
  34 use build_helper::up_to_date;
  35
  36 /// Compile LLVM for `target`.
  37 pub fn llvm(build: &Build, target: &str) {
  38     // If we're using a custom LLVM bail out here, but we can only use a
  39     // custom LLVM for the build triple.
  40     if let Some(config) = build.config.target_config.get(target) {
  41         if let Some(ref s) = config.llvm_config {
  42             return check_llvm_version(build, s);
  43         }
  44     }
  45
  46     let rebuild_trigger = build.src.join("src/rustllvm/llvm-rebuild-trigger");
  47     let mut rebuild_trigger_contents = String::new();
  48     t!(t!(File::open(&rebuild_trigger)).read_to_string(&mut rebuild_trigger_contents));
  49
  50     let out_dir = build.llvm_out(target);
  51     let done_stamp = out_dir.join("llvm-finished-building");
  52     if done_stamp.exists() {
  53         let mut done_contents = String::new();
  54         t!(t!(File::open(&done_stamp)).read_to_string(&mut done_contents));
  55
  56         // If LLVM was already built previously and contents of the rebuild-trigger file
  57         // didn't change from the previous build, then no action is required.
  58         if done_contents == rebuild_trigger_contents {
  59             return
  60         }
  61     }
  62     if build.config.llvm_clean_rebuild {
  63         drop(fs::remove_dir_all(&out_dir));
  64     }
  65
  66     let _folder = build.fold_output(|| "llvm");
  67     println!("Building LLVM for {}", target);
  68     let _time = util::timeit();
  69     t!(fs::create_dir_all(&out_dir));
  70
  71     // http://llvm.org/docs/CMake.html
  72     let mut cfg = cmake::Config::new(build.src.join("src/llvm"));
  73     if build.config.ninja {
  74         cfg.generator("Ninja");
  75     }
  76
  77     let profile = match (build.config.llvm_optimize, build.config.llvm_release_debuginfo) {
  78         (false, _) => "Debug",
  79         (true, false) => "Release",
  80         (true, true) => "RelWithDebInfo",
  81     };
  82
  83     // NOTE: remember to also update `config.toml.example` when changing the defaults!
  84     let llvm_targets = match build.config.llvm_targets {
  85         Some(ref s) => s,
  86         None => "X86;ARM;AArch64;Mips;PowerPC;SystemZ;JSBackend;MSP430;Sparc;NVPTX;Hexagon",
  87     };
  88
  89     let assertions = if build.config.llvm_assertions {"ON"} else {"OFF"};
  90
  91     cfg.target(target)
  92        .host(&build.config.build)
  93        .out_dir(&out_dir)
  94        .profile(profile)
  95        .define("LLVM_ENABLE_ASSERTIONS", assertions)
  96        .define("LLVM_TARGETS_TO_BUILD", llvm_targets)
  97        .define("LLVM_INCLUDE_EXAMPLES", "OFF")
  98        .define("LLVM_INCLUDE_TESTS", "OFF")
  99        .define("LLVM_INCLUDE_DOCS", "OFF")
 100        .define("LLVM_ENABLE_ZLIB", "OFF")
 101        .define("WITH_POLLY", "OFF")
 102        .define("LLVM_ENABLE_TERMINFO", "OFF")
 103        .define("LLVM_ENABLE_LIBEDIT", "OFF")
 104        .define("LLVM_PARALLEL_COMPILE_JOBS", build.jobs().to_string())
 105        .define("LLVM_TARGET_ARCH", target.split('-').next().unwrap())
 106        .define("LLVM_DEFAULT_TARGET_TRIPLE", target);
 107
 108     if target.contains("msvc") {
 109         cfg.define("LLVM_USE_CRT_DEBUG", "MT");
 110         cfg.define("LLVM_USE_CRT_RELEASE", "MT");
 111         cfg.define("LLVM_USE_CRT_RELWITHDEBINFO", "MT");
 112         cfg.static_crt(true);
 113     }
 114
 115     if target.starts_with("i686") {
 116         cfg.define("LLVM_BUILD_32_BITS", "ON");
 117     }
 118
 119     if let Some(num_linkers) = build.config.llvm_link_jobs {
 120         if num_linkers > 0 {
 121             cfg.define("LLVM_PARALLEL_LINK_JOBS", num_linkers.to_string());
 122         }
 123     }
 124
 125     // http://llvm.org/docs/HowToCrossCompileLLVM.html
 126     if target != build.config.build {
 127         // FIXME: if the llvm root for the build triple is overridden then we
 128         //        should use llvm-tblgen from there, also should verify that it
 129         //        actually exists most of the time in normal installs of LLVM.
