sys crate (#583)

Fix #508.
2026-09-28 05:03:44 -06:00 · 2026-09-26 03:43:48 +00:00
parent 82135e07a7
commit 2f26b40e30
21 changed files with 436 additions and 80 deletions
@@ -0,0 +1,96 @@
+//! A build script.
+
+use core::error::Error;
+use std::{env, path::PathBuf};
+
+const LIB_ATOMIC_OPS_DIR: &str = "vendor/libatomic_ops";
+const LIB_GC_DIR: &str = "vendor/bdwgc";
+
+fn main() -> Result<(), Box<dyn Error>> {
+    build_library()?;
+
+    bindgen::builder()
+        .header(format!("{LIB_GC_DIR}/include/gc.h"))
+        .clang_arg(format!("-I{LIB_GC_DIR}/include"))
+        .clang_arg("-DGC_THREADS")
+        .use_core()
+        .allowlist_item("GC_.*")
+        .default_macro_constant_type(bindgen::MacroTypeVariation::Signed)
+        .generate()?
+        .write_to_file(PathBuf::from(env::var("OUT_DIR")?).join("bindings.rs"))?;
+
+    Ok(())
+}
+
+cfg_select! {
+    feature = "cmake" => {
+        fn build_library() -> Result<(), Box<dyn Error>> {
+            use cmake::Config;
+            use std::path::Path;
+
+            let libatomic_include_path = Path::new(LIB_ATOMIC_OPS_DIR)
+                .join("src")
+                .canonicalize()?
+                .display()
+                .to_string()
+                .replace(r"\\?\", "");
+
+            let dst = Config::new(LIB_GC_DIR)
+                .profile("Release")
+                .define("GC_BUILD_SHARED_LIBS", "FALSE")
+                .cflag(format!("-I{}", libatomic_include_path))
+                .build();
+
+            println!(
+                "cargo:rustc-link-search=native={}",
+                dst.join("lib").display()
+            );
+            println!("cargo:rustc-link-lib=static=gc");
+
+            Ok(())
+        }
+    }
+    feature = "autotools" => {
+        fn build_library() -> Result<(), Box<dyn Error>> {
+            for dir in &[LIB_ATOMIC_OPS_DIR, LIB_GC_DIR] {
+                std::process::Command::new("sh")
+                    .arg("-c")
+                    .arg(format!("cd {dir} && ./autogen.sh"))
+                    .output()?;
+            }
+
+            let dst = autotools::Config::new(LIB_ATOMIC_OPS_DIR)
+                .cflag("-fPIC")
+                .build();
+
+            println!(
+                "cargo:rustc-link-search=native={}",
+                dst.join("lib").display()
+            );
+            println!("cargo:rustc-link-lib=static=atomic_ops");
+
+            let dst = autotools::Config::new(LIB_GC_DIR)
+                .cflag(format!(
+                    // spell-checker: disable-next-line
+                    "-I{} -L/lib/x86_64-linux-gnu -lpthread -fPIC",
+                    dst.join("include").display()
+                ))
+                .build();
+
+            println!(
+                "cargo:rustc-link-search=native={}",
+                dst.join("lib").display()
+            );
+            println!("cargo:rustc-link-lib=static=gc");
+
+            for dir in &[LIB_ATOMIC_OPS_DIR, LIB_GC_DIR] {
+                std::process::Command::new("sh")
+                    .arg("-c")
+                    .arg(format!("cd {dir} && git clean -dfx"))
+                    .output()?;
+            }
+
+            Ok(())
+        }
+    }
+}