+/* Define this if you have the GDK_Pixbuf library installed. Some of the
+ * demos can make use of this if it is available.
+ */
+#undef HAVE_GDK_PIXBUF
+
+/* Define this if you have the Independent JPEG Group's JPEG library
+ * installed. Some of the demos can make use of this if it is available.
+ */
+#undef HAVE_JPEGLIB
+