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42 lines
1.4 KiB
42 lines
1.4 KiB
fn main() {
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println!("cargo:rerun-if-changed=build.rs");
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#[cfg(feature = "runtime")]
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build_c_helpers();
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}
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#[cfg(feature = "runtime")]
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fn build_c_helpers() {
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use wasmtime_versioned_export_macros::versioned_suffix;
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// NB: duplicating a workaround in the wasmtime-fiber build script.
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println!("cargo:rustc-check-cfg=cfg(asan)");
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match std::env::var("CARGO_CFG_SANITIZE") {
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Ok(s) if s == "address" => {
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println!("cargo:rustc-cfg=asan");
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}
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_ => {}
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}
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// If this platform is neither unix nor windows then there's no default need
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// for a C helper library since `helpers.c` is tailored for just these
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// platforms currently.
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if std::env::var("CARGO_CFG_UNIX").is_err() && std::env::var("CARGO_CFG_WINDOWS").is_err() {
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return;
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}
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let mut build = cc::Build::new();
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build.warnings(true);
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let arch = std::env::var("CARGO_CFG_TARGET_ARCH").unwrap();
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let os = std::env::var("CARGO_CFG_TARGET_OS").unwrap();
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build.define(&format!("CFG_TARGET_OS_{}", os), None);
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build.define(&format!("CFG_TARGET_ARCH_{}", arch), None);
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build.define("VERSIONED_SUFFIX", Some(versioned_suffix!()));
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println!("cargo:rerun-if-changed=src/runtime/vm/helpers.c");
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build.file("src/runtime/vm/helpers.c");
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build.compile("wasmtime-helpers");
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if os == "linux" {
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println!("cargo:rustc-link-lib=m");
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}
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}
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