init

build.rs

@@ -0,0 +1,62 @@
+use std::env;
+use std::path::PathBuf;
+
+fn main() {
+    println!("cargo:rerun-if-env-changed=UNICORN_DIR");
+    println!("cargo:rerun-if-env-changed=UNICORN_BUILD_DIR");
+    println!("cargo:rerun-if-env-changed=UNICORN_INCLUDE_DIR");
+
+    let target = env::var("TARGET").unwrap_or_default();
+    if target != "wasm32-unknown-emscripten" {
+        return;
+    }
+
+    let manifest_dir = PathBuf::from(env::var("CARGO_MANIFEST_DIR").unwrap_or_default());
+    let unicorn_dir = env::var("UNICORN_DIR")
+        .map(PathBuf::from)
+        .unwrap_or_else(|_| manifest_dir.join("../unicorn"));
+    let unicorn_build_dir = env::var("UNICORN_BUILD_DIR")
+        .map(PathBuf::from)
+        .unwrap_or_else(|_| unicorn_dir.join("build"));
+    let unicorn_include_dir = env::var("UNICORN_INCLUDE_DIR")
+        .map(PathBuf::from)
+        .unwrap_or_else(|_| unicorn_dir.join("include"));
+
+    let required_libs = [
+        "libunicorn.a",
+        "libunicorn-common.a",
+        "libaarch64-softmmu.a",
+        "libarm-softmmu.a",
+    ];
+    for lib in required_libs {
+        let path = unicorn_build_dir.join(lib);
+        if !path.exists() {
+            panic!(
+                "missing unicorn static library: {}. run `bash test/rebuild-unicorn.sh` first",
+                path.display()
+            );
+        }
+    }
+
+    println!("cargo:rustc-link-arg=--no-entry");
+    println!("cargo:rustc-link-arg=-sSTANDALONE_WASM=1");
+    println!(
+        "cargo:rustc-link-search=native={}",
+        unicorn_build_dir.display()
+    );
+    if !unicorn_include_dir.exists() {
+        println!(
+            "cargo:warning=unicorn include dir not found at {}",
+            unicorn_include_dir.display()
+        );
+    }
+
+    for lib in [
+        "unicorn",
+        "unicorn-common",
+        "aarch64-softmmu",
+        "arm-softmmu",
+    ] {
+        println!("cargo:rustc-link-lib=static={lib}");
+    }
+}