?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: Oldconfig.U,v $
?RCS: Revision 3.0.1.10  1997/02/28  15:06:39  ram
?RCS: patch61: added support for src.U
?RCS: patch61: new OSNAME define
?RCS: patch61: can now sense new OSes
?RCS:
?RCS: Revision 3.0.1.9  1995/07/25  13:40:51  ram
?RCS: patch56: now knows about OS/2 platforms
?RCS:
?RCS: Revision 3.0.1.8  1995/05/12  12:04:18  ram
?RCS: patch54: config.sh reload logic now knows about new -K switch
?RCS: patch54: cleaned up and extended osvers for DEC OSF/1 (ADO)
?RCS: patch54: added MachTen detection (ADO)
?RCS:
?RCS: Revision 3.0.1.7  1995/02/15  14:13:41  ram
?RCS: patch51: adapted osvers computation for AIX (ADO)
?RCS:
?RCS: Revision 3.0.1.6  1995/01/30  14:27:15  ram
?RCS: patch49: unit Options.U now exports file optdef.sh, not a variable
?RCS: patch49: update code for myuname changed (WED)
?RCS:
?RCS: Revision 3.0.1.5  1995/01/11  15:15:36  ram
?RCS: patch45: added quotes around the INITPROG variable (ADO)
?RCS: patch45: allows variable overriding after config file loading
?RCS:
?RCS: Revision 3.0.1.4  1994/10/29  15:57:05  ram
?RCS: patch36: added ?F: line for metalint file checking
?RCS: patch36: merged with the version used for perl5's Configure (ADO)
?RCS:
?RCS: Revision 3.0.1.3  1994/05/06  14:24:17  ram
?RCS: patch23: added support for osf1 hints
?RCS: patch23: new support for solaris and i386 systems (ADO)
?RCS:
?RCS: Revision 3.0.1.2  1994/01/24  14:05:02  ram
?RCS: patch16: added post-processing on myuname for Xenix targets
?RCS: patch16: message proposing config.sh defaults made consistent
?RCS:
?RCS: Revision 3.0.1.1  1993/09/13  15:56:32  ram
?RCS: patch10: force use of config.sh when -d option is used (WAD)
?RCS: patch10: complain about non-existent hint files (WAD)
?RCS: patch10: added Options dependency for fastread variable
?RCS:
?RCS: Revision 3.0  1993/08/18  12:05:12  ram
?RCS: Baseline for dist 3.0 netwide release.
?RCS:
?X:
?X: This unit tries to remember what we did last time we ran Configure, mostly
?X: for the sake of setting defaults.
?X:
?MAKE:Oldconfig hint myuname osname osvers: Instruct Myread Checkcc \
	Mksymlinks Loc Options Tr src trnl ln uname sh awk sed test cat grep \
	rm lns tr n c contains targetarch
?MAKE:	-pick wipe $@ %<
?S:myuname:
?S:	The output of 'uname -a' if available, otherwise the hostname. On Xenix,
?S:	pseudo variables assignments in the output are stripped, thank you. The
?S:	whole thing is then lower-cased.
?S:.
?S:hint:
?S:	Gives the type of hints used for previous answers. May be one of
?S:	"default", "recommended" or "previous".
?S:.
?S:osname:
?S:	This variable contains the operating system name (e.g. sunos,
?S:	solaris, hpux, etc.).  It can be useful later on for setting
?S:	defaults.  Any spaces are replaced with underscores.  It is set
?S:	to a null string if we can't figure it out.
?S:.
?S:osvers:
?S:	This variable contains the operating system version (e.g.
?S:	4.1.3, 5.2, etc.).  It is primarily used for helping select
?S:	an appropriate hints file, but might be useful elsewhere for
?S:	setting defaults.  It is set to '' if we can't figure it out.
?S:	We try to be flexible about how much of the version number
?S:	to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the
?S:	same for this package, hints files might just be os_4.0 or
?S:	os_4.1, etc., not keeping separate files for each little release.
?S:.
?C:OSNAME:
?C:	This symbol contains the name of the operating system, as determined
?C:	by Configure.  You shouldn't rely on it too much; the specific
?C:	feature tests from Configure are generally more reliable.
?C:.
?C:OSVERS:
?C:	This symbol contains the version of the operating system, as determined
?C:	by Configure.  You shouldn't rely on it too much; the specific
?C:	feature tests from Configure are generally more reliable.
?C:.
?H:#define OSNAME "$osname"		/**/
?H:#define OSVERS "$osvers"		/**/
?H:.
?F:!config.sh
?T:tmp tmp_n tmp_c tmp_sh file
?T:xxxxfile xxxfile xxfile xfile hintfile newmyuname
?T:tans _ isesix INITPROG DJGPP has_uname
?D:osname=''
?LINT:change n c sh
?LINT:extern hostarch
?LINT:change hostarch
: Determine the name of the machine
myuname=`$uname -a 2>/dev/null`
$test -z "$myuname" && myuname=`hostname 2>/dev/null`
?X: Special mention for Xenix, whose 'uname -a' gives us output like this:
?X:  sysname=XENIX
?X:  nodename=whatever
?X:  release=2.3.2 .. etc...
?X: Therefore, we strip all this variable assignment junk and remove all the
?X: new lines to keep the myuname variable sane... --RAM
myuname=`echo $myuname | $sed -e 's/^[^=]*=//' -e 's/\///g' | \
	./tr '[A-Z]' '[a-z]' | $tr $trnl ' '`
?X: Save the value we just computed to reset myuname after we get done here.
newmyuname="$myuname"
$test -f "$uname$_exe" && has_uname=y

