?RCS: $Id: prefix.U,v 3.0.1.2 1995/01/30 14:44:05 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: Original Author: Andy Dougherty <doughera@lafcol.lafayette.edu>
?RCS:
?RCS: $Log: prefix.U,v $
?RCS: Revision 3.0.1.2  1995/01/30  14:44:05  ram
?RCS: patch49: new prefixexp variable holding a fully expanded prefix
?RCS: patch49: save off previous prefix value in oldprefix if changed (WED)
?RCS: patch49: added the INSTALLPREFIX define for C programs to use (WED)
?RCS:
?RCS: Revision 3.0.1.1  1994/08/29  16:31:34  ram
?RCS: patch32: created by ADO
?RCS:
?MAKE:prefix prefixexp +oldprefix: Getfile Loc Oldconfig cat package
?MAKE:	-pick add $@ %<
?S:prefix:
?S:	This variable holds the name of the directory below which the
?S:	user will install the package.  Usually, this is /usr/local, and
?S:	executables go in /usr/local/bin, library stuff in /usr/local/lib,
?S:	man pages in /usr/local/man, etc.  It is only used to set defaults
?S:	for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
?S:.
?S:prefixexp:
?S:	This variable holds the full absolute path of the directory below
?S:	which the user will install the package.  Derived from prefix.
?S:.
?S:oldprefix:
?S:	This variable is set non-null if the prefix was previously defined
?S:	and gets set to a new value. Used internally by Configure only.
?S:.
?C:INSTALLPREFIX:
?C:	This symbol contains the name of the install prefix for this package.
?C:.
?H:#define INSTALLPREFIX "$prefix"		/**/
?H:.
: determine root of directory hierarchy where package will be installed.
case "$prefix" in
'')
	dflt=`./loc . /usr/local /usr/local /local /opt /usr`
	;;
*)
	dflt="$prefix"
	;;
esac
$cat <<EOM

By default, $package will be installed in $dflt/bin, manual
pages under $dflt/man, etc..., i.e. with $dflt as prefix for
all installation directories. Typically set to /usr/local, but you
may choose /usr if you wish to install $package among your system
binaries. If you wish to have binaries under /bin but manual pages
under /usr/local/man, that's ok: you will be prompted separately
for each of the installation directories, the prefix being only used
to set the defaults.

EOM
fn=d~
rp='Installation prefix to use?'
. ./getfile
oldprefix=''
case "$prefix" in
'') ;;
*)
	case "$ans" in
	"$prefix") ;;
	*) oldprefix="$prefix";;
	esac
	;;
esac
prefix="$ans"
prefixexp="$ansexp"