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::fs::{self, File};
  22 use std::io::{Read, Write};
  23 use std::path::Path;
  24 use std::process::Command;
  25
  26 use build_helper::output;
  27 use cmake;
  28 use gcc;
  29
  30 use Build;
  31 use util;
  32 use build_helper::up_to_date;
  33
  34 /// Compile LLVM for `target`.
  35 pub fn llvm(build: &Build, target: &str) {
  36     // If we're using a custom LLVM bail out here, but we can only use a
  37     // custom LLVM for the build triple.
  38     if let Some(config) = build.config.target_config.get(target) {
  39         if let Some(ref s) = config.llvm_config {
  40             return check_llvm_version(build, s);
  41         }
  42     }
  43
  44     let rebuild_trigger = build.src.join("src/rustllvm/llvm-rebuild-trigger");
  45     let mut rebuild_trigger_contents = String::new();
  46     t!(t!(File::open(&rebuild_trigger)).read_to_string(&mut rebuild_trigger_contents));
  47
  48     let out_dir = build.llvm_out(target);
  49     let done_stamp = out_dir.join("llvm-finished-building");
  50     if done_stamp.exists() {
  51         let mut done_contents = String::new();
  52         t!(t!(File::open(&done_stamp)).read_to_string(&mut done_contents));
  53
  54         // If LLVM was already built previously and contents of the rebuild-trigger file
  55         // didn't change from the previous build, then no action is required.
  56         if done_contents == rebuild_trigger_contents {
  57             return
  58         }
  59     }
  60     if build.config.llvm_clean_rebuild {
  61         drop(fs::remove_dir_all(&out_dir));
  62     }
  63
  64     println!("Building LLVM for {}", target);
  65     let _time = util::timeit();
  66     t!(fs::create_dir_all(&out_dir));
  67
  68     // http://llvm.org/docs/CMake.html
  69     let mut cfg = cmake::Config::new(build.src.join("src/llvm"));
  70     if build.config.ninja {
  71         cfg.generator("Ninja");
  72     }
  73
  74     let profile = match (build.config.llvm_optimize, build.config.llvm_release_debuginfo) {
  75         (false, _) => "Debug",
  76         (true, false) => "Release",
  77         (true, true) => "RelWithDebInfo",
  78     };
  79
  80     // NOTE: remember to also update `config.toml.example` when changing the defaults!
  81     let llvm_targets = match build.config.llvm_targets {
  82         Some(ref s) => s,
  83         None => "X86;ARM;AArch64;Mips;PowerPC;SystemZ;JSBackend;MSP430;Sparc;NVPTX",
  84     };
  85
  86     let assertions = if build.config.llvm_assertions {"ON"} else {"OFF"};
  87
  88     cfg.target(target)
  89        .host(&build.config.build)
  90        .out_dir(&out_dir)
  91        .profile(profile)
  92        .define("LLVM_ENABLE_ASSERTIONS", assertions)
  93        .define("LLVM_TARGETS_TO_BUILD", llvm_targets)
  94        .define("LLVM_INCLUDE_EXAMPLES", "OFF")
  95        .define("LLVM_INCLUDE_TESTS", "OFF")
  96        .define("LLVM_INCLUDE_DOCS", "OFF")
  97        .define("LLVM_ENABLE_ZLIB", "OFF")
  98        .define("WITH_POLLY", "OFF")
  99        .define("LLVM_ENABLE_TERMINFO", "OFF")
 100        .define("LLVM_ENABLE_LIBEDIT", "OFF")
 101        .define("LLVM_PARALLEL_COMPILE_JOBS", build.jobs().to_string())
 102        .define("LLVM_TARGET_ARCH", target.split('-').next().unwrap())
 103        .define("LLVM_DEFAULT_TARGET_TRIPLE", target);
 104
 105     if target.contains("msvc") {
 106         cfg.define("LLVM_USE_CRT_DEBUG", "MT");
 107         cfg.define("LLVM_USE_CRT_RELEASE", "MT");
 108         cfg.define("LLVM_USE_CRT_RELWITHDEBINFO", "MT");
 109     }
 110
 111     if target.starts_with("i686") {
 112         cfg.define("LLVM_BUILD_32_BITS", "ON");
 113     }
 114
 115     if let Some(num_linkers) = build.config.llvm_link_jobs {
 116         if num_linkers > 0 {
 117             cfg.define("LLVM_PARALLEL_LINK_JOBS", num_linkers.to_string());
 118         }
 119     }
 120
 121     // http://llvm.org/docs/HowToCrossCompileLLVM.html
 122     if target != build.config.build {
 123         // FIXME: if the llvm root for the build triple is overridden then we
 124         //        should use llvm-tblgen from there, also should verify that it
 125         //        actually exists most of the time in normal installs of LLVM.
