#!@BSHELL@ -
#
#	$NetBSD: host-mkdep.in,v 1.9 2003/06/10 21:34:02 christos Exp $
#
# Copyright (c) 1991, 1993
#	The Regents of the University of California.  All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
# 3. All advertising materials mentioning features or use of this software
#    must display the following acknowledgement:
#	This product includes software developed by the University of
#	California, Berkeley and its contributors.
# 4. Neither the name of the University nor the names of its contributors
#    may be used to endorse or promote products derived from this software
#    without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
#	@(#)mkdep.old.compiler	8.1 (Berkeley) 6/6/93
#

APPEND=false
CPPFLAGS=
NEWEXT=.o
OUTFILE=.depend
SRCS=
USAGE="Usage: $0 [-a] [-p] [-f makefile] [flags] file ..."

while [ $# -gt 0 ]; do
	case "$1" in
	-a)	APPEND=true
		shift
		;;

	-f)	OUTFILE=$2
		shift 2
		;;

	-p)	NEWEXT=
		shift
		;;

	*)	break
		;;
	esac
done

if [ $# = 0 ]; then
	echo "$USAGE" 1>&2
	exit 1
fi

while [ $# -gt 0 ]; do
	case "$1" in
	-L)			# takes an arg, but ignored
			shift 2
			;;

	-c|-[lLMOW]*)		# takes no extra args
			shift
			;;

	-[IDU]*)
			CPPFLAGS="$CPPFLAGS $1"
			shift
			;;

	-[IDU]|-include|-isystem)
			CPPFLAGS="$CPPFLAGS $1 $2"
			shift 2
			;;

	-no-cpp-precomp)	# This is a Darwin-specific option.
			CPPFLAGS="$CPPFLAGS $1"
			shift
			;;

	-nostdinc*)	# This is a gcc/g++ ism; ignore if not gcc/g++
			case "@CFLAGS@" in
			*-O2*)	# Autoconf puts -O2 when gcc only
				CPPFLAGS="$CPPFLAGS $1"
				;;
			esac	
			shift
			;;

	-*)		
			echo "$0: Unknown option: $1" 1>&2 # all other -options
			exit 1
			;;

	*)	
			SRCS="$SRCS $1"	# source file
			shift
			;;
	esac
done

if [ -z "$SRCS" ]; then
	echo "$0: Warning no sources specified." 1>&2
	exit 0
fi

TMP=/tmp/mkdep$$
rm -f $TMP

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

for f in $SRCS; do
	@CPP@ $CPPFLAGS $f | @AWK@ '
		BEGIN {
			objfile = "'$f'"
			sub(/^.*\//, "", objfile)
			sub(/\.(c|cc|m)$/, "'$NEWEXT'", objfile)
		}
		/^#/ {
			# Be as tolerant as possible.
			sub(/^#(line)? [ 0-9]*\"?/, "")
			sub(/^#(pragma).*/, "")
			sub(/^<.*/, "")
			sub(/\".*$/, "")
			sub(/ [ 0-9]*$/, "")

			if ($0 in seenfiles) next
			if ($0 ~ /y.tab.c/) next

			seenfiles[$0] = 1
			print objfile ": " $0
		}
	' >> $TMP
done

if $APPEND; then
	cat $TMP >> $OUTFILE
else
	cat $TMP > $OUTFILE
fi

rm -f $TMP
exit 0