src/librustc_target/spec/wasm32_unknown_emscripten.rs

   1 use super::wasm32_base;
   2 use super::{LinkArgs, LinkerFlavor, Target, TargetOptions, PanicStrategy};
   3
   4 pub fn target() -> Result<Target, String> {
   5     let mut post_link_args = LinkArgs::new();
   6     post_link_args.insert(LinkerFlavor::Em,
   7                           vec!["-s".to_string(),
   8                                "ERROR_ON_UNDEFINED_SYMBOLS=1".to_string(),
   9                                "-s".to_string(),
  10                                "ASSERTIONS=1".to_string(),
  11                                "-s".to_string(),
  12                                "ABORTING_MALLOC=0".to_string(),
  13                                "-Wl,--fatal-warnings".to_string(),
  14                                ]);
  15
  16     let opts = TargetOptions {
  17         // emcc emits two files - a .js file to instantiate the wasm and supply platform
  18         // functionality, and a .wasm file.
  19         exe_suffix: ".js".to_string(),
  20         linker: None,
  21         linker_is_gnu: true,
  22         is_like_emscripten: true,
  23         panic_strategy: PanicStrategy::Unwind,
  24         post_link_args,
  25         target_family: Some("unix".to_string()),
  26         .. wasm32_base::options()
  27     };
  28     Ok(Target {
  29         llvm_target: "wasm32-unknown-emscripten".to_string(),
  30         target_endian: "little".to_string(),
  31         target_pointer_width: "32".to_string(),
  32         target_c_int_width: "32".to_string(),
  33         target_os: "emscripten".to_string(),
  34         target_env: String::new(),
  35         target_vendor: "unknown".to_string(),
  36         data_layout: "e-m:e-p:32:32-i64:64-n32:64-S128".to_string(),
  37         arch: "wasm32".to_string(),
  38         linker_flavor: LinkerFlavor::Em,
  39         options: opts,
  40     })
  41 }