 126         let host = build.llvm_out(&build.config.build).join("bin/llvm-tblgen");
 127         cfg.define("CMAKE_CROSSCOMPILING", "True")
 128            .define("LLVM_TABLEGEN", &host);
 129     }
 130
 131     // MSVC handles compiler business itself
 132     if !target.contains("msvc") {
 133         if let Some(ref ccache) = build.config.ccache {
 134            cfg.define("CMAKE_C_COMPILER", ccache)
 135               .define("CMAKE_C_COMPILER_ARG1", build.cc(target))
 136               .define("CMAKE_CXX_COMPILER", ccache)
 137               .define("CMAKE_CXX_COMPILER_ARG1", build.cxx(target));
 138         } else {
 139            cfg.define("CMAKE_C_COMPILER", build.cc(target))
 140               .define("CMAKE_CXX_COMPILER", build.cxx(target));
 141         }
 142         cfg.build_arg("-j").build_arg(build.jobs().to_string());
 143
 144         cfg.define("CMAKE_C_FLAGS", build.cflags(target).join(" "));
 145         cfg.define("CMAKE_CXX_FLAGS", build.cflags(target).join(" "));
 146     }
 147
 148     // FIXME: we don't actually need to build all LLVM tools and all LLVM
 149     //        libraries here, e.g. we just want a few components and a few
 150     //        tools. Figure out how to filter them down and only build the right
 151     //        tools and libs on all platforms.
 152     cfg.build();
 153
 154     t!(t!(File::create(&done_stamp)).write_all(rebuild_trigger_contents.as_bytes()));
 155 }
 156
 157 fn check_llvm_version(build: &Build, llvm_config: &Path) {
 158     if !build.config.llvm_version_check {
 159         return
 160     }
 161
 162     let mut cmd = Command::new(llvm_config);
 163     let version = output(cmd.arg("--version"));
 164     if version.starts_with("3.5") || version.starts_with("3.6") ||
 165        version.starts_with("3.7") {
 166         return
 167     }
 168     panic!("\n\nbad LLVM version: {}, need >=3.5\n\n", version)
 169 }
 170
 171 /// Compiles the `rust_test_helpers.c` library which we used in various
 172 /// `run-pass` test suites for ABI testing.
 173 pub fn test_helpers(build: &Build, target: &str) {
 174     let dst = build.test_helpers_out(target);
 175     let src = build.src.join("src/rt/rust_test_helpers.c");
 176     if up_to_date(&src, &dst.join("librust_test_helpers.a")) {
 177         return
 178     }
 179
 180     println!("Building test helpers");
 181     t!(fs::create_dir_all(&dst));
 182     let mut cfg = gcc::Config::new();
 183
 184     // We may have found various cross-compilers a little differently due to our
 185     // extra configuration, so inform gcc of these compilers. Note, though, that
 186     // on MSVC we still need gcc's detection of env vars (ugh).
