1da2e3ebdSchin# SHOPT_* option probe
2da2e3ebdSchin
3da2e3ebdSchintst	cross{
4da2e3ebdSchin	: check for shell magic #!
5da2e3ebdSchin	cat > /tmp/file$$ <<!
6da2e3ebdSchin	#! /bin/echo
7da2e3ebdSchin	exit 1
8da2e3ebdSchin	!
9da2e3ebdSchin	chmod 755 /tmp/file$$
10da2e3ebdSchin	if	/tmp/file$$ > /dev/null
11da2e3ebdSchin	then	echo "#define SHELLMAGIC	1"
12da2e3ebdSchin	fi
13da2e3ebdSchin	rm -f /tmp/file$$
14da2e3ebdSchin
15da2e3ebdSchin	option() # name value
16da2e3ebdSchin	{
17da2e3ebdSchin		case $2 in
18da2e3ebdSchin		0)	echo "#ifndef SHOPT_$1"
19da2e3ebdSchin			echo "#   define SHOPT_$1	1"
20da2e3ebdSchin			echo "#endif"
21da2e3ebdSchin			;;
22da2e3ebdSchin		*)	echo "#undef  SHOPT_$1"
23da2e3ebdSchin			;;
24da2e3ebdSchin		esac
25da2e3ebdSchin	}
26da2e3ebdSchin
277c2fbfb3SApril Chin	ls /dev/fd/9 9<&0 >/dev/null 2>&1
28da2e3ebdSchin	option DEVFD $?
297c2fbfb3SApril Chin	exec 9<&-
30da2e3ebdSchin	case  `echo a | tr a '\012' | wc -l` in
31da2e3ebdSchin	*1*)	option MULTIBYTE 0 ;;
32da2e3ebdSchin	esac
33da2e3ebdSchin	test -x /bin/pfexec -o -x /usr/bin/pfexec
34da2e3ebdSchin	option PFSH $?
35da2e3ebdSchin	/bin/test ! -l . 2> /dev/null
36da2e3ebdSchin	option TEST_L $?
37da2e3ebdSchin	test -f /etc/ksh.kshrc -o -f /etc/bash.bashrc &&
38da2e3ebdSchin	option SYSRC 0
39da2e3ebdSchin	test -f /bin/universe && univ=`/bin/universe` > /dev/null 2>&1 -a ucb = "$univ"
40da2e3ebdSchin	option UCB $?
41da2e3ebdSchin}end
42da2e3ebdSchin
43da2e3ebdSchincat{
44da2e3ebdSchin	#if !_PACKAGE_ast && ( (MB_LEN_MAX-1)<=0 || !defined(_lib_mbtowc) )
45da2e3ebdSchin	#   undef SHOPT_MULTIBYTE
46da2e3ebdSchin	#endif
47da2e3ebdSchin}end
48