?RCS: $Id: ipc.U,v 3.0 1993/08/18 12:08:53 ram Exp $
?RCS:
?RCS: Copyright (c) 1991-1993, Raphael Manfredi
?RCS: 
?RCS: You may redistribute only under the terms of the Artistic Licence,
?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 Licence; a copy of which may be found at the root
?RCS: of the source tree for dist 3.0.
?RCS:
?RCS: $Log: ipc.U,v $
?RCS: Revision 3.0  1993/08/18  12:08:53  ram
?RCS: Baseline for dist 3.0 netwide release.
?RCS:
?MAKE:ipc serve_shm serve_msg serve_inet_udp serve_inet_tcp serve_unix_udp \
	serve_unix_tcp: test Myread Oldconfig d_socket d_msg d_shm d_sem
?MAKE:	-pick add $@ %<
?LINT:use d_msg d_sem
?S:ipc:
?S:	This variable holds the type of IPC service we'll be using.  Values
?S:	include "ip", "shm", "msg", "cms" and "os9".  We don't worry about
?S:	cms or os9 here, because Configure doesn't run in those places--HMS.
?S:.
?S:serve_shm:
?S:	This variable controls the definition of SERVE_SHM, which tells the
?S:	C program to use USG shared memory for IPC.
?S:.
?S:serve_msg:
?S:	This variable controls the definition of SERVE_MSG, which tells the
?S:	C program to use USG message queues for IPC.
?S:.
?S:serve_inet_udp:
?S:	This variable controls the definition of SERVE_INET_UDP, which tells
?S:	the C program to enable InterNet-domain UDP support for IPC.
?S:.
?S:serve_inet_tcp:
?S:	This variable controls the definition of SERVE_INET_TCP, which tells
?S:	the C program to enable InterNet-domain TCP support for IPC.
?S:.
?S:serve_unix_udp:
?S:	This variable controls the definition of SERVE_UNIX_UDP, which tells
?S:	the C program to enable Unix-domain UDP support for IPC.
?S:.
?S:serve_unix_tcp:
?S:	This variable controls the definition of SERVE_UNIX_TCP, which tells
?S:	the C program to enable Unix-domain TCP support for IPC.
?S:.
?C:SERVE_SHM:
?C:	If defined, tells the C program to use USG shared memory for IPC.
?C:.
?C:SERVE_MSG:
?C:	If defined, tells the C program to use USG message queues for IPC.
?C:.
?C:SERVE_INET_UDP:
?C:	If defined, tells the C program to enable InterNet-domain UDP
?C:	support for IPC.
?C:.
?C:SERVE_INET_TCP:
?C:	If defined, tells the C program to enable InterNet-domain TCP
?C:	support for IPC.
?C:.
?C:SERVE_UNIX_UDP:
?C:	If defined, tells the C program to enable Unix-domain UDP
?C:	support for IPC.
?C:.
?C:SERVE_UNIX_TCP:
?C:	If defined, tells the C program to enable Unix-domain TCP
?C:	support for IPC.
?C:.
?H:#$serve_shm	SERVE_SHM	/**/
?H:#$serve_msg	SERVE_MSG	/**/
?H:#$serve_inet_udp	SERVE_INET_UDP	/**/
?H:#$serve_inet_tcp	SERVE_INET_TCP	/**/
?H:#$serve_unix_udp	SERVE_UNIX_UDP	/**/
?H:#$serve_unix_tcp	SERVE_UNIX_TCP	/**/
?H:.
?X: FIXME -- RAM
?INIT:serve_shm=''
?INIT:serve_msg="$undef"
?INIT:serve_inet_udp=''
?INIT:serve_inet_tcp=''
?INIT:serve_unix_udp=''
?INIT:serve_unix_tcp=''
: get IPC mechanism
echo " "
ipc=''
while $test -z "$ipc"
do
	if $test "$ipc" != "shm" -a "$d_socket" = "$define"; then
		ipc=''
		if $test "$serve_inet_udp" = "$undef"; then
			dflt=n
		else
			dflt=y
		fi
		rp='Provide InterNet-domain UDP service?'
		. ./myread
		dflt=''
		case "$ans" in
		n*) serve_inet_udp="$undef";;
		*)
			serve_inet_udp="$define"
			ipc='ip'
			;;
		esac

		if $test "$serve_inet_tcp" = "$define"; then
			dflt=y
		else
			dflt=n
		fi
		rp='Provide InterNet-domain TCP service?'
		. ./myread
		dflt=''
		case "$ans" in
		n*) serve_inet_tcp="$undef";;
		*)
			serve_inet_tcp="$define"
			ipc='ip'
			;;
		esac

		if $test "$serve_unix_udp" = "$define"; then
			dflt=y
		else
			dflt=n
		fi
		rp='Provide Unix-domain UDP service?'
		. ./myread
		dflt=''
		case "$ans" in
		n*) serve_unix_udp="$undef";;
		*)
			serve_unix_udp="$define"
			ipc='ip'
			;;
		esac

		if $test "$serve_unix_tcp" = "$define"; then
			dflt=y
		else
			dflt=n
		fi
		rp='Provide Unix-domain TCP service?'
		. ./myread
		dflt=''
		case "$ans" in
		n*) serve_unix_tcp="$undef";;
		*)
			serve_unix_tcp="$define"
			ipc='ip'
			;;
		esac
	else
		serve_inet_udp="$undef"
		serve_inet_tcp="$undef"
		serve_unix_udp="$undef"
		serve_unix_tcp="$undef"
	fi
	if $test "$ipc" != "ip" -a "$d_shm" = "$define"; then
		echo "Providing USG shared memory IPC support." >&4
		serve_shm="$define"
		ipc='shm'
	else
		serve_shm="$undef"
	fi
	if $test -z "$ipc"; then
		echo "You must select an IPC mechanism." >&4
	fi
done