--- lib/getloadavg.c.orig	2009-01-06 11:21:45.023986000 -0600
+++ lib/getloadavg.c	2009-01-06 11:22:08.599351000 -0600
@@ -407,6 +407,7 @@
 # endif /* LOAD_AVE_TYPE */
 
 # if defined HAVE_LIBPERFSTAT
+#  include <sys/protosw.h>
 #  include <libperfstat.h>
 #  include <sys/proc.h>
 #  ifndef SBITS