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+?RCS: $Id$
+?RCS:
+?RCS: Copyright (c) 1991-1997, 2004-2006, Raphael Manfredi
+?RCS:
+?RCS: You may redistribute only under the terms of the Artistic License,
+?RCS: as specified in the README file that comes with the distribution.
+?RCS: You may reuse parts of this distribution only within the terms of
+?RCS: that same Artistic License; a copy of which may be found at the root
+?RCS: of the source tree for dist 4.0.
+?RCS:
+?RCS: $Log: d_msg.U,v $
+?RCS: Revision 3.0 1993/08/18 12:06:37 ram
+?RCS: Baseline for dist 3.0 netwide release.
+?RCS:
+?MAKE:d_msg: test d_msgctl d_msgget d_msgsnd d_msgrcv Setvar Findhdr osname
+?MAKE: -pick add $@ %<
+?S:d_msg:
+?S: This variable conditionally defines the HAS_MSG symbol, which
+?S: indicates that the entire msg*(2) library is present.
+?S:.
+?C:HAS_MSG:
+?C: This symbol, if defined, indicates that the entire msg*(2) library is
+?C: supported (IPC mechanism based on message queues).
+?C:.
+?H:#$d_msg HAS_MSG /**/
+?H:.
+?T:h_msg
+?LINT:set d_msg
+: see how much of the 'msg*(2)' library is present.
+h_msg=true
+echo " "
+case "$d_msgctl$d_msgget$d_msgsnd$d_msgrcv" in
+*"$undef"*) h_msg=false;;
+esac
+case "$osname" in
+freebsd)
+ case "`ipcs 2>&1`" in
+ "SVID messages"*"not configured"*)
+ echo "Your $osname does not have the msg*(2) configured." >&4
+ h_msg=false
+ val="$undef"
+ set msgctl d_msgctl
+ eval $setvar
+ set msgget d_msgget
+ eval $setvar
+ set msgsnd d_msgsnd
+ eval $setvar
+ set msgrcv d_msgrcv
+ eval $setvar
+ ;;
+ esac
+ ;;
+esac
+: we could also check for sys/ipc.h ...
+if $h_msg && $test `./findhdr sys/msg.h`; then
+ echo "You have the full msg*(2) library." >&4
+ val="$define"
+else
+ echo "You don't have the full msg*(2) library." >&4
+ val="$undef"
+fi
+set d_msg
+eval $setvar
+