...

src/compiler/CLI/CLI.csproj

@@ -14,4 +14,13 @@
       <ProjectReference Include="..\Syntax\Syntax.csproj" />
     </ItemGroup>
 
+    <ItemGroup>
+      <Folder Include="runtime\" />
+    </ItemGroup>
+
+    <ItemGroup>
+      <None Remove="runtime\libruntime_x64.a" />
+      <EmbeddedResource Include="runtime\libruntime_x64.a" />
+    </ItemGroup>
+
 </Project>

src/compiler/CLI/Program.cs

@@ -1,4 +1,5 @@
 using System.Diagnostics;
+using System.Reflection;
 using CLI;
 using Generation.QBE;
 using Syntax;
@@ -26,18 +27,13 @@ Directory.CreateDirectory(BIN_INT_DIR);
 
 var files = new List<string>();
 
-var compileOnly = false;
-string? outPath = null;
+string? runtimePath = null;
 
 foreach (var arg in args)
 {
-    if (arg == "-c")
+    if (arg.StartsWith("-r="))
     {
-        compileOnly = true;
-    }
-    else if (arg.StartsWith("-o="))
-    {
-        outPath = arg.Substring("-o=".Length);
+        runtimePath = arg.Substring("-r=".Length);
     }
     else
     {
@@ -99,10 +95,25 @@ if (diagnostics.Any(diagnostic => diagnostic.Severity == DiagnosticSeverity.Erro
     return 1;
 }
 
-var objectFiles = new List<string>
+var objectFiles = new List<string>();
+
+if (runtimePath == null)
 {
-    "libruntime.a"
-};
+    const string RUNTIME_NAME = "libruntime_x64";
+    await using var stream = Assembly.GetExecutingAssembly().GetManifestResourceStream(RUNTIME_NAME);
+    if (stream == null)
+    {
+        throw new Exception("Runtime stream is null");
+    }
+
+    var tmpDir = Directory.CreateTempSubdirectory("nub");
+    runtimePath = Path.Combine(tmpDir.FullName, RUNTIME_NAME + ".a");
+
+    await using var writer = new FileStream(runtimePath, FileMode.Create, FileAccess.Write);
+    await stream.CopyToAsync(writer);
+}
+
+objectFiles.Add(runtimePath);
 
 foreach (var boundSyntaxTree in boundSyntaxTrees)
 {