fix(build): set Swift target triple

This fixes some issues when building a Swift package for iOS

This fix was written by @guillemcordoba

Co-authored-by: guillemcordoba

Author: lucasfernog

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "swift-rs"
-version = "1.0.6"
+version = "1.0.7"
 description = "Call Swift from Rust with ease!"
 authors = ["The swift-rs contributors"]
 license = "MIT OR Apache-2.0"

example/Cargo.lock

@@ -253,9 +253,12 @@ impl SwiftLinker {
                 arch => arch,
             };
 
+            let swift_target_triple = rust_target
+                .swift_target_triple(&self.macos_min_version, self.ios_min_version.as_deref());
+
             command
                 // Build the package (duh)
-                .args(["build"])
+                .arg("build")
                 // SDK path for regular compilation (idk)
                 .args(["--sdk", sdk_path.trim()])
                 // Release/Debug configuration
@@ -270,24 +273,17 @@ impl SwiftLinker {
                 // Override target triple for each swiftc instance.
                 // Necessary for iOS compilation.
                 .args(["-Xswiftc", "-target"])
-                .args([
-                    "-Xswiftc",
-                    &rust_target.swift_target_triple(
-                        &self.macos_min_version,
-                        self.ios_min_version.as_deref(),
-                    ),
-                ]);
+                .args(["-Xswiftc", &swift_target_triple])
+                .args(["-Xcc", &format!("--target={swift_target_triple}")])
+                .args(["-Xcxx", &format!("--target={swift_target_triple}")]);
 
             if !command.status().unwrap().success() {
                 panic!("Failed to compile swift package {}", package.name);
             }
 
             let search_path = out_path
                 // swift build uses this output folder no matter what is the target
-                .join(format!(
-                    "{}-apple-macosx",
-                    arch
-                ))
+                .join(format!("{}-apple-macosx", arch))
                 .join(configuration);
 
             println!("cargo:rerun-if-changed={}", package_path.display());

src-rs/build.rs

@@ -26,7 +26,6 @@ type Data = SRArray<u8>;
 pub struct SRData(SRObject<Data>);
 
 impl SRData {
-    ///
     pub fn as_slice(&self) -> &[u8] {
         self
     }