xref: /freebsd/usr.bin/mkdep/mkdep.sh (revision 42249ef2) 
1#!/bin/sh -
2#
3# SPDX-License-Identifier: BSD-3-Clause
4#
5# Copyright (c) 1991, 1993
6#	The Regents of the University of California.  All rights reserved.
7#
8# Redistribution and use in source and binary forms, with or without
9# modification, are permitted provided that the following conditions
10# are met:
11# 1. Redistributions of source code must retain the above copyright
12#    notice, this list of conditions and the following disclaimer.
13# 2. Redistributions in binary form must reproduce the above copyright
14#    notice, this list of conditions and the following disclaimer in the
15#    documentation and/or other materials provided with the distribution.
16# 3. Neither the name of the University nor the names of its contributors
17#    may be used to endorse or promote products derived from this software
18#    without specific prior written permission.
19#
20# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30# SUCH DAMAGE.
31#
32# $FreeBSD$
33#
34#	@(#)mkdep.sh	8.1 (Berkeley) 6/6/93
35#
36
37PATH=/bin:/usr/bin:/usr/ucb:/usr/old/bin
38export PATH
39
40D=.depend			# default dependency file is .depend
41append=0
42
43while :
44	do case "$1" in
45		# -a appends to the depend file
46		-a)
47			append=1
48			shift ;;
49
50		# -f allows you to select a makefile name
51		-f)
52			D=$2
53			shift; shift ;;
54
55		# the -p flag produces "program: program.c" style dependencies
56		# so .o's don't get produced
57		-p)
58			SED='s;\.o ; ;'
59			shift ;;
60		*)
61			break ;;
62	esac
63done
64
65if [ $# = 0 ] ; then
66	echo 'usage: mkdep [-p] [-f depend_file] [cc_flags] file ...'
67	exit 1
68fi
69
70TMP=/tmp/mkdep$$
71
72trap 'rm -f $TMP ; trap 2 ; kill -2 $$' 1 2 3 13 15
73
74cc -M $* |
75sed "
76	s; \./; ;g
77	/\.c:$/d
78	$SED" |
79awk '{
80	if ($1 != prev) {
81		if (rec != "")
82			print rec;
83		rec = $0;
84		prev = $1;
85	}
86	else {
87		if (length(rec $2) > 78) {
88			print rec;
89			rec = $0;
90		}
91		else
92			rec = rec " " $2
93	}
94}
95END {
96	print rec
97}' > $TMP
98
99if [ $? != 0 ]; then
100	echo 'mkdep: compile failed.'
101	rm -f $TMP
102	exit 1
103fi
104
105if [ $append = 1 ]; then
106	cat $TMP >> $D
107	rm -f $TMP
108else
109	mv $TMP $D
110fi
111exit 0
112