diff -ur --unidirectional-new-file skipsrc-1.0.orig/skip/freebsd/Makefile.defs work.new/skip/freebsd/Makefile.defs
--- skipsrc-1.0.orig/skip/freebsd/Makefile.defs	Fri Oct 25 13:12:42 1996
+++ work.new/skip/freebsd/Makefile.defs	Wed Feb  2 11:30:42 2000
@@ -93,7 +93,7 @@
 
 # Kernel compilation flags
 #
-K_FLAGS_FREEBSD_gnu	= -DKERNEL -DFREEBSD
+K_FLAGS_FREEBSD_gnu	= -DKERNEL -D_KERNEL -DKLD_MODULE -I/sys
 
 # OS Libraries
 #