...

compiler/NubLang.CLI/Program.cs

@@ -21,7 +21,7 @@ foreach (var file in args)
 }
 
 var modules = Module.Collect(syntaxTrees);
-var compilationUnits = new List<CompilationUnit?>();
+var compilationUnits = new List<List<TopLevelNode>>();
 
 for (var i = 0; i < args.Length; i++)
 {
@@ -46,16 +46,48 @@ var cPaths = new List<string>();
 
 Directory.CreateDirectory(".build");
 
+var typedModules = modules.Select(x => (x.Key, TypedModule.FromModule(x.Key, x.Value, modules))).ToDictionary();
+
+var moduleHeaders = new List<string>();
+
+var commonHeaderOut = Path.Combine(".build", "runtime.h");
+
+File.WriteAllText(commonHeaderOut, """
+                                   #include <stddef.h>
+
+                                   void *rc_alloc(size_t size, void (*destructor)(void *self));
+                                   void rc_retain(void *obj);
+                                   void rc_release(void *obj);
+
+                                   typedef struct
+                                   {
+                                       unsigned long long length;
+                                       char *data;
+                                   } nub_string;
+
+                                   typedef struct
+                                   {
+                                       unsigned long long length;
+                                       void *data;
+                                   } nub_slice;
+                                   """);
+
+moduleHeaders.Add(commonHeaderOut);
+
+foreach (var typedModule in typedModules)
+{
+    var header = HeaderGenerator.Generate(typedModule.Key, typedModule.Value);
+    var headerOut = Path.Combine(".build", "modules", typedModule.Key + ".h");
+    Directory.CreateDirectory(Path.Combine(".build", "modules"));
+    File.WriteAllText(headerOut, header);
+    moduleHeaders.Add(headerOut);
+}
+
 for (var i = 0; i < args.Length; i++)
 {
     var file = args[i];
     var compilationUnit = compilationUnits[i];
 
-    if (compilationUnit == null)
-    {
-        continue;
-    }
-
     var generator = new Generator(compilationUnit);
     var directory = Path.GetDirectoryName(file);
     if (!string.IsNullOrWhiteSpace(directory))
@@ -74,6 +106,7 @@ foreach (var cPath in cPaths)
 {
     var objectPath = Path.ChangeExtension(cPath, "o");
     using var compileProcess = Process.Start("clang", [
+        ..moduleHeaders.SelectMany(x => new[] { "-include", x }),
         "-ffreestanding", "-std=c23",
         "-g", "-c",
         "-o", objectPath,