rustc_target/spec/targets/
wasm32_unknown_emscripten.rs

1use crate::spec::{
2    Arch, LinkArgs, LinkerFlavor, Os, PanicStrategy, RelocModel, Target, TargetMetadata,
3    TargetOptions, base, cvs,
4};
5
6pub(crate) fn target() -> Target {
7    // Reset flags for non-Em flavors back to empty to satisfy sanity checking tests.
8    let pre_link_args = LinkArgs::new();
9    let post_link_args =
10        TargetOptions::link_args(LinkerFlavor::EmCc, &["-sABORTING_MALLOC=0", "-sWASM_BIGINT"]);
11
12    let opts = TargetOptions {
13        os: Os::Emscripten,
14        linker_flavor: LinkerFlavor::EmCc,
15        // emcc emits two files - a .js file to instantiate the wasm and supply platform
16        // functionality, and a .wasm file.
17        exe_suffix: ".js".into(),
18        linker: None,
19        pre_link_args,
20        post_link_args,
21        relocation_model: RelocModel::Pic,
22        crt_static_respected: true,
23        crt_static_default: true,
24        panic_strategy: PanicStrategy::Unwind,
25        no_default_libraries: false,
26        families: cvs!["unix", "wasm"],
27        ..base::wasm::options()
28    };
29    Target {
30        llvm_target: "wasm32-unknown-emscripten".into(),
31        metadata: TargetMetadata {
32            description: Some("WebAssembly via Emscripten".into()),
33            tier: Some(2),
34            host_tools: Some(false),
35            std: Some(true),
36        },
37        pointer_width: 32,
38        data_layout: "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-i128:128-f128:64-n32:64-S128-ni:1:10:20"
39            .into(),
40        arch: Arch::Wasm32,
41        options: opts,
42    }
43}
rustc_target/spec/targets/wasm32_unknown_emscripten.rs

rustc_target/spec/targets/
wasm32_unknown_emscripten.rs
