Updated DLL

Fixed DLL loading issues with Linux

.cargo/config

@@ -0,0 +1,4 @@
+[target.x86_64-unknown-linux-gnu]
+rustflags = [
+  "-C", "link-arg=-Wl,-rpath,$ORIGIN",
+]

Cargo.toml

@@ -12,5 +12,9 @@ lto = true # Enables link to optimizations
 opt-level = "z" # Optimize for binary size
 strip = true # Remove debug symbols
 
+[[bin]]
+name = "harmony_link_client"
+path = "src/main.rs"
+
 [dependencies]
 libloading = "0.8.0"

build.rs

@@ -29,4 +29,7 @@ fn main() {
             fs::copy(&path, &dest_path).expect("copy failed");
         }
     }
+
+    println!("cargo:rustc-env=RUSTFLAGS=-C link-arg=-Wl,-rpath,$ORIGIN");
+    println!("cargo:rerun-if-changed=src/main.rs");
 }

src/main.rs

@@ -1,10 +1,20 @@
 extern crate libloading;
 
 fn main() {
-    let lib = unsafe { match libloading::Library::new("harmony_link_core.dll") {
+    // Use `cfg!` macro to detect OS
+    let lib_path = if cfg!(target_os = "windows") {
+        "harmony_link_core.dll"
+    } else if cfg!(target_os = "linux") {
+        "libharmony_link_core.so"
+    } else {
+        eprintln!("Unsupported OS");
+        return;
+    };
+
+    let lib = unsafe { match libloading::Library::new(lib_path) {
         Ok(lib) => lib,
         Err(err) => {
-            eprintln!("Error loading DLL: {}", err);
+            eprintln!("Error loading dynamic library: {}", err);
             return;
         },
     }
@@ -14,7 +24,7 @@ fn main() {
         let func: libloading::Symbol<unsafe extern "C" fn()> = match lib.get(b"start") {
             Ok(func) => func,
             Err(err) => {
-                eprintln!("Error finding function in DLL: {}", err);
+                eprintln!("Error finding function in dynamic library: {}", err);
                 return;
             }
         };