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 extern crate gcc;
  14 extern crate build_helper;
  15
  16 use std::{env, fs};
  17 use std::path::PathBuf;
  18 use std::process::Command;
  19 use build_helper::{run, rerun_if_changed_anything_in_dir};
  20
  21 fn main() {
  22     println!("cargo:rustc-cfg=cargobuild");
  23     println!("cargo:rerun-if-changed=build.rs");
  24
  25     let target = env::var("TARGET").expect("TARGET was not set");
  26     let host = env::var("HOST").expect("HOST was not set");
  27     if cfg!(feature = "backtrace") && !target.contains("apple") && !target.contains("msvc") &&
  28         !target.contains("emscripten") && !target.contains("fuchsia") && !target.contains("redox") {
  29         build_libbacktrace(&host, &target);
  30     }
  31
  32     if target.contains("linux") {
  33         if target.contains("android") {
  34             println!("cargo:rustc-link-lib=dl");
  35             println!("cargo:rustc-link-lib=log");
  36             println!("cargo:rustc-link-lib=gcc");
  37         } else if !target.contains("musl") || target.contains("mips") {
  38             println!("cargo:rustc-link-lib=dl");
  39             println!("cargo:rustc-link-lib=rt");
  40             println!("cargo:rustc-link-lib=pthread");
  41         }
  42     } else if target.contains("freebsd") {
  43         println!("cargo:rustc-link-lib=execinfo");
  44         println!("cargo:rustc-link-lib=pthread");
  45     } else if target.contains("dragonfly") || target.contains("bitrig") ||
  46               target.contains("netbsd") || target.contains("openbsd") {
  47         println!("cargo:rustc-link-lib=pthread");
  48     } else if target.contains("apple-darwin") {
  49         println!("cargo:rustc-link-lib=System");
  50     } else if target.contains("apple-ios") {
  51         println!("cargo:rustc-link-lib=System");
  52         println!("cargo:rustc-link-lib=objc");
  53         println!("cargo:rustc-link-lib=framework=Security");
  54         println!("cargo:rustc-link-lib=framework=Foundation");
  55     } else if target.contains("windows") {
  56         println!("cargo:rustc-link-lib=advapi32");
  57         println!("cargo:rustc-link-lib=ws2_32");
  58         println!("cargo:rustc-link-lib=userenv");
  59         println!("cargo:rustc-link-lib=shell32");
  60     } else if target.contains("fuchsia") {
  61         println!("cargo:rustc-link-lib=magenta");
  62         println!("cargo:rustc-link-lib=mxio");
  63         println!("cargo:rustc-link-lib=launchpad"); // for std::process
  64     }
  65 }
  66
  67 fn build_libbacktrace(host: &str, target: &str) {
  68     let build_dir = env::var_os("RUSTBUILD_NATIVE_DIR").unwrap_or(env::var_os("OUT_DIR").unwrap());
  69     let build_dir = PathBuf::from(build_dir).join("libbacktrace");
  70     let _ = fs::create_dir_all(&build_dir);
  71
  72     println!("cargo:rustc-link-lib=static=backtrace");
  73     println!("cargo:rustc-link-search=native={}/.libs", build_dir.display());
  74     if !cfg!(stage0) {
  75         return
  76     }
  77
  78     let src_dir = env::current_dir().unwrap().join("../libbacktrace");
  79     rerun_if_changed_anything_in_dir(&src_dir);
  80     let compiler = gcc::Config::new().get_compiler();
  81     // only msvc returns None for ar so unwrap is okay
  82     let ar = build_helper::cc2ar(compiler.path(), target).unwrap();
  83     let mut cflags = compiler.args().iter().map(|s| s.to_str().unwrap())
  84                              .collect::<Vec<_>>().join(" ");
  85     cflags.push_str(" -fvisibility=hidden");
  86     run(Command::new("sh")
  87                 .current_dir(&build_dir)
  88                 .arg(src_dir.join("configure").to_str().unwrap()
  89                             .replace("C:\\", "/c/")
  90                             .replace("\\", "/"))
  91                 .arg("--with-pic")
  92                 .arg("--disable-multilib")
  93                 .arg("--disable-shared")
  94                 .arg("--disable-host-shared")
  95                 .arg(format!("--host={}", build_helper::gnu_target(target)))
  96                 .arg(format!("--build={}", build_helper::gnu_target(host)))
  97                 .env("CC", compiler.path())
  98                 .env("AR", &ar)
  99                 .env("RANLIB", format!("{} s", ar.display()))
 100                 .env("CFLAGS", cflags));
 101
 102     run(Command::new(build_helper::make(host))
 103                 .current_dir(&build_dir)
 104                 .arg(format!("INCDIR={}", src_dir.display()))
 105                 .arg("-j").arg(env::var("NUM_JOBS").expect("NUM_JOBS was not set")));
 106 }