1#!/usr/bin/perl
2#
3# Created: Thu Aug 15 11:57:33 1996 too
4# Last modified: Mon Dec 27 09:23:56 1999 too
5#
6# Copyright (c) 1996-1999 Tomi Ollila.  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#
17# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
20# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
25# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
26# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28die "Usage: mkdep CPP-command [CPP options] file1 [file2...]\n"
29  if ($#ARGV < 1);
30
31$cmdl = shift(@ARGV);
32
33$cmdl = "$cmdl " . shift (@ARGV) while ($ARGV[0] =~ /^-[A-Z]/);
34
35while ($file = shift(@ARGV))
36{
37    $file =~ s/\.o$/.c/;
38
39    open(F, "$cmdl $file|");
40
41    &parseout;
42
43    close(F);
44}
45
46
47sub initinit
48{
49    %used = ();
50    $of = $file;
51    $of =~ s/\.c$/.lo/;
52    $str = "$of:\t$file";
53    $len = length $str;
54}
55
56sub initstr
57{
58    $str = "\t";
59    $len = length $str;
60}
61
62sub parseout
63{
64    &initinit;
65    while (<F>)
66    {
67        s/\\\\/\//g;
68	next unless (/^# [0-9]* "(.*\.h)"/);
69
70	next if ($1 =~ /^\//);
71
72	next if $used{$1};
73
74        $used{$1} = 1;
75
76	$nlen = length($1) + 1;
77
78	if ($len + $nlen > 72)
79	{
80	    print $str, "\\\n";
81	    &initstr;
82	    $str = $str . $1;
83	}
84	else { $str = $str . " " . $1; }
85
86	$len += $nlen;
87
88    }
89    print $str, "\n";
90}
91