#!/bin/sh -
#
#	BSDI $Id: mkdep.gcc.sh,v 2.1 1995/02/03 12:54:13 polk 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.gcc.sh	8.1 (Berkeley) 6/6/93
#

PATH=/bin:/usr/bin:/usr/gnu/bin:/usr/local/bin:/usr/local/bin/gnu
export PATH

cpp=${CPP:-gcc}
#trad="-notraditional"

D=depends			# default dependency file is depends
append=0
pflag=

usage()
{
	echo 'usage: mkdep [-t] [-p] [-f depend_file] [-c compiler] [cc_flags] file ...' >&2
}

while getopts "2af:c:pt" opt; do
	case "$opt" in
	# -2 => gcc2 -- this option is temporary, hence not documented
	2)	cpp=${CPP:-gcc2} ; trad= ;;
	# -a appends to the depend file
	a)	append=1;;
	# -c specifies the compiler to use
	c)	CPP=$OPTARG ;;
	# -f allows you to select a makefile name
	f)	D=$OPTARG ;;
	# the -p flag produces "program: program.c" style dependencies
	# so .o's don't get produced
	p)	pflag=p ;;
	# -t means use -traditional with gnu cpp
	t)	trad="-traditional" ;;
	\?)	usage ; exit 2;;
	esac
done

shift $(( $OPTIND - 1 ))

if [ $# = 0 ] ; then
	usage
	exit 1
fi

TMP=/tmp/mkdep$$

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

if [ x$pflag = x ]; then
	$cpp $trad -M $* | sed -e 's; \./; ;g' > $TMP
else
	$cpp $trad -M $* | sed -e 's;\.o *:;:;' -e 's; \./; ;g' > $TMP
fi

if [ $? != 0 ]; then
	echo 'mkdep: compile failed.'
	rm -f $TMP
	exit 1
fi

if [ $append = 1 ]; then
	cat $TMP >> $D
	rm -f $TMP
else
	mv $TMP $D
fi
exit 0