 130         let host = build.llvm_out(&build.config.build).join("bin/llvm-tblgen");
 131         cfg.define("CMAKE_CROSSCOMPILING", "True")
 132            .define("LLVM_TABLEGEN", &host);
 133     }
 134
 135     let sanitize_cc = |cc: &Path| {
 136         if target.contains("msvc") {
 137             OsString::from(cc.to_str().unwrap().replace("\\", "/"))
 138         } else {
 139             cc.as_os_str().to_owned()
 140         }
 141     };
 142
 143     let configure_compilers = |cfg: &mut cmake::Config| {
 144         // MSVC with CMake uses msbuild by default which doesn't respect these
 145         // vars that we'd otherwise configure. In that case we just skip this
 146         // entirely.
 147         if target.contains("msvc") && !build.config.ninja {
 148             return
 149         }
 150
 151         let cc = build.cc(target);
 152         let cxx = build.cxx(target);
 153
 154         // Handle msvc + ninja + ccache specially (this is what the bots use)
 155         if target.contains("msvc") &&
 156            build.config.ninja &&
 157            build.config.ccache.is_some() {
 158             let mut cc = env::current_exe().expect("failed to get cwd");
 159             cc.set_file_name("sccache-plus-cl.exe");
 160
 161            cfg.define("CMAKE_C_COMPILER", sanitize_cc(&cc))
 162               .define("CMAKE_CXX_COMPILER", sanitize_cc(&cc));
 163            cfg.env("SCCACHE_PATH",
 164                    build.config.ccache.as_ref().unwrap())
 165               .env("SCCACHE_TARGET", target);
 166
 167         // If ccache is configured we inform the build a little differently hwo
 168         // to invoke ccache while also invoking our compilers.
 169         } else if let Some(ref ccache) = build.config.ccache {
 170            cfg.define("CMAKE_C_COMPILER", ccache)
 171               .define("CMAKE_C_COMPILER_ARG1", sanitize_cc(cc))
 172               .define("CMAKE_CXX_COMPILER", ccache)
 173               .define("CMAKE_CXX_COMPILER_ARG1", sanitize_cc(cxx));
 174         } else {
 175            cfg.define("CMAKE_C_COMPILER", sanitize_cc(cc))
 176               .define("CMAKE_CXX_COMPILER", sanitize_cc(cxx));
 177         }
 178
 179         cfg.build_arg("-j").build_arg(build.jobs().to_string());
 180         cfg.define("CMAKE_C_FLAGS", build.cflags(target).join(" "));
 181         cfg.define("CMAKE_CXX_FLAGS", build.cflags(target).join(" "));
 182     };
 183
 184     configure_compilers(&mut cfg);
 185
 186     if env::var_os("SCCACHE_ERROR_LOG").is_some() {
 187         cfg.env("RUST_LOG", "sccache=info");
 188     }
 189
 190     // FIXME: we don't actually need to build all LLVM tools and all LLVM
 191     //        libraries here, e.g. we just want a few components and a few
 192     //        tools. Figure out how to filter them down and only build the right
 193     //        tools and libs on all platforms.
