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 build_helper;
  14 extern crate cc;
  15
  16 use build_helper::native_lib_boilerplate;
  17 use std::env;
  18 use std::fs::File;
  19
  20 fn main() {
  21     let target = env::var("TARGET").expect("TARGET was not set");
  22     if cfg!(feature = "backtrace") &&
  23         !target.contains("cloudabi") &&
  24         !target.contains("emscripten") &&
  25         !target.contains("msvc") &&
  26         !target.contains("wasm32")
  27     {
  28         let _ = build_libbacktrace(&target);
  29     }
  30
  31     if target.contains("linux") {
  32         if target.contains("android") {
  33             println!("cargo:rustc-link-lib=dl");
  34             println!("cargo:rustc-link-lib=log");
  35             println!("cargo:rustc-link-lib=gcc");
  36         } else if !target.contains("musl") {
  37             println!("cargo:rustc-link-lib=dl");
  38             println!("cargo:rustc-link-lib=rt");
  39             println!("cargo:rustc-link-lib=pthread");
  40         }
  41     } else if target.contains("freebsd") {
  42         println!("cargo:rustc-link-lib=execinfo");
  43         println!("cargo:rustc-link-lib=pthread");
  44     } else if target.contains("dragonfly") || target.contains("bitrig") ||
  45               target.contains("netbsd") || target.contains("openbsd") {
  46         println!("cargo:rustc-link-lib=pthread");
  47     } else if target.contains("solaris") {
  48         println!("cargo:rustc-link-lib=socket");
  49         println!("cargo:rustc-link-lib=posix4");
  50         println!("cargo:rustc-link-lib=pthread");
  51         println!("cargo:rustc-link-lib=resolv");
  52     } else if target.contains("apple-darwin") {
  53         println!("cargo:rustc-link-lib=System");
  54
  55         // res_init and friends require -lresolv on macOS/iOS.
  56         // See #41582 and http://blog.achernya.com/2013/03/os-x-has-silly-libsystem.html
  57         println!("cargo:rustc-link-lib=resolv");
  58     } else if target.contains("apple-ios") {
  59         println!("cargo:rustc-link-lib=System");
  60         println!("cargo:rustc-link-lib=objc");
  61         println!("cargo:rustc-link-lib=framework=Security");
  62         println!("cargo:rustc-link-lib=framework=Foundation");
  63         println!("cargo:rustc-link-lib=resolv");
  64     } else if target.contains("windows") {
  65         println!("cargo:rustc-link-lib=advapi32");
  66         println!("cargo:rustc-link-lib=ws2_32");
  67         println!("cargo:rustc-link-lib=userenv");
  68         println!("cargo:rustc-link-lib=shell32");
  69     } else if target.contains("fuchsia") {
  70         println!("cargo:rustc-link-lib=zircon");
  71         println!("cargo:rustc-link-lib=fdio");
  72     } else if target.contains("cloudabi") {
  73         if cfg!(feature = "backtrace") {
  74             println!("cargo:rustc-link-lib=unwind");
  75         }
  76         println!("cargo:rustc-link-lib=c");
  77         println!("cargo:rustc-link-lib=compiler_rt");
  78     }
  79 }
  80
  81 fn build_libbacktrace(target: &str) -> Result<(), ()> {
  82     let native = native_lib_boilerplate("libbacktrace", "libbacktrace", "backtrace", "")?;
  83
  84     let mut build = cc::Build::new();
  85     build
  86         .flag("-fvisibility=hidden")
  87         .include("../libbacktrace")
  88         .include(&native.out_dir)
  89         .out_dir(&native.out_dir)
  90         .warnings(false)
  91         .file("../libbacktrace/alloc.c")
  92         .file("../libbacktrace/backtrace.c")
  93         .file("../libbacktrace/dwarf.c")
  94         .file("../libbacktrace/fileline.c")
  95         .file("../libbacktrace/posix.c")
  96         .file("../libbacktrace/read.c")
  97         .file("../libbacktrace/sort.c")
  98         .file("../libbacktrace/state.c");
  99
 100     let any_debug = env::var("RUSTC_DEBUGINFO").unwrap_or_default() == "true" ||
 101         env::var("RUSTC_DEBUGINFO_LINES").unwrap_or_default() == "true";
 102     build.debug(any_debug);
 103
 104     if target.contains("darwin") {
 105         build.file("../libbacktrace/macho.c");
 106     } else if target.contains("windows") {
 107         build.file("../libbacktrace/pecoff.c");
 108     } else {
 109         build.file("../libbacktrace/elf.c");
 110
 111         let pointer_width = env::var("CARGO_CFG_TARGET_POINTER_WIDTH").unwrap();
 112         if pointer_width == "64" {
 113             build.define("BACKTRACE_ELF_SIZE", "64");
 114         } else {
 115             build.define("BACKTRACE_ELF_SIZE", "32");
 116         }
 117     }
 118
 119     File::create(native.out_dir.join("backtrace-supported.h")).unwrap();
 120     build.define("BACKTRACE_SUPPORTED", "1");
 121     build.define("BACKTRACE_USES_MALLOC", "1");
 122     build.define("BACKTRACE_SUPPORTS_THREADS", "0");
 123     build.define("BACKTRACE_SUPPORTS_DATA", "0");
 124
 125     File::create(native.out_dir.join("config.h")).unwrap();
 126     if !target.contains("apple-ios") &&
 127        !target.contains("solaris") &&
 128        !target.contains("redox") &&
 129        !target.contains("android") &&
 130        !target.contains("haiku") {
 131         build.define("HAVE_DL_ITERATE_PHDR", "1");
 132     }
 133     build.define("_GNU_SOURCE", "1");
 134     build.define("_LARGE_FILES", "1");
 135
 136     build.compile("backtrace");
 137     Ok(())
 138 }