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("netbsd") {
  45         println!("cargo:rustc-link-lib=pthread");
  46         println!("cargo:rustc-link-lib=rt");
  47     } else if target.contains("dragonfly") || target.contains("bitrig") ||
  48               target.contains("openbsd") {
  49         println!("cargo:rustc-link-lib=pthread");
  50     } else if target.contains("solaris") {
  51         println!("cargo:rustc-link-lib=socket");
  52         println!("cargo:rustc-link-lib=posix4");
  53         println!("cargo:rustc-link-lib=pthread");
  54         println!("cargo:rustc-link-lib=resolv");
  55     } else if target.contains("apple-darwin") {
  56         println!("cargo:rustc-link-lib=System");
  57
  58         // res_init and friends require -lresolv on macOS/iOS.
  59         // See #41582 and http://blog.achernya.com/2013/03/os-x-has-silly-libsystem.html
  60         println!("cargo:rustc-link-lib=resolv");
  61     } else if target.contains("apple-ios") {
  62         println!("cargo:rustc-link-lib=System");
  63         println!("cargo:rustc-link-lib=objc");
  64         println!("cargo:rustc-link-lib=framework=Security");
  65         println!("cargo:rustc-link-lib=framework=Foundation");
  66         println!("cargo:rustc-link-lib=resolv");
  67     } else if target.contains("windows") {
  68         println!("cargo:rustc-link-lib=advapi32");
  69         println!("cargo:rustc-link-lib=ws2_32");
  70         println!("cargo:rustc-link-lib=userenv");
  71     } else if target.contains("fuchsia") {
  72         println!("cargo:rustc-link-lib=zircon");
  73         println!("cargo:rustc-link-lib=fdio");
  74     } else if target.contains("cloudabi") {
  75         if cfg!(feature = "backtrace") {
  76             println!("cargo:rustc-link-lib=unwind");
  77         }
  78         println!("cargo:rustc-link-lib=c");
  79         println!("cargo:rustc-link-lib=compiler_rt");
  80     }
  81 }
  82
  83 fn build_libbacktrace(target: &str) -> Result<(), ()> {
  84     let native = native_lib_boilerplate(
  85         "../libbacktrace".as_ref(),
  86         "libbacktrace",
  87         "backtrace",
  88         "",
  89     )?;
  90
  91     let mut build = cc::Build::new();
  92     build
  93         .flag("-fvisibility=hidden")
  94         .include("../libbacktrace")
  95         .include(&native.out_dir)
  96         .out_dir(&native.out_dir)
  97         .warnings(false)
  98         .file("../libbacktrace/alloc.c")
  99         .file("../libbacktrace/backtrace.c")
 100         .file("../libbacktrace/dwarf.c")
 101         .file("../libbacktrace/fileline.c")
 102         .file("../libbacktrace/posix.c")
 103         .file("../libbacktrace/read.c")
 104         .file("../libbacktrace/sort.c")
 105         .file("../libbacktrace/state.c");
 106
 107     let any_debug = env::var("RUSTC_DEBUGINFO").unwrap_or_default() == "true" ||
 108         env::var("RUSTC_DEBUGINFO_LINES").unwrap_or_default() == "true";
 109     build.debug(any_debug);
 110
 111     if target.contains("darwin") {
 112         build.file("../libbacktrace/macho.c");
 113     } else if target.contains("windows") {
 114         build.file("../libbacktrace/pecoff.c");
 115     } else {
 116         build.file("../libbacktrace/elf.c");
 117
 118         let pointer_width = env::var("CARGO_CFG_TARGET_POINTER_WIDTH").unwrap();
 119         if pointer_width == "64" {
 120             build.define("BACKTRACE_ELF_SIZE", "64");
 121         } else {
 122             build.define("BACKTRACE_ELF_SIZE", "32");
 123         }
 124     }
 125
 126     File::create(native.out_dir.join("backtrace-supported.h")).unwrap();
 127     build.define("BACKTRACE_SUPPORTED", "1");
 128     build.define("BACKTRACE_USES_MALLOC", "1");
 129     build.define("BACKTRACE_SUPPORTS_THREADS", "0");
 130     build.define("BACKTRACE_SUPPORTS_DATA", "0");
 131
 132     File::create(native.out_dir.join("config.h")).unwrap();
 133     if !target.contains("apple-ios") &&
 134        !target.contains("solaris") &&
 135        !target.contains("redox") &&
 136        !target.contains("android") &&
 137        !target.contains("haiku") {
 138         build.define("HAVE_DL_ITERATE_PHDR", "1");
 139     }
 140     build.define("_GNU_SOURCE", "1");
 141     build.define("_LARGE_FILES", "1");
 142
 143     build.compile("backtrace");
 144     Ok(())
 145 }