MacUpdater: Initial implementation

Source/Core/MacUpdater/main.m

@@ -0,0 +1,22 @@
+// Copyright 2019 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include <Cocoa/Cocoa.h>
+
+int main(int argc, const char** argv)
+{
+  if (argc == 1)
+  {
+    NSAlert* alert = [[[NSAlert alloc] init] autorelease];
+
+    [alert setMessageText:@"This updater is not meant to be launched directly."];
+    [alert setAlertStyle:NSAlertStyleWarning];
+    [alert setInformativeText:@"Configure Auto-Update in Dolphin's settings instead."];
+    [alert runModal];
+
+    return 1;
+  }
+
+  return NSApplicationMain(argc, argv);
+}