library/unwind/build.rs

   1 use std::env;
   2
   3 fn main() {
   4     println!("cargo:rerun-if-changed=build.rs");
   5     let target = env::var("TARGET").expect("TARGET was not set");
   6
   7     if target.contains("android") {
   8         let build = cc::Build::new();
   9
  10         // Since ndk r23 beta 3 `libgcc` was replaced with `libunwind` thus
  11         // check if we have `libunwind` available and if so use it. Otherwise
  12         // fall back to `libgcc` to support older ndk versions.
  13         let has_unwind = build.is_flag_supported("-lunwind").expect("Unable to invoke compiler");
  14
  15         if has_unwind {
  16             println!("cargo:rustc-cfg=feature=\"system-llvm-libunwind\"");
  17         }
  18     } else if target.contains("freebsd") {
  19         println!("cargo:rustc-link-lib=gcc_s");
  20     } else if target.contains("netbsd") {
  21         println!("cargo:rustc-link-lib=gcc_s");
  22     } else if target.contains("openbsd") {
  23         if target.contains("sparc64") {
  24             println!("cargo:rustc-link-lib=gcc");
  25         } else {
  26             println!("cargo:rustc-link-lib=c++abi");
  27         }
  28     } else if target.contains("solaris") {
  29         println!("cargo:rustc-link-lib=gcc_s");
  30     } else if target.contains("illumos") {
  31         println!("cargo:rustc-link-lib=gcc_s");
  32     } else if target.contains("dragonfly") {
  33         println!("cargo:rustc-link-lib=gcc_pic");
  34     } else if target.ends_with("pc-windows-gnu") {
  35         // This is handled in the target spec with late_link_args_[static|dynamic]
  36     } else if target.contains("uwp-windows-gnu") {
  37         println!("cargo:rustc-link-lib=unwind");
  38     } else if target.contains("haiku") {
  39         println!("cargo:rustc-link-lib=gcc_s");
  40     } else if target.contains("redox") {
  41         // redox is handled in lib.rs
  42     }
  43 }