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build: add wasm support #36

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build: add wasm support #36

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f80aab7
Add wasm support plumbing to libghostty-vt-sys
dfrankland May 8, 2026
1ae482b
Update generated bindings
dfrankland Jun 1, 2026
ab96f1c
Add wasm target checks to flake and CI
dfrankland Jun 1, 2026
4b4d97b
ci: Dont pass static feature flag
Uzaaft Jun 9, 2026
8ebe32f
use Nix apple-sdk in CI only
dfrankland Jun 15, 2026
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3 changes: 3 additions & 0 deletions .github/workflows/ci.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -63,3 +63,6 @@ jobs:
- name: Run flake checks
if: matrix.flake_check
run: nix flake check --print-build-logs

- name: Check wasm32 static link path
run: nix develop -c cargo check -p libghostty-vt --target wasm32-unknown-unknown
8 changes: 7 additions & 1 deletion crates/libghostty-vt-sys/build.rs
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Expand Up @@ -105,6 +105,11 @@ fn build_vendored(link_mode: LinkMode) {
let out_dir = PathBuf::from(env::var("OUT_DIR").expect("OUT_DIR must be set"));
let target = env::var("TARGET").expect("TARGET must be set");
let host = env::var("HOST").expect("HOST must be set");
if target.starts_with("wasm32") && matches!(link_mode, LinkMode::Dynamic) {
panic!(
"wasm32 targets do not support dynamic linking; do not enable the `link-dynamic` feature"
);
}

// Locate ghostty source: env override > fetch into OUT_DIR.
let ghostty_dir = match env::var("GHOSTTY_SOURCE_DIR") {
Expand Down Expand Up @@ -171,7 +176,7 @@ fn build_vendored(link_mode: LinkMode) {
run(build, "zig build");

let lib_dir = install_prefix.join("lib");
let include_dir = install_prefix.join("include");
let include_dir = ghostty_dir.join("include");
let search_dirs = library_search_dirs(&target, &install_prefix);
warn_unused_xcframework(&lib_dir);

Expand Down Expand Up @@ -391,6 +396,7 @@ fn zig_target(target: &str) -> String {
"aarch64-pc-windows-msvc" => "aarch64-windows-msvc",
"aarch64-linux-android" => "aarch64-linux-android",
"x86_64-linux-android" => "x86_64-linux-android",
"wasm32-unknown-unknown" => "wasm32-freestanding",
other => panic!("unsupported Rust target for vendored build: {other}"),
};
value.to_owned()
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