?RCS: $Id: install.U,v 3.0.1.2 1995/09/25 09:16:37 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: install.U,v $
?RCS: Revision 3.0.1.2  1995/09/25  09:16:37  ram
?RCS: patch59: all possible install programs are now looked for
?RCS:
?RCS: Revision 3.0.1.1  1995/01/11  15:30:41  ram
?RCS: patch45: created
?RCS:
?MAKE:install installdir: Loc Oldconfig Getfile cat test startsh rm +cc \
	eunicefix package contains mkdir echo n c
?MAKE:	-pick add $@ %<
?S:install:
?S:	This variable contains the name of an install program that can accept
?S:	BSD-style arguments. It must correctly support -c, -s, and -m at least.
?S:	It is a fully qualified pathname when found. If you have a local
?S:	install.SH file at the root directory of your package, it is assumed to
?S:	be the default script emulating a BSD install and the variable will be
?S:	set to ./install. Otherwise, it is set to plain 'install', relying on
?S:	the user's PATH to perform miracles.
?S:.
?S:installdir:
?S:	This variable contains the name of a program that can install nested
?S:	directories. Often set to 'mkdir -p', it can also be 'install -d' if
?S:	you have such a beast and lack the former. If you have an install.SH
?S:	file at the root directory of your package, it will be used in last
?S:	resort, setting the variable to './install -d'. Otherwise, it is set to
?S:	plain 'mkdir', and cross your fingers!
?S:.
?T:dir file tryit prog creatdir either
: locate a BSD compatible install program
echo " "
echo "Looking for a BSD-compatible install program..." >&4
@if installdir
creatdir=''
@end
case "$install" in
'')
	tryit=''
	for dir in $pth; do
		for file in ginstall installbsd scoinst install; do
			if $test -f $dir/$file; then
				tryit="$tryit $dir/$file"
			fi
		done
	done
	$cat >try.c <<EOC
main()
{
	printf("OK\n");
	exit(0);
}
EOC
	if $cc try.c -o try >/dev/null 2>&1; then
		cp try try.ns
		strip try >/dev/null 2>&1
	else
		echo "(I can't seem to compile a trivial C program -- bypassing.)"
		echo "try" >try
		cp try try.ns
	fi
	$cat >tryinst <<EOS
$startsh
$rm -rf foo d
@if installdir
\$1 -d foo/bar
@end
$mkdir d
\$1 -c -m 764 try.ns d
\$1 -c -s -m 642 try.ns d/try
EOS
	chmod +x tryinst
	$eunicefix tryinst
	dflt=''
	either=''
	for prog in $tryit; do
		$echo $n "Checking $prog... $c"
		./tryinst $prog >/dev/null 2>&1
@if installdir
		if $test -d foo/bar; then
			creatdir="$prog -d"
		fi
@end
		(ls -l d/try >try.ls; ls -l d/try.ns >tryno.ls) 2>/dev/null
		if (cmp -s d/try try && cmp -s d/try.ns try.ns && \
			$contains 'rwxrw-r--' tryno.ls && \
			$contains 'rw-r---w-' try.ls) >/dev/null 2>&1
		then
			dflt="$prog"
			echo "ok, that will do."
			break
		fi
		echo "not good$either."
		either=' either'
		$rm -f try*.ls
	done
	$rm -rf foo d tryinst try try*.ls try.*
	case "$dflt" in
	'')
@if {test -f ../install.SH}
		echo "Hopefully, $package comes with its own install script!"
		dflt='./install'
@else
		dflt='install'
@end
		;;
	esac
	;;
*) dflt="$install";;
esac
$cat <<EOM

I will be requiring a BSD-compatible install program (one that allows
options like -s to strip executables or -m to specify a file mode) to
install $package.

If the question below contains a fully qualified default path, then it
is probably ok. If it is an unqualified name such as 'install', then it
means I was unable to find out a good install program I could use. If
@if {test -f ../install.SH}
you know of one, please tell me about it. If the default is './install',
then I shall be using the install script supplied with $package.
@else
you know of one, please tell me about it.
@end

EOM
@if {test -f ../install.SH}
fn='/fe~(install,./install)'
@else
fn='/fe~(install)'
@end
rp='Which install program shall I use?'
. ./getfile
install="$ans"

@if installdir
: how can we create nested directories?
echo " "
echo "Ok, let's see how we can create nested directories..." >&4
case "$installdir" in
'')
?X: First time, maybe we already found out a working one in $creatdir above...
	case "$creatdir" in
	'')
		$mkdir -p foo/bar >/dev/null 2>&1
		if $test -d foo/bar; then
			echo "Great, we can build them using 'mkdir -p'."
			creatdir='mkdir -p'
		elif eval "$install -d foo/bar"; $test -d foo/bar; then
			creatdir="install -d"
			echo "It looks like '$creatdir' will do it for us."
		fi
		;;
	*)
		eval "$creatdir foo/bar" >/dev/null 2>&1
		if $test -d foo/bar; then
			echo "Ah! We can use '$creatdir' to do just that."
		fi
		;;
	esac
	$rm -rf foo
	case "$creatdir" in
	'')
		echo "Heck! Another ancient system lacking the comfort of modern ones!"
@if {test -f ../install.SH}
		echo "You can thank $package for bringing you its own install script!"
		installdir='./install -d'
@else
		echo "We have no choice but to use plain old 'mkdir' -- wish me luck!"
		installdir=mkdir
@end
		;;
	*) installdir="$creatdir";;
	esac
	;;
*) echo "As you already told me, '$installdir' should work.";;
esac

@end
