Add gtk and x11 headers to linux specific platform header

src/xenia/base/platform_linux.h

@@ -0,0 +1,30 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2015 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#ifndef XENIA_BASE_PLATFORM_X11_H_
+#define XENIA_BASE_PLATFORM_X11_H_
+
+// NOTE: if you're including this file it means you are explicitly depending
+// on Linux headers. Including this file outside of linux platform specific
+// source code will break portability
+
+#include "xenia/base/platform.h"
+
+// Xlib is used only for GLX interaction, the window management and input
+// events are done with gtk/gdk
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/Xos.h>
+
+//Used for window management. Gtk is for GUI and wigets, gdk is for lower
+//level events like key presses, mouse events, etc
+#include <gtk/gtk.h>
+#include <gdk/gdk.h>
+
+#endif  // XENIA_BASE_PLATFORM_X11_H_