#!/bin/sh -

##
## Modified to handle -vpath <path> option by Michael Graff, ISC.
## The purpose of this is to allow this script to run outside of the
## source directory, for instance when running configure with
##   ../bind9-mainline/configure
## and still have "make depend" work.
##

# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
# Copyright (c) 1987 Regents of the University of California.
# Copyright (c) 1993 by Digital Equipment Corporation.
#
# SPDX-License-Identifier: MPL-2.0
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0.  If a copy of the MPL was not distributed with this
# file, you can obtain one at https://mozilla.org/MPL/2.0/.
#
# See the COPYRIGHT file distributed with this work for additional
# information regarding copyright ownership.

#
#	@(#)mkdep.sh	5.12 (Berkeley) 6/30/88
#

MAKE=Makefile			# default makefile name is "Makefile"

while :
	do case "$1" in
		# -vpath allows one to select a virtual path for .c files
		-vpath)
			VPATH=$2;
			shift; shift ;;
		# -f allows you to select a makefile name
		-f)
			MAKE=$2
			shift; shift ;;

		# the -p flag produces "program: program.c" style dependencies
		# so .o's don't get produced
		-p)
			SED='s;\.o;;'
			shift ;;
		*)
			break ;;
	esac
done

if [ $# = 0 ] ; then
	echo 'usage: mkdep [-vpath path] [-p] [-f makefile] [flags] file ...'
	exit 1
fi

if [ ! -w $MAKE ]; then
	echo "mkdep: no writeable file \"$MAKE\""
	exit 1
fi

TMP=mkdep$$

trap 'rm -f $TMP ; exit 1' 1 2 3 13 15

cp $MAKE ${MAKE}.bak

sed -e '/DO NOT DELETE THIS LINE/,$d' < $MAKE > $TMP

cat << _EOF_ >> $TMP
# DO NOT DELETE THIS LINE -- mkdep uses it.
# DO NOT PUT ANYTHING AFTER THIS LINE, IT WILL GO AWAY.

_EOF_

# If your compiler doesn't have -M, add it.  If you can't, the next two
# lines will try and replace the "cc -M".  The real problem is that this
# hack can't deal with anything that requires a search path, and doesn't
# even try for anything using bracket (<>) syntax.
#
# egrep '^#include[ 	]*".*"' /dev/null $* |
# sed -e 's/:[^"]*"\([^"]*\)".*/: \1/' -e 's/\.c/.o/' |

if [ X"${VPATH}" != X ] ; then
    for arg in $* ; do
	case "$arg" in
	    -*)
		newargs="$newargs $arg"
		;;
	    *)
		newargs="$newargs $VPATH/$arg"
		;;
	esac
    done
else
    newargs="$*";
fi

MKDEPPROG="@MKDEPPROG@"
if [ X"${MKDEPPROG}" != X ]; then
    @SHELL@ -c "${MKDEPPROG} ${newargs}"
else
    @MKDEPCC@ @MKDEPCFLAGS@ ${newargs} |
    sed "
	s; \\./; ;g
	s; \\\\; ;g
	@LIBTOOL_MKDEP_SED@
	$SED" |
    awk '$1 ~ /:$/ {
		if (rec != "")
			 print rec;
		if (NF == 1)
			rec = $1;
		else
			rec = $1 " " $2;
		for (i = 3; i <= NF; i++) {
			if (length(rec $i) > 76) {
				print rec " \\";
				rec = "    " $i;
			} else {
				rec = rec " " $i;
			}
		}
		next;
	}
	{
		for (i = 1; i <= NF; i++) {
			if (length(rec $i) > 76) {
				print rec, "\\";
				rec =  "    " $i;
			} else {
				rec = rec " " $i;
			}
		}
	}
    END {
	print rec
    }' >> $TMP
fi

cat << _EOF_ >> $TMP

# IF YOU PUT ANYTHING HERE IT WILL GO AWAY
_EOF_

# copy to preserve permissions
cp $TMP $MAKE
rm -f ${MAKE}.bak $TMP
exit 0