CMD=${CMD-/bin/make}
ARK=${ARK-lib.a}
#
# This script will make various version of ksh for different machines
# You can invoke this command with a few flags and one argument which
# is the name of the object file for the shell
#
JOBLIB= U370= DATA=data FIXDATA=text LFLAGS=-n Options= files= EDIT= \
	EMACS=${EMACS-emacs.o} VI=${VI-vi.o} MYIO= JOBS=${JOBS-jobs.o} \
	SUID_EXEC=suid_exec
# check to see if segmentation faults work
if	test -r option.init
then	. ./option.init
	# check to see if /bin/echo behaves like BSD echo
else	if	test -f /bin/echo -a X"`/bin/echo -n`" = X
	then	Options="$Options ECHO_N=-DECHO_N"
	fi
	# check for 16-bit machines
	cat > try.c  <<\!
	main() { int i = 0200000; exit(i!=0); }
!
	cc -c try.c
	# check to see if -z flag works
	if	cc -z -o try try.o 2> /dev/null
	then	LFLAGS=-z
	else	if	cc -n -o try try.o 2> /dev/null
		then	LFLAGS=-n
		else	cc -o try try.o
		fi
	fi
	if	./try
	then	LDFLAGS=-i
	fi
	# check to see if _sibuf already in library
	cat > try.c  <<\!
	extern char _sibuf[];
	main() { exit(_sibuf[0]); }
!
	cc  -o try try.c 2> /dev/null || Options="$Options NOBUF=-DNOBUF"
	rm -f try try.c try.o
	echo "Options='$Options'" > option.init
fi
while	true
do	case $1 in
	-a*)	# accounting
		Options="$Options ACCT=-DACCT" ;;
	-j*)	# job monitor
		JOBS=jobs.o ;;
	+j*)	# job monitor off
		JOBS= ;;
	-e*|+v*)	# emacs mode only
		VI= ;;
	-v*|+e*)	# vi mode only
		EMACS= ;;
	-r*)	# vi raw only mode
		Options="$Options VIRAW=-DRAWONLY" ;;
	-m*)	# multibyte version
		Options="$Options MULTIBYTE=-DMULTIBYTE" ;;
	-f*)
		VFORK=1 ;;
	+f*)
		VFORK= ;;
	-s*)
		SUID_EXEC=suid_exec ;;
	+s*)
		SUID_EXEC= ;;
	-4.2)	# BSD 4_2
		Options="$Options DBSD=-DBSD D4_2=-DBSD_4_2" \
		LFLAGS=-z JOBS=jobs.o ;;
	-*)
		echo "USAGE: $0 [-e] [+e] [-f] [+f] [-j] [+j] [-m] [-r] [-s] [+s] [-v] [+v] [-4.2] [name]"
		exit 1 ;;
	*)
		break ;;
	esac
	shift
done
sh=${1-ksh}
if	test -d /dev/fd		# new research UNIX feature
then	Options="$Options DEVFD=-DDEVFD"
fi
# if	test -d /dev/sxt	# sxt driver available
# then	Options="$Options SXT=-DSXT"
# fi
if	test -f /vmunix -o "$SYSTYPE" = bsd4.1 -o "$SYSTYPE" = bsd4.2 # true for BSD unix
then	JOBLIB=-ljobs Options="$Options DBSD=-DBSD" JOBS=jobs.o LFLAGS=-z
	if	test -f /etc/networks #BSD 4.2
	then	Options="$Options D4_2=-DBSD_4_2" JOBLIB=
	fi
	if	test -d /usr/suntool -o -f /usr/bin/suntools #sun workstations
	then	Options="$Options NOBUF=-DNOBUF" DATA='data$$'
	fi
elif	test -f /usr/include/sys/vmparam.h -a -f /usr/include/sys/stream.h # true for 8th edition
then	JOBLIB=-ljobs Options="$Options DBSD=-DBSD" JOBS=jobs.o LFLAGS=-z
elif	test -f /venix
then	LFLAGS=-i Options="$Options VIRAW=-DRAWONLY VENIX=-DVENIX" \
		JOBS= MYIO=stdio.o
elif	test -f /xenix
then	LFLAGS=-i Options="$Options VIRAW=-DRAWONLY XENIX=-DXENIX" \
		JOBS= MYIO=stdio.o
elif	test -f /bin/uts && /bin/uts		# uts system
then	if	test -x /etc/preroot 		# true for u370 on uts
	then	FIXDATA=code DATA=idat
	fi
elif	test -f /bin/u370 && /bin/u370
	then	U370=U370 FIXDATA=code DATA=idat Options="$Options NOBUF=-DNOBUF"
elif	test -f /bin/pdp11 && /bin/pdp11
then	LFLAGS=-i MYIO=stdio.o
	if	test "$EMACS"
	then	Options="$Options VIRAW=-DRAWONLY"	#save text space
		SUID_EXEC=
	fi
elif	test -f /bin/iAPX286 && /bin/iAPX286
then	LFLAGS=-i MYIO=stdio.o
	if	test "$EMACS" -a "$VI"		# no room for both
	then	EMACS=
	fi
	if	test "$VI"
	then	Options="$Options VIRAW=-DRAWONLY"	#save text space
	fi
else	if	uname -m 2> /dev/null > /dev/null
	then	set -- `uname -m`
		case "$1" in
		pdp*)
			LFLAGS=-i
			;;
		ibm-pc*)
			LFLAGS=-i Options="$Options VIRAW=-DRAWONLY"
			;;
		esac
	else	set -- `uname -r`
		case "$1" in
		[23].*)
			LFLAGS=-n Options="$Options VIRAW=-DRAWONLY"
			;;
		esac
	fi
fi
if	test -f /sys/apollo_logo		# true for APOLLO DOMAIN
then	FIXDATA= Options="$Options VIRAW=-DRAWONLY NOBUF=-DNOBUF" \
	MYIO=apollo.o VFORK=1
fi
if	test "$EMACS$VI"
then	EDIT=edit.o
fi
if	test "$EMACS"
then	Options="$Options DESH=-DESH" EMACS=emacs.o
else	Options="$Options DESH= EMACS="
fi
if	test "$VI"
then	Options="$Options DVSH=-DVSH" VI=vi.o
else	Options="$Options DVSH= VI="
fi
if	test "$JOBS"
then	Options="$Options DJOBS=-DJOBS" JOBS=jobs.o
else	Options="$Options DJOBS= JOBS="
fi
if	test "$VFORK"
then	Options="$Options DVFORK=-DVFORK" VFORK=vfork.o
else	Options="$Options DVFORK= VFORK="
fi
if	test X"$LFLAGS" = X-i
then	Options="$Options INT16=-DINT16" FIXDATA=
fi
# test for Japanese version of shell
if	test -f /usr/lib/dic/euc.dic
then	Options="$Options MULTIBYTE=-DMULTIBYTE"
fi
if	test "$SUID_EXEC"
then	Options="$Options SUID_EXEC=-DSUID_EXEC"
else	Options="$Options SUID_EXEC="
fi
$CMD JOBLIB=$JOBLIB JOBS=$JOBS U370=$U370 LFLAGS=$LFLAGS ARK=$ARK DATA=$DATA \
	FIXDATA="$FIXDATA" $Options EDIT=$EDIT EMACS=$EMACS VI=$VI \
	JOBS=$JOBS VFORK=$VFORK MYIO=$MYIO $sh $SUID_EXEC