--- unionfs-20060811-0102/Makefile.kernel	2006/08/21 15:15:58
+++ unionfs-20060811-0102/Makefile.kernel	2006/08/21 15:16:08
@@ -7,6 +7,7 @@
 
 # This will enable full debugging support
 # EXTRA_CFLAGS+=-DUNIONFS_DEBUG
+EXTRA_CFLAGS+=-DUNIONFS_NDEBUG -DUNIONFS_UNSUPPORTED # -DUNIONFS_MMAP
 
 obj-$(CONFIG_UNION_FS) += unionfs.o
 
