feat: Add support for *.a files linking

Readme.md

@@ -270,12 +270,12 @@ Support for [Emscripten's dynamic linking](https://github.com/emscripten-core/em
 Instead, use Static Linking below.
 
 #### Static Linking
-Statically linking Emscripten LLVM Bitcode (`.bc` files) files to mono is supported on both Windows 10 and Linux. To build on Windows please refer to the AOT environment setup instructions.
+Statically linking Emscripten LLVM Bitcode (`.bc` and `.a` files) files to mono is supported on both Windows 10 and Linux. To build on Windows please refer to the AOT environment setup instructions.
 
-This linking type embeds the `.bc` files with the rest of the WebAssembly modules, and uses _normal_
+This linking type embeds the `.bc` or `.a` files with the rest of the WebAssembly modules, and uses _normal_
 webassembly function invocations that are faster than with dynamic linking.
 
-Any `.bc` file placed as content in the built project will be statically linked to 
+Any `.bc` or `.a` file placed as content in the built project will be statically linked to 
 the currently running application, allowing for p/invoke to be functional when resolving methods
 from the loaded module.
 
@@ -503,7 +503,7 @@ The integration with WSL provides a way for using AOT, Mixed mode or external bi
 
 This feature is active only if one of those condition is true:
 - The `WasmShellMonoRuntimeExecutionMode` property is `FullAOT` or `InterpreterAndAOT
-- There is a `*.bc` file in the `Content` item group
+- There is a `*.bc` or `*.a` file in the `Content` item group
 - The `WasmShellForceUseWSL` is set to `true`
 
 Otherwise, the WSL integration is not used and the mono runtime present in the SDK is used as-is.

src/Uno.Wasm.Bootstrap/ShellTask.cs

@@ -265,6 +265,7 @@ private void CleanupDist()
 			var unusedFiles = new[] {
 				"*.wast",
 				"*.bc",
+				"*.a",
 			};
 
 			foreach (var unusedFile in unusedFiles)
@@ -774,7 +775,12 @@ private IEnumerable<string> GetDynamicLibrariesParams() =>
 
 		private IEnumerable<string> GetBitcodeFilesParams()
 		{
-			_bitcodeFilesCache = _bitcodeFilesCache ?? Directory.EnumerateFiles(_distPath, "*.bc", SearchOption.TopDirectoryOnly).ToArray();
+			var bitcodeFiles = new[] { "*.bc", "*.a" };
+
+			_bitcodeFilesCache = _bitcodeFilesCache ?? bitcodeFiles
+				.SelectMany(b => Directory.EnumerateFiles(_distPath, b, SearchOption.TopDirectoryOnly))
+				.ToArray();
+
 			return _bitcodeFilesCache;
 		}