Fix: engine unable to find dlls on when running on Windows

extensions/llamacpp-extension/src/backend.ts

@@ -136,6 +136,9 @@ export async function downloadBackend(
   // Get proxy configuration from localStorage
   const proxyConfig = getProxyConfig()
 
+  const sysInfo = await window.core.api.getSystemInfo()
+  const platformName = sysInfo.os_type === 'windows' ? 'win' : 'linux'
+
   const downloadItems = [
     {
       url: `https://github.com/menloresearch/llama.cpp/releases/download/${version}/llama-${version}-bin-${backend}.tar.gz`,
@@ -147,13 +150,13 @@ export async function downloadBackend(
   // also download CUDA runtime + cuBLAS + cuBLASLt if needed
   if (backend.includes('cu11.7') && !(await _isCudaInstalled('11.7'))) {
     downloadItems.push({
-      url: `https://github.com/menloresearch/llama.cpp/releases/download/${version}/cudart-llama-bin-linux-cu11.7-x64.tar.gz`,
+      url: `https://github.com/menloresearch/llama.cpp/releases/download/${version}/cudart-llama-bin-${platformName}-cu11.7-x64.tar.gz`,
       save_path: await joinPath([libDir, 'cuda11.tar.gz']),
       proxy: proxyConfig,
     })
   } else if (backend.includes('cu12.0') && !(await _isCudaInstalled('12.0'))) {
     downloadItems.push({
-      url: `https://github.com/menloresearch/llama.cpp/releases/download/${version}/cudart-llama-bin-linux-cu12.0-x64.tar.gz`,
+      url: `https://github.com/menloresearch/llama.cpp/releases/download/${version}/cudart-llama-bin-${platformName}-cu12.0-x64.tar.gz`,
       save_path: await joinPath([libDir, 'cuda12.tar.gz']),
       proxy: proxyConfig,
     })

src-tauri/src/core/utils/extensions/inference_llamacpp_extension/server.rs

@@ -134,11 +134,25 @@ pub async fn load_llama_model(
                 Err(_) => lib_path.to_string(),
             };
             command.env("PATH", new_path);
+
+            // Normalize the path by removing UNC prefix if present
+            let normalized_path = lib_path.trim_start_matches(r"\\?\").to_string();
+            log::info!("Library path:\n{}", &normalized_path);
+
+            // Only set current_dir if the normalized path exists and is a directory
+            let path = std::path::Path::new(&normalized_path);
+            if path.exists() && path.is_dir() {
+                command.current_dir(&normalized_path);
+            } else {
+                log::warn!(
+                    "Library path '{}' does not exist or is not a directory",
+                    normalized_path
+                );
+            }
         } else {
             log::warn!("Library path setting is not supported on this OS");
         }
     }
-
     command.stdout(Stdio::piped());
     command.stderr(Stdio::piped());
     #[cfg(all(windows, target_arch = "x86_64"))]