diff -ruN kBuild-0.1.5.orig/src/ash/output.h kBuild-0.1.5/src/ash/output.h
--- kBuild-0.1.5.orig/src/ash/output.h	2009-04-08 15:21:26.000000000 -0700
+++ kBuild-0.1.5/src/ash/output.h	2009-05-28 20:38:17.000000000 -0700
@@ -34,6 +34,10 @@
  *	@(#)output.h	8.2 (Berkeley) 5/4/95
  */
 
+/* glibc 2.10. */
+#define dprintf _dprintf
+/* done */
+
 #ifndef OUTPUT_INCL
 
 #include <stdarg.h>