 194     cfg.build();
 195
 196     t!(t!(File::create(&done_stamp)).write_all(rebuild_trigger_contents.as_bytes()));
 197 }
 198
 199 fn check_llvm_version(build: &Build, llvm_config: &Path) {
 200     if !build.config.llvm_version_check {
 201         return
 202     }
 203
 204     let mut cmd = Command::new(llvm_config);
 205     let version = output(cmd.arg("--version"));
 206     if version.starts_with("3.5") || version.starts_with("3.6") ||
 207        version.starts_with("3.7") {
 208         return
 209     }
 210     panic!("\n\nbad LLVM version: {}, need >=3.5\n\n", version)
 211 }
 212
 213 /// Compiles the `rust_test_helpers.c` library which we used in various
 214 /// `run-pass` test suites for ABI testing.
 215 pub fn test_helpers(build: &Build, target: &str) {
 216     let dst = build.test_helpers_out(target);
 217     let src = build.src.join("src/rt/rust_test_helpers.c");
 218     if up_to_date(&src, &dst.join("librust_test_helpers.a")) {
 219         return
 220     }
 221
 222     let _folder = build.fold_output(|| "build_test_helpers");
 223     println!("Building test helpers");
 224     t!(fs::create_dir_all(&dst));
 225     let mut cfg = gcc::Config::new();
 226
 227     // We may have found various cross-compilers a little differently due to our
 228     // extra configuration, so inform gcc of these compilers. Note, though, that
 229     // on MSVC we still need gcc's detection of env vars (ugh).
 230     if !target.contains("msvc") {
 231         if let Some(ar) = build.ar(target) {
 232             cfg.archiver(ar);
 233         }
 234         cfg.compiler(build.cc(target));
 235     }
 236
 237     cfg.cargo_metadata(false)
 238        .out_dir(&dst)
 239        .target(target)
 240        .host(&build.config.build)
 241        .opt_level(0)
 242        .debug(false)
 243        .file(build.src.join("src/rt/rust_test_helpers.c"))
 244        .compile("librust_test_helpers.a");
 245 }
 246 const OPENSSL_VERS: &'static str = "1.0.2k";
 247 const OPENSSL_SHA256: &'static str =
 248     "6b3977c61f2aedf0f96367dcfb5c6e578cf37e7b8d913b4ecb6643c3cb88d8c0";
 249
 250 pub fn openssl(build: &Build, target: &str) {
 251     let out = match build.openssl_dir(target) {
 252         Some(dir) => dir,
 253         None => return,
 254     };
 255
 256     let stamp = out.join(".stamp");
 257     let mut contents = String::new();
 258     drop(File::open(&stamp).and_then(|mut f| f.read_to_string(&mut contents)));
 259     if contents == OPENSSL_VERS {
 260         return
 261     }
 262     t!(fs::create_dir_all(&out));
 263
 264     let name = format!("openssl-{}.tar.gz", OPENSSL_VERS);
 265     let tarball = out.join(&name);
 266     if !tarball.exists() {
 267         let tmp = tarball.with_extension("tmp");
 268         // originally from https://www.openssl.org/source/...
