Unified: Ensure extractor can find the Swift .so when built with cargo

Author: jketema

unified/extractor/build.rs

@@ -0,0 +1,10 @@
+fn main() {
+    if let Ok(dir) = std::env::var("DEP_SWIFTSYNTAXFFI_LIBDIR") {
+        println!("cargo:rustc-link-search=native={dir}");
+        println!("cargo:rustc-link-lib=dylib=SwiftSyntaxFFI");
+        println!("cargo:rustc-link-arg=-Wl,-rpath,{dir}");
+    }
+    if let Ok(dir) = std::env::var("DEP_SWIFTSYNTAXFFI_RUNTIMEDIR") {
+        println!("cargo:rustc-link-arg=-Wl,-rpath,{dir}");
+    }
+}

unified/swift-syntax-rs/Cargo.toml

@@ -4,6 +4,7 @@ description = "Rust wrapper around the swift-syntax package for parsing Swift so
 version = "0.1.0"
 authors = ["GitHub"]
 edition = "2024"
+links = "SwiftSyntaxFFI"
 
 [lib]
 name = "swift_syntax_rs"

unified/swift-syntax-rs/build.rs

@@ -56,11 +56,13 @@ fn main() {
     println!("cargo:rustc-link-search=native={}", build_dir.display());
     println!("cargo:rustc-link-lib=dylib=SwiftSyntaxFFI");
     println!("cargo:rustc-link-arg=-Wl,-rpath,{}", build_dir.display());
+    println!("cargo:libdir={}", build_dir.display());
 
     // The executable also needs to find the Swift runtime libraries at run time.
     if let Some(runtime) = swift_runtime_dir() {
         println!("cargo:rustc-link-search=native={}", runtime.display());
         println!("cargo:rustc-link-arg=-Wl,-rpath,{}", runtime.display());
+        println!("cargo:runtimedir={}", runtime.display());
     }
 }