: Guessing of the OS name -- half the following guesses are probably wrong...
: If you have better tests or hints, please send them to the metaconfig
: authors and to <MAINTLOC>
$test -f /irix && osname=irix
$test -f /xenix && osname=sco_xenix
$test -f /dynix && osname=dynix
$test -f /dnix && osname=dnix
$test -f /lynx.os && osname=lynxos
$test -f /unicos && osname=unicos && osvers=`$uname -r`
$test -f /unicosmk && osname=unicosmk && osvers=`$uname -r`
$test -f /unicosmk.ar && osname=unicosmk && osvers=`$uname -r`
$test -f /bin/mips && /bin/mips && osname=mips
$test -d /NextApps && set X `hostinfo | $grep 'NeXT Mach.*:' | \
	$sed -e 's/://' -e 's/\./_/'` && osname=next && osvers=$4
$test -d /usr/apollo/bin && osname=apollo
$test -f /etc/saf/_sactab && osname=svr4
$test -d /usr/include/minix && osname=minix
$test -f /system/gnu_library/bin/ar.pm && osname=vos
if $test -d /MachTen -o -d /MachTen_Folder; then
?X:		MachTen uname -a output looks like
?X:		xxx 4 0.0 Macintosh
?X:		MachTen /sbin/version output looks like
?X:		MachTen 4.0 Mon Aug 28 10:18:00 1995
?X:		MachTen 3.x had the 'version' command in /usr/etc/version.
	osname=machten
	if $test -x /sbin/version; then
		osvers=`/sbin/version | $awk '{print $2}' |
		$sed -e 's/[A-Za-z]$//'`
	elif $test -x /usr/etc/version; then
		osvers=`/usr/etc/version | $awk '{print $2}' |
		$sed -e 's/[A-Za-z]$//'`
	else
		osvers="$2.$3"
	fi
fi
$test -f /sys/posix.dll &&
	$test -f /usr/bin/what &&
	set X `/usr/bin/what /sys/posix.dll` &&
	$test "$3" = UWIN &&
	osname=uwin &&
	osvers="$5"
?X: If we have uname, we already computed a suitable uname -a output, correctly
?X: formatted for Xenix, and it lies in $myuname.
if $test "X$has_uname" != X; then
	set X $myuname
	shift
	case "$5" in
	fps*) osname=fps ;;
	mips*)
		case "$4" in
		umips) osname=umips ;;
		*) osname=mips ;;
		esac;;
	[23]100) osname=mips ;;
	next*) osname=next ;;
?X: Interactive Unix.
	i386*)
		tmp=`/bin/uname -X 2>/dev/null|awk '/3\.2v[45]/{ print $(NF) }'`
		if $test "$tmp" != "" -a "$3" = "3.2" -a -f '/etc/systemid'; then
			osname='sco'
			osvers=$tmp
		elif $test -f /etc/kconfig; then
			osname=isc
			if $test "$lns" = "$ln -s"; then
				osvers=4
			elif $contains _SYSV3 /usr/include/stdio.h > /dev/null 2>&1 ; then
				osvers=3
			elif $contains _POSIX_SOURCE /usr/include/stdio.h > /dev/null 2>&1 ; then
				osvers=2
			fi
		fi
		tmp=''
		;;
?X: MS-DOS djgpp uname -a output looks like:
?X: ms-dos xxx 6 22 pc
?X:  $1 is the "dos flavor" (need not be "ms-dos").
?X:  $2 is the node name
?X:  $3 and $4 are version/subversion
?X:  $5 is always "pc", but that might not be unique to DJGPP.
?X: (e.g. Solaris_x86 has $5 = i86pc, which doesn't actually conflict,
?X: but it's close enought that I can easily imagine other vendors also
?X: using variants of pc* in $5.)
?X:  The "DJGPP" environment variable is always set when djgpp is active.
	pc*)
		if $test -n "$DJGPP"; then
			osname=dos
			osvers=djgpp
		fi
		;;
	esac
	case "$1" in
	aix) osname=aix
?X: aix 4.1 uname -a output looks like
?X:		AIX  foo  1 4 000123456789
?X: where $4 is the major release number and $3 is the (minor) version.
?X: More detail on the version is available with the oslevel command.
?X: in 3.2.x, it output a string (see case statements below).  In 4.1,
?X: it puts out something like  4.1.1.0
		tmp=`( (oslevel) 2>/dev/null || echo "not found") 2>&1`
		case "$tmp" in
		'not found') osvers="$4"."$3" ;;
		'<3240'|'<>3240') osvers=3.2.0 ;;
		'=3240'|'>3240'|'<3250'|'<>3250') osvers=3.2.4 ;;
		'=3250'|'>3250') osvers=3.2.5 ;;
		*) osvers=$tmp;;
		esac
		;;
	bsd386) osname=bsd386
		osvers=`$uname -r`
		;;
	cygwin*) osname=cygwin
		osvers="$3"
		;;
	*dc.osx) osname=dcosx
		osvers="$3"
		;;
	dnix) osname=dnix
		osvers="$3"
		;;
	domainos) osname=apollo
		osvers="$3"
		;;
