src/libstd/build.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 #![deny(warnings)]
  12
  13 #[macro_use]
  14 extern crate build_helper;
  15 extern crate gcc;
  16
  17 use std::env;
  18 use std::fs::{self, File};
  19 use std::path::{Path, PathBuf};
  20 use std::process::Command;
  21 use build_helper::{run, rerun_if_changed_anything_in_dir, up_to_date};
  22
  23 fn main() {
  24     println!("cargo:rerun-if-changed=build.rs");
  25
  26     let target = env::var("TARGET").expect("TARGET was not set");
  27     let host = env::var("HOST").expect("HOST was not set");
  28     if cfg!(feature = "backtrace") && !target.contains("apple") && !target.contains("msvc") &&
  29         !target.contains("emscripten") && !target.contains("fuchsia") && !target.contains("redox") {
  30         build_libbacktrace(&host, &target);
  31     }
  32
  33     if target.contains("linux") {
  34         if target.contains("android") {
  35             println!("cargo:rustc-link-lib=dl");
  36             println!("cargo:rustc-link-lib=log");
  37             println!("cargo:rustc-link-lib=gcc");
  38         } else if !target.contains("musl") || target.contains("mips") {
  39             println!("cargo:rustc-link-lib=dl");
  40             println!("cargo:rustc-link-lib=rt");
  41             println!("cargo:rustc-link-lib=pthread");
  42         }
  43     } else if target.contains("freebsd") {
  44         println!("cargo:rustc-link-lib=execinfo");
  45         println!("cargo:rustc-link-lib=pthread");
  46     } else if target.contains("dragonfly") || target.contains("bitrig") ||
  47               target.contains("netbsd") || target.contains("openbsd") {
  48         println!("cargo:rustc-link-lib=pthread");
  49     } else if target.contains("apple-darwin") {
  50         println!("cargo:rustc-link-lib=System");
  51     } else if target.contains("apple-ios") {
  52         println!("cargo:rustc-link-lib=System");
  53         println!("cargo:rustc-link-lib=objc");
  54         println!("cargo:rustc-link-lib=framework=Security");
  55         println!("cargo:rustc-link-lib=framework=Foundation");
  56     } else if target.contains("windows") {
  57         println!("cargo:rustc-link-lib=advapi32");
  58         println!("cargo:rustc-link-lib=ws2_32");
  59         println!("cargo:rustc-link-lib=userenv");
  60         println!("cargo:rustc-link-lib=shell32");
  61     } else if target.contains("fuchsia") {
  62         println!("cargo:rustc-link-lib=magenta");
  63         println!("cargo:rustc-link-lib=mxio");
  64         println!("cargo:rustc-link-lib=launchpad"); // for std::process
  65     }
  66 }
  67
  68 fn build_libbacktrace(host: &str, target: &str) {
  69     let build_dir = env::var_os("RUSTBUILD_NATIVE_DIR").unwrap_or(env::var_os("OUT_DIR").unwrap());
  70     let build_dir = PathBuf::from(build_dir).join("libbacktrace");
  71     let _ = fs::create_dir_all(&build_dir);
  72
  73     println!("cargo:rustc-link-lib=static=backtrace");
  74     println!("cargo:rustc-link-search=native={}/.libs", build_dir.display());
  75     let src_dir = env::current_dir().unwrap().join("../libbacktrace");
  76     rerun_if_changed_anything_in_dir(&src_dir);
  77     let timestamp = build_dir.join("rustbuild.timestamp");
  78     if up_to_date(&Path::new("build.rs"), &timestamp) && up_to_date(&src_dir, &timestamp) {
  79         return
  80     }
  81
  82     let compiler = gcc::Config::new().get_compiler();
  83     // only msvc returns None for ar so unwrap is okay
  84     let ar = build_helper::cc2ar(compiler.path(), target).unwrap();
  85     let mut cflags = compiler.args().iter().map(|s| s.to_str().unwrap())
  86                              .collect::<Vec<_>>().join(" ");
  87     cflags.push_str(" -fvisibility=hidden");
  88     run(Command::new("sh")
  89                 .current_dir(&build_dir)
  90                 .arg(src_dir.join("configure").to_str().unwrap()
  91                             .replace("C:\\", "/c/")
  92                             .replace("\\", "/"))
  93                 .arg("--with-pic")
  94                 .arg("--disable-multilib")
  95                 .arg("--disable-shared")
  96                 .arg("--disable-host-shared")
  97                 .arg(format!("--host={}", build_helper::gnu_target(target)))
  98                 .arg(format!("--build={}", build_helper::gnu_target(host)))
  99                 .env("CC", compiler.path())
 100                 .env("AR", &ar)
 101                 .env("RANLIB", format!("{} s", ar.display()))
 102                 .env("CFLAGS", cflags));
 103
 104     run(Command::new(build_helper::make(host))
 105                 .current_dir(&build_dir)
 106                 .arg(format!("INCDIR={}", src_dir.display()))
 107                 .arg("-j").arg(env::var("NUM_JOBS").expect("NUM_JOBS was not set")));
 108
 109     t!(File::create(&timestamp));
 110 }