src/librustc_target/spec/wasm32_unknown_emscripten.rs

   1 use super::wasm32_base;
   2 use super::{LinkArgs, LinkerFlavor, PanicStrategy, Target, TargetOptions};
   3
   4 pub fn target() -> Result<Target, String> {
   5     let mut post_link_args = LinkArgs::new();
   6     post_link_args.insert(
   7         LinkerFlavor::Em,
   8         vec![
   9             "-s".to_string(),
  10             "ERROR_ON_UNDEFINED_SYMBOLS=1".to_string(),
  11             "-s".to_string(),
  12             "ASSERTIONS=1".to_string(),
  13             "-s".to_string(),
  14             "ABORTING_MALLOC=0".to_string(),
  15             "-Wl,--fatal-warnings".to_string(),
  16         ],
  17     );
  18
  19     let opts = TargetOptions {
  20         // emcc emits two files - a .js file to instantiate the wasm and supply platform
  21         // functionality, and a .wasm file.
  22         exe_suffix: ".js".to_string(),
  23         linker: None,
  24         linker_is_gnu: true,
  25         is_like_emscripten: true,
  26         panic_strategy: PanicStrategy::Unwind,
  27         post_link_args,
  28         target_family: Some("unix".to_string()),
  29         ..wasm32_base::options()
  30     };
  31     Ok(Target {
  32         llvm_target: "wasm32-unknown-emscripten".to_string(),
  33         target_endian: "little".to_string(),
  34         target_pointer_width: "32".to_string(),
  35         target_c_int_width: "32".to_string(),
  36         target_os: "emscripten".to_string(),
  37         target_env: String::new(),
  38         target_vendor: "unknown".to_string(),
  39         data_layout: "e-m:e-p:32:32-i64:64-n32:64-S128".to_string(),
  40         arch: "wasm32".to_string(),
  41         linker_flavor: LinkerFlavor::Em,
  42         options: opts,
  43     })
  44 }