	dgux) osname=dgux 
		osvers="$3"
		;;
?X:		uname -a returns
?X:		DYNIX/ptx xxx 4.0 V4.1.2 i386
	dynixptx*) osname=dynixptx
		osvers=`echo "$4"|sed 's/^v//'`
		;;
	freebsd) osname=freebsd 
		osvers="$3" ;;
	genix) osname=genix ;;
?X: HP-UX uname -a gives something like
?X: HP-UX foobar B.10.20 A 9000/735 2016483812 two-user license
?X: Preserve the full 10.20 string instead of the previous plain '10'.
?X:  Thanks to Graham Barr.    --AD 6/30/1998
	hp*) osname=hpux 
		osvers=`echo "$3" | $sed 's,.*\.\([0-9]*\.[0-9]*\),\1,'`
		;;
	irix*) osname=irix
		case "$3" in
		4*) osvers=4 ;;
		5*) osvers=5 ;;
		*)	osvers="$3" ;;
		esac
		;;
	linux) osname=linux
		case "$3" in
		*)	osvers="$3" ;;
		esac
		;;
	MiNT) osname=mint
		;;
	netbsd*) osname=netbsd
		osvers="$3"
		;;
	news-os) osvers="$3"
		case "$3" in
		4*) osname=newsos4 ;;
		*) osname=newsos ;;
		esac
		;;
	next*) osname=next ;;
	nonstop-ux) osname=nonstopux ;;
	openbsd) osname=openbsd
				osvers="$3"
				;;
	POSIX-BC | posix-bc ) osname=posix-bc
		osvers="$3"
		;;
	powerux | power_ux | powermax_os | powermaxos | \
	powerunix | power_unix) osname=powerux
		osvers="$3"
		;;
	qnx) osname=qnx
		osvers="$4"
		;;
	solaris) osname=solaris
		case "$3" in
		5*) osvers=`echo $3 | $sed 's/^5/2/g'` ;;
		*)	osvers="$3" ;;
		esac
		;;
	sunos) osname=sunos
		case "$3" in
		5*) osname=solaris
			osvers=`echo $3 | $sed 's/^5/2/g'` ;;
		*)	osvers="$3" ;;
		esac
		;;
	titanos) osname=titanos
		case "$3" in
		1*) osvers=1 ;;
		2*) osvers=2 ;;
		3*) osvers=3 ;;
		4*) osvers=4 ;;
		*)	osvers="$3" ;;
		esac
		;;
	ultrix) osname=ultrix
		osvers="$3"
		;;
	osf1|mls+)	case "$5" in
		alpha)
?X: DEC OSF/1 myuname -a output looks like:  osf1 xxxx t3.2 123.4 alpha
?X: where the version number can be something like [xvt]n.n
			osname=dec_osf
?X: sizer knows the minor minor version: the letter
			osvers=`sizer -v | awk '{print $3}' | \
				./tr '[A-Z]' '[a-z]' | sed 's/^[xvt]//'`
			case "$osvers" in
			[1-9].[0-9]*) ;;
			*) osvers=`echo "$3" | sed 's/^[xvt]//'` ;;
			esac
			;;
		hp*)	osname=hp_osf1	;;
		mips)	osname=mips_osf1 ;;
?X:	hp and mips were unsupported Technology Releases -- ADO, 24/10/94
		esac
		;;
	unixware) osname=svr5
		osvers="$4"
		;;
	uts)	osname=uts
		osvers="$3"
		;;
	vos) osvers="$3"
		;;
	$2) case "$osname" in
		*isc*) ;;
		*freebsd*) ;;
		svr*)
			: svr4.x or possibly later
			case "svr$3" in	
			${osname}*)
				osname=svr$3
				osvers=$4
				;;
			esac
			case "$osname" in
			svr4.0)
				: Check for ESIX
				if $test -f /stand/boot ; then
					eval `$grep '^INITPROG=[a-z/0-9]*$' /stand/boot`
					if $test -n "$INITPROG" -a -f "$INITPROG"; then
						isesix=`strings -a $INITPROG | \
							$grep 'ESIX SYSTEM V/386 Release 4.0'`
						if $test -n "$isesix"; then
							osname=esix4
						fi
					fi
				fi
				;;
			esac
			;;
		*)	if $test -f /etc/systemid; then
				osname=sco
				set `echo $3 | $sed 's/\./ /g'` $4
				if $test -f $src/hints/sco_$1_$2_$3.sh; then
					osvers=$1.$2.$3
				elif $test -f $src/hints/sco_$1_$2.sh; then
					osvers=$1.$2
				elif $test -f $src/hints/sco_$1.sh; then
					osvers=$1
				fi
			else
				case "$osname" in
				'') : Still unknown.  Probably a generic Sys V.
					osname="sysv"
					osvers="$3"
					;;
				esac
			fi
			;;
		esac
		;;
	*)	case "$osname" in
		'') : Still unknown.  Probably a generic BSD.
			osname="$1"
			osvers="$3"
			;;
		esac
		;;
	esac
else
?X: Try to identify sony's NEWS-OS (BSD unix)
	if $test -f /vmunix -a -f $src/hints/news_os.sh; then
		(what /vmunix | UU/tr '[A-Z]' '[a-z]') > UU/kernel.what 2>&1
		if $contains news-os UU/kernel.what >/dev/null 2>&1; then
			osname=news_os
		fi
		$rm -f UU/kernel.what
?X: Maybe it's OS/2 or DOS or something similar
	elif $test -d c:/.; then
		set X $myuname
		osname=os2
		osvers="$5"
	fi
fi

