===================================================================
RCS file: /cvs/mandoc/configure.local.example,v
retrieving revision 1.42
retrieving revision 1.43
diff -u -p -r1.42 -r1.43
--- mandoc/configure.local.example	2021/09/20 10:19:51	1.42
+++ mandoc/configure.local.example	2021/09/20 13:25:42	1.43
@@ -1,4 +1,4 @@
-# $Id: configure.local.example,v 1.42 2021/09/20 10:19:51 schwarze Exp $
+# $Id: configure.local.example,v 1.43 2021/09/20 13:25:42 schwarze Exp $
 #
 # Copyright (c) 2014-2021 Ingo Schwarze <schwarze@openbsd.org>
 #
@@ -291,6 +291,8 @@ CGIBINDIR="${WWWPREFIX}/cgi-bin"
 # To enable it, use the following line.
 # It does not work on SunOS 5.10 because there is no mkdirat(2)
 # nor on SunOS 5.9 which also lacks CMSG_LEN(3) and CMSG_SPACE(3).
+# It may not work on old releases of Mac OS X either.  For example,
+# Mac OS X 10.4 Tiger provides neither mkdirat(2) nor openat(2).
 
 BUILD_CATMAN=1