===================================================================
RCS file: /cvs/mandoc/configure.local.example,v
retrieving revision 1.23
retrieving revision 1.25
diff -u -p -r1.23 -r1.25
--- mandoc/configure.local.example	2017/02/04 12:03:07	1.23
+++ mandoc/configure.local.example	2017/02/08 16:16:08	1.25
@@ -1,4 +1,4 @@
-# $Id: configure.local.example,v 1.23 2017/02/04 12:03:07 schwarze Exp $
+# $Id: configure.local.example,v 1.25 2017/02/08 16:16:08 schwarze Exp $
 #
 # Copyright (c) 2014, 2015, 2016 Ingo Schwarze <schwarze@openbsd.org>
 #
@@ -140,6 +140,12 @@ CFLAGS="${CFLAGS} -I/usr/local/include"
 
 LD_NANOSLEEP="-lrt"
 
+# Some platforms may need an additional linker flag for recvmsg(2).
+# If none is needed or it is -lsocket, it is autodetected.
+# Otherwise, set the following variable.
+
+LD_RECVMSG="-lsocket"
+
 # Some platforms might need additional linker flags to link against
 # libmandoc that are not autodetected, though no such cases are
 # currently known.
@@ -216,6 +222,8 @@ CGIBINDIR="${WWWPREFIX}/cgi-bin"
 
 # By default, building mandocd(8) and catman(8) is disabled.
 # 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).
 
 BUILD_CATMAN=1