: Try to determine whether config.sh was made on this system
case "$config_sh" in
'')
?X: indentation wrong on purpose--RAM
dflt=n
case "$knowitall" in
'')
	if test -f ../config.sh; then
		if $contains myuname= ../config.sh >/dev/null 2>&1; then
			eval "`$grep myuname= ../config.sh`"
		fi
		if test "X$myuname" = "X$newmyuname"; then
			dflt=y
		fi
	fi
	;;
*) dflt=y;;
esac

: Get old answers from config file if it was generated on the same system
hint=default
if $test -f ../config.sh; then
	echo " "
	rp="I see a config.sh file.  Shall I use it to set the defaults?"
	. ./myread
	case "$ans" in
	n*|N*) echo "OK, I'll ignore it."
		mv ../config.sh ../config.sh.old
		myuname="$newmyuname"
		;;
	*)  echo "Fetching default answers from your old config.sh file..." >&4
		tmp_n="$n"
		tmp_c="$c"
		tmp_sh="$sh"
		. ../config.sh
		cp ../config.sh .
		n="$tmp_n"
		c="$tmp_c"
		hint=previous
		;;
	esac
fi
?X: remember, case indentation is wrong--RAM
;;
*)
	echo " "
	echo "Fetching default answers from $config_sh..." >&4
	tmp_n="$n"
	tmp_c="$c"
	tmp_sh="$sh"
	cd ..
?X: preserve symbolic links, if any
	cp $config_sh config.sh 2>/dev/null
	chmod +w config.sh
	. ./config.sh
	cd UU
	cp ../config.sh .
	n="$tmp_n"
	c="$tmp_c"
	hint=previous
	;;
esac
?X: Older versions did not always set $sh.
case "$sh" in
'') sh="$tmp_sh" ;;
esac
$test "$override" && . ./optdef.sh

