#!/bin/sh -
#
#	$NetBSD: mkdep.gcc.sh,v 1.14 1998/04/09 05:59:35 fair 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
#

# If the user has set ${CC} then we use it, otherwise we use 'cc'.
# We try to find the compiler in the user's path, and if that fails we
# try to find it in the default path.  If we can't find it, we punt.
# Once we find it, we canonicalize its name and set the path to the
# default path so that other commands we use are picked properly.

if ! type "${CC:=cc}" > /dev/null 2>&1; then
	PATH=/bin:/usr/bin
	export PATH
	if ! type "${CC}" > /dev/null 2>&1; then
		echo "mkdep: ${CC}: not found"
		exit 1
	fi
fi
cmd='set -- `type "${CC}"` ; eval echo \$$#'
CC=`eval $cmd`
export CC

D=.depend			# default dependency file is .depend
append=0
pflag=

while :
	do case "$1" in
		# -a appends to the depend file
		-a)
			append=1
			shift ;;

		# -f allows you to select a makefile name
		-f)
			D=$2
			shift; shift ;;

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

if [ $# = 0 ] ; then
	echo 'usage: mkdep [-p] [-f depend_file] [cc_flags] file ...'
	exit 1
fi

TMP=_mkdep$$

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

if [ x$pflag = x ]; then
	${CC} -M "$@" | sed -e 's;\([ \t][ \t]*\)\./;\1;g' > $TMP
else
	${CC} -M "$@" | sed -e 's;\.o\([ \t]*\):;\1:;' -e 's;\([ \t][ \t]*\)\./;\1;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
