Index: Makefile
diff -u Makefile.orig Makefile
--- Makefile.orig	2007-07-20 06:21:50.000000000 +0900
+++ Makefile	2008-02-19 18:42:44.000000000 +0900
@@ -3,7 +3,9 @@
 #	make
 # For FreeBSD 2.X:
 #	make freebsd2
-# For FreeBSD 3.X or later:
+# For FreeBSD 3.X and 4.X:
+#	make freebsd3
+# For FreeBSD 5.X or later:
 #	make freebsd
 # For NetBSD 1.5 - 1.6.X
 #	make netbsd1
@@ -116,7 +118,7 @@
 export MANDIR SMANDIR MANDIRMODE MANMODE
 export OS_NAME OS_RELEASE
 
-enable_nls=1
+enable_nls?=1
 debug=0
 export enable_nls
 export debug