: Restore computed paths
for file in $loclist $trylist; do
	eval $file="\$_$file"
done

. ./checkcc
?X: Cross-compiling support
case "$targetarch" in
'') ;;
*)  hostarch=$osname
	osname=`echo $targetarch|sed 's,^[^-]*-,,'`
	osvers=''
	;;
esac

@if {test -d ../hints}
: Offer them some hints based on their OS
cd ..
?X: Since we are now at the root of the source tree, we must use $src
?X: to access the sources and not $rsrc. See src.U for details...
if $test ! -f config.sh; then
	$cat <<EOM

First time through, eh?  I have some defaults handy for some systems
that need some extra help getting the Configure answers right:

EOM
	(cd $src/hints; ls -C *.sh) | $sed 's/\.sh/   /g' >&4
	dflt=''

	: Now look for a hint file osname_osvers, unless one has been
	: specified already.
	case "$hintfile" in
	''|' ')
		file=`echo "${osname}_${osvers}" | $sed -e 's%\.%_%g' -e 's%_$%%'`
		: Also try without trailing minor version numbers.
		xfile=`echo $file | $sed -e 's%_[^_]*$%%'`
		xxfile=`echo $xfile | $sed -e 's%_[^_]*$%%'`
		xxxfile=`echo $xxfile | $sed -e 's%_[^_]*$%%'`
		xxxxfile=`echo $xxxfile | $sed -e 's%_[^_]*$%%'`
		case "$file" in
		'') dflt=none ;;
		*)  case "$osvers" in
			'') dflt=$file
				;;
			*)  if $test -f $src/hints/$file.sh ; then
					dflt=$file
				elif $test -f $src/hints/$xfile.sh ; then
					dflt=$xfile
				elif $test -f $src/hints/$xxfile.sh ; then
					dflt=$xxfile
				elif $test -f $src/hints/$xxxfile.sh ; then
					dflt=$xxxfile
				elif $test -f $src/hints/$xxxxfile.sh ; then
					dflt=$xxxxfile
				elif $test -f "$src/hints/${osname}.sh" ; then
					dflt="${osname}"
				else
					dflt=none
				fi
				;;
			esac
			;;
		esac
		if $test -f Policy.sh ; then
			case "$dflt" in
			*Policy*) ;;
			none) dflt="Policy" ;;
			*) dflt="Policy $dflt" ;;
			esac
		fi
		;;
	*)
		dflt=`echo $hintfile | $sed 's/\.sh$//'`
		;;
	esac

