--- a/hw/kdrive/src/kdrive.c	2017-03-15 11:05:25.000000000 -0700
+++ a/hw/kdrive/src/kdrive.c	2017-09-19 14:15:20.800426840 -0700
@@ -95,6 +95,12 @@
 
 static Bool kdCaughtSignal = FALSE;
 
+#if ((defined(__sparc__) || defined(__sparc)) && defined (sun))
+int  num_total_disp_dev = 0;
+int  num_session_disp_dev = 0;
+char disp_dev_path[PATH_MAX];
+#endif
+
 /*
  * Carry arguments from InitOutput through driver initialization
  * to KdScreenInit