void Init()
{
var loader = new DynamicLoader(importer, ctx);
RootContext.ToplevelTypes = module;
//var startup_files = new List<string> ();
//foreach (CompilationUnit file in Location.SourceFiles)
// startup_files.Add (file.Path);
loader.LoadReferences(module);
ctx.BuiltinTypes.CheckDefinitions(module);
module.InitializePredefinedTypes();
inited = true;
}