	if $test -f Policy.sh ; then
		$cat <<EOM

There's also a Policy hint file available, which should make the
site-specific (policy) questions easier to answer.
EOM

	fi

	$cat <<EOM

You may give one or more space-separated answers, or "none" if appropriate.
A well-behaved OS will have no hints, so answering "none" or just "Policy"
is a good thing.  DO NOT give a wrong version or a wrong OS.

EOM

	rp="Which of these apply, if any?"
	. UU/myread
	tans=$ans
	for file in $tans; do
		if $test X$file = XPolicy -a -f Policy.sh; then
			. Policy.sh
			$cat Policy.sh >> UU/config.sh
		elif $test -f $src/hints/$file.sh; then
			. $src/hints/$file.sh
			$cat $src/hints/$file.sh >> UU/config.sh
		elif $test X"$tans" = X -o X"$tans" = Xnone ; then
			: nothing
		else
			: Give one chance to correct a possible typo.
			echo "$file.sh does not exist"
			dflt=$file
			rp="hint to use instead?"
			. UU/myread
			for file in $ans; do
				if $test -f "$src/hints/$file.sh"; then
					. $src/hints/$file.sh
					$cat $src/hints/$file.sh >> UU/config.sh
				elif $test X$ans = X -o X$ans = Xnone ; then
					: nothing
				else
					echo "$file.sh does not exist -- ignored."
				fi
			done
		fi
	done

	hint=recommended
	: Remember our hint file for later.
	if $test -f "$src/hints/$file.sh" ; then
		hintfile="$file"
	else
		hintfile=''
	fi
fi
cd UU
?X: From here on, we must use $rsrc instead of $src

@end
: Process their -A options
. ./posthint.sh

@if osname || osvers
: Ask them to confirm the OS name
cat << EOM

Configure uses the operating system name and version to set some defaults.
The default value is probably right if the name rings a bell. Otherwise,
since spelling matters for me, either accept the default or answer "none"
to leave it blank.

EOM
@end
@if osname
case "$osname" in
	''|' ')
		case "$hintfile" in
		''|' '|none) dflt=none ;;
		*)  dflt=`echo $hintfile | $sed -e 's/\.sh$//' -e 's/_.*$//'` ;;
		esac
		;;
	*) dflt="$osname" ;;
esac
rp="Operating system name?"
. ./myread
case "$ans" in
none)  osname='' ;;
*) osname=`echo "$ans" | $sed -e 's/[ 	][	]*/_/g' | ./tr '[A-Z]' '[a-z]'`;;
esac
@end
@if osvers
@if osname
echo " "
@end
case "$osvers" in
	''|' ')
		case "$hintfile" in
		''|' '|none) dflt=none ;;
		*)	dflt=`echo $hintfile | $sed -e 's/\.sh$//' -e 's/^[^_]*//'`
			dflt=`echo $dflt | $sed -e 's/^_//' -e 's/_/./g'`
			case "$dflt" in
			''|' ') dflt=none ;;
			esac
			;;
		esac
		;;
	*) dflt="$osvers" ;;
esac
rp="Operating system version?"
. ./myread
case "$ans" in
none)  osvers='' ;;
*) osvers="$ans" ;;
esac

@end
