1 use std::env; 2 use wasmtime_versioned_export_macros::versioned_suffix; 3 main()4fn main() { 5 let mut build = cc::Build::new(); 6 let arch = env::var("CARGO_CFG_TARGET_ARCH").unwrap(); 7 let os = env::var("CARGO_CFG_TARGET_OS").unwrap(); 8 9 // NB: Technically `cfg(sanitize = "address")` is not stable and requires a 10 // `#![feature]` but sort of abuse the fact that cfgs are "leaked" through 11 // into Cargo ungated via `--print cfg`. Translate that to `cfg(asan)` for 12 // us to write down in the code. 13 println!("cargo:rustc-check-cfg=cfg(asan)"); 14 match env::var("CARGO_CFG_SANITIZE") { 15 Ok(s) if s == "address" => { 16 println!("cargo:rustc-cfg=asan"); 17 } 18 _ => {} 19 } 20 21 if os == "windows" { 22 println!("cargo:rerun-if-changed=src/windows.c"); 23 build.file("src/windows.c"); 24 build.define("VERSIONED_SUFFIX", Some(versioned_suffix!())); 25 } else { 26 // assume that this is included via inline assembly in the crate itself, 27 // and the crate will otherwise have a `compile_error!` for unsupported 28 // platforms. 29 println!("cargo:rerun-if-changed=build.rs"); 30 return; 31 } 32 build.define(&format!("CFG_TARGET_OS_{os}"), None); 33 build.define(&format!("CFG_TARGET_ARCH_{arch}"), None); 34 build.compile("wasmtime-fiber"); 35 } 36