?RCS: $Id: abortsig.U,v 3.0.1.1 1994/10/29 16:02:19 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: abortsig.U,v $
?RCS: Revision 3.0.1.1  1994/10/29  16:02:19  ram
?RCS: patch36: call ./usg explicitely instead of relying on PATH
?RCS:
?RCS: Revision 3.0  1993/08/18  12:05:20  ram
?RCS: Baseline for dist 3.0 netwide release.
?RCS:
?MAKE:abortsig: Myread Oldconfig Guess cat Compile rm
?MAKE:	-pick add $@ %<
?S:abortsig:
?S:	This variable holds the name of the signal used by the abort() call.
?S:.
?C:ABORTSIG:
?C:	This symbol holds the signal number (symbol) used by the abort() call. To
?C:	actually define the signal symbol, <signal.h> should be included.
?C:.
?H:#define ABORTSIG $abortsig		/**/
?H:.
?T:signal
: which signal is sent by abort ?
echo " "
case "$abortsig" in
'')
	echo "Checking to see which signal is sent to the process by abort()..." >&4
	echo "abort" > abort.sh
	chmod +x abort.sh
?X: SIGABRT should replace SIGIOT on USG machines in a near future (1991).
	for signal in SIGIOT SIGILL SIGABRT; do
		case "$abortsig" in
		'') $cat >abort.c <<EOP
#include <signal.h>
caught() { exit(0); }
int main()
{
#ifdef $signal
	signal($signal, caught);
#endif
	if (-1 == abort())
		exit(1);
	exit(1);
}
EOP
?X: We have to use the abort.sh script otherwise sh behaves strangely on AIX.
			set abort
			if eval $compile; then
				(./abort.sh) >/dev/null 2>&1
				case $? in
				0) abortsig="$signal";;
				esac
			fi
			;;
		esac
	done
	;;
esac
case "$abortsig" in
'') echo "(I wasn't able to compute the signal name--guessing)"
	if ./usg; then
		dflt="SIGIOT"
	else
		dflt="SIGILL"
	fi;;
*)  dflt="$abortsig"
	;;
esac
rp="Which signal does abort() send to the process (signal name)?"
. ./myread
abortsig="$ans"
$rm -f core abort.sh abort abort.c