1 use super::{LinkArgs, LinkerFlavor, Target, TargetOptions};
3 pub fn target() -> Result<Target, String> {
4 // FIXME(nikic) BINARYEN_TRAP_MODE=clamp is needed to avoid trapping in our
5 // -Zsaturating-float-casts implementation. This can be dropped if/when
6 // we have native fpto[su]i.sat intrinsics, or the implementation otherwise
7 // stops relying on non-trapping fpto[su]i.
8 let mut post_link_args = LinkArgs::new();
9 post_link_args.insert(LinkerFlavor::Em,
10 vec!["-s".to_string(),
11 "BINARYEN=1".to_string(),
13 "ERROR_ON_UNDEFINED_SYMBOLS=1".to_string(),
15 "BINARYEN_TRAP_MODE='clamp'".to_string()]);
17 let opts = TargetOptions {
18 dynamic_linking: false,
20 // Today emcc emits two files - a .js file to bootstrap and
21 // possibly interpret the wasm, and a .wasm file
22 exe_suffix: ".js".to_string(),
26 is_like_emscripten: true,
27 max_atomic_width: Some(32),
29 target_family: Some("unix".to_string()),
30 codegen_backend: "emscripten".to_string(),
34 llvm_target: "asmjs-unknown-emscripten".to_string(),
35 target_endian: "little".to_string(),
36 target_pointer_width: "32".to_string(),
37 target_c_int_width: "32".to_string(),
38 target_os: "emscripten".to_string(),
39 target_env: String::new(),
40 target_vendor: "unknown".to_string(),
41 data_layout: "e-p:32:32-i64:64-v128:32:128-n32-S128".to_string(),
42 arch: "wasm32".to_string(),
43 linker_flavor: LinkerFlavor::Em,