 187     if !target.contains("msvc") {
 188         if let Some(ar) = build.ar(target) {
 189             cfg.archiver(ar);
 190         }
 191         cfg.compiler(build.cc(target));
 192     }
 193
 194     cfg.cargo_metadata(false)
 195        .out_dir(&dst)
 196        .target(target)
 197        .host(&build.config.build)
 198        .opt_level(0)
 199        .debug(false)
 200        .file(build.src.join("src/rt/rust_test_helpers.c"))
 201        .compile("librust_test_helpers.a");
 202 }
 203 const OPENSSL_VERS: &'static str = "1.0.2k";
 204 const OPENSSL_SHA256: &'static str =
 205     "6b3977c61f2aedf0f96367dcfb5c6e578cf37e7b8d913b4ecb6643c3cb88d8c0";
 206
 207 pub fn openssl(build: &Build, target: &str) {
 208     let out = match build.openssl_dir(target) {
 209         Some(dir) => dir,
 210         None => return,
 211     };
 212
 213     let stamp = out.join(".stamp");
 214     let mut contents = String::new();
 215     drop(File::open(&stamp).and_then(|mut f| f.read_to_string(&mut contents)));
 216     if contents == OPENSSL_VERS {
 217         return
 218     }
 219     t!(fs::create_dir_all(&out));
 220
 221     let name = format!("openssl-{}.tar.gz", OPENSSL_VERS);
 222     let tarball = out.join(&name);
 223     if !tarball.exists() {
 224         let tmp = tarball.with_extension("tmp");
 225         build.run(Command::new("curl")
 226                         .arg("-o").arg(&tmp)
 227                         .arg(format!("https://www.openssl.org/source/{}", name)));
 228         let mut shasum = if target.contains("apple") {
 229             let mut cmd = Command::new("shasum");
 230             cmd.arg("-a").arg("256");
 231             cmd
 232         } else {
 233             Command::new("sha256sum")
 234         };
 235         let output = output(&mut shasum.arg(&tmp));
 236         let found = output.split_whitespace().next().unwrap();
 237         if found != OPENSSL_SHA256 {
 238             panic!("downloaded openssl sha256 different\n\
 239                     expected: {}\n\
 240                     found:    {}\n", OPENSSL_SHA256, found);
 241         }
 242         t!(fs::rename(&tmp, &tarball));
 243     }
 244     let obj = out.join(format!("openssl-{}", OPENSSL_VERS));
 245     let dst = build.openssl_install_dir(target).unwrap();
 246     drop(fs::remove_dir_all(&obj));
 247     drop(fs::remove_dir_all(&dst));
 248     build.run(Command::new("tar").arg("xf").arg(&tarball).current_dir(&out));
 249
 250     let mut configure = Command::new(obj.join("Configure"));
 251     configure.arg(format!("--prefix={}", dst.display()));
 252     configure.arg("no-dso");
 253     configure.arg("no-ssl2");
 254     configure.arg("no-ssl3");
 255
 256     let os = match target {
 257         "aarch64-unknown-linux-gnu" => "linux-aarch64",
 258         "arm-unknown-linux-gnueabi" => "linux-armv4",
 259         "arm-unknown-linux-gnueabihf" => "linux-armv4",
 260         "armv7-unknown-linux-gnueabihf" => "linux-armv4",
 261         "i686-apple-darwin" => "darwin-i386-cc",
 262         "i686-unknown-freebsd" => "BSD-x86-elf",
 263         "i686-unknown-linux-gnu" => "linux-elf",
 264         "i686-unknown-linux-musl" => "linux-elf",
 265         "mips-unknown-linux-gnu" => "linux-mips32",
 266         "mips64-unknown-linux-gnuabi64" => "linux64-mips64",
 267         "mips64el-unknown-linux-gnuabi64" => "linux64-mips64",
 268         "mipsel-unknown-linux-gnu" => "linux-mips32",
 269         "powerpc-unknown-linux-gnu" => "linux-ppc",
 270         "powerpc64-unknown-linux-gnu" => "linux-ppc64",
 271         "powerpc64le-unknown-linux-gnu" => "linux-ppc64le",
 272         "s390x-unknown-linux-gnu" => "linux64-s390x",
 273         "x86_64-apple-darwin" => "darwin64-x86_64-cc",
 274         "x86_64-unknown-freebsd" => "BSD-x86_64",
 275         "x86_64-unknown-linux-gnu" => "linux-x86_64",
 276         "x86_64-unknown-linux-musl" => "linux-x86_64",
 277         "x86_64-unknown-netbsd" => "BSD-x86_64",
 278         _ => panic!("don't know how to configure OpenSSL for {}", target),
 279     };
 280     configure.arg(os);
 281     configure.env("CC", build.cc(target));
 282     for flag in build.cflags(target) {
 283         configure.arg(flag);
 284     }
 285     configure.current_dir(&obj);
 286     println!("Configuring openssl for {}", target);
 287     build.run_quiet(&mut configure);
 288     println!("Building openssl for {}", target);
 289     build.run_quiet(Command::new("make").current_dir(&obj));
 290     println!("Installing openssl for {}", target);
 291     build.run_quiet(Command::new("make").arg("install").current_dir(&obj));
 292
 293     let mut f = t!(File::create(&stamp));
 294     t!(f.write_all(OPENSSL_VERS.as_bytes()));
 295 }