 269         let url = format!("https://s3.amazonaws.com/rust-lang-ci/rust-ci-mirror/{}",
 270                           name);
 271         let mut ok = false;
 272         for _ in 0..3 {
 273             let status = Command::new("curl")
 274                             .arg("-o").arg(&tmp)
 275                             .arg(&url)
 276                             .status()
 277                             .expect("failed to spawn curl");
 278             if status.success() {
 279                 ok = true;
 280                 break
 281             }
 282         }
 283         if !ok {
 284             panic!("failed to download openssl source")
 285         }
 286         let mut shasum = if target.contains("apple") {
 287             let mut cmd = Command::new("shasum");
 288             cmd.arg("-a").arg("256");
 289             cmd
 290         } else {
 291             Command::new("sha256sum")
 292         };
 293         let output = output(&mut shasum.arg(&tmp));
 294         let found = output.split_whitespace().next().unwrap();
 295         if found != OPENSSL_SHA256 {
 296             panic!("downloaded openssl sha256 different\n\
 297                     expected: {}\n\
 298                     found:    {}\n", OPENSSL_SHA256, found);
 299         }
 300         t!(fs::rename(&tmp, &tarball));
 301     }
 302     let obj = out.join(format!("openssl-{}", OPENSSL_VERS));
 303     let dst = build.openssl_install_dir(target).unwrap();
 304     drop(fs::remove_dir_all(&obj));
 305     drop(fs::remove_dir_all(&dst));
 306     build.run(Command::new("tar").arg("xf").arg(&tarball).current_dir(&out));
 307
 308     let mut configure = Command::new(obj.join("Configure"));
 309     configure.arg(format!("--prefix={}", dst.display()));
 310     configure.arg("no-dso");
 311     configure.arg("no-ssl2");
 312     configure.arg("no-ssl3");
 313
 314     let os = match target {
 315         "aarch64-linux-android" => "linux-aarch64",
 316         "aarch64-unknown-linux-gnu" => "linux-aarch64",
 317         "arm-linux-androideabi" => "android",
 318         "arm-unknown-linux-gnueabi" => "linux-armv4",
 319         "arm-unknown-linux-gnueabihf" => "linux-armv4",
 320         "armv7-linux-androideabi" => "android-armv7",
 321         "armv7-unknown-linux-gnueabihf" => "linux-armv4",
 322         "i686-apple-darwin" => "darwin-i386-cc",
 323         "i686-linux-android" => "android-x86",
 324         "i686-unknown-freebsd" => "BSD-x86-elf",
 325         "i686-unknown-linux-gnu" => "linux-elf",
 326         "i686-unknown-linux-musl" => "linux-elf",
 327         "mips-unknown-linux-gnu" => "linux-mips32",
 328         "mips64-unknown-linux-gnuabi64" => "linux64-mips64",
 329         "mips64el-unknown-linux-gnuabi64" => "linux64-mips64",
 330         "mipsel-unknown-linux-gnu" => "linux-mips32",
 331         "powerpc-unknown-linux-gnu" => "linux-ppc",
 332         "powerpc64-unknown-linux-gnu" => "linux-ppc64",
 333         "powerpc64le-unknown-linux-gnu" => "linux-ppc64le",
 334         "s390x-unknown-linux-gnu" => "linux64-s390x",
 335         "x86_64-apple-darwin" => "darwin64-x86_64-cc",
 336         "x86_64-linux-android" => "linux-x86_64",
 337         "x86_64-unknown-freebsd" => "BSD-x86_64",
 338         "x86_64-unknown-linux-gnu" => "linux-x86_64",
 339         "x86_64-unknown-linux-musl" => "linux-x86_64",
 340         "x86_64-unknown-netbsd" => "BSD-x86_64",
 341         _ => panic!("don't know how to configure OpenSSL for {}", target),
 342     };
 343     configure.arg(os);
 344     configure.env("CC", build.cc(target));
 345     for flag in build.cflags(target) {
 346         configure.arg(flag);
 347     }
 348     // There is no specific os target for android aarch64 or x86_64,
 349     // so we need to pass some extra cflags
 350     if target == "aarch64-linux-android" || target == "x86_64-linux-android" {
 351         configure.arg("-mandroid");
 352         configure.arg("-fomit-frame-pointer");
 353     }
 354     // Make PIE binaries
 355     // Non-PIE linker support was removed in Lollipop
 356     // https://source.android.com/security/enhancements/enhancements50
 357     if target == "i686-linux-android" {
 358         configure.arg("no-asm");
 359     }
 360     configure.current_dir(&obj);
 361     println!("Configuring openssl for {}", target);
 362     build.run_quiet(&mut configure);
 363     println!("Building openssl for {}", target);
 364     build.run_quiet(Command::new("make").arg("-j1").current_dir(&obj));
 365     println!("Installing openssl for {}", target);
 366     build.run_quiet(Command::new("make").arg("install").current_dir(&obj));
 367
 368     let mut f = t!(File::create(&stamp));
 369     t!(f.write_all(OPENSSL_VERS.as_bytes()));
 370 }