/[jscoverage]/trunk/js/build/unix/mddepend.pl
ViewVC logotype

Annotation of /trunk/js/build/unix/mddepend.pl

Parent Directory Parent Directory | Revision Log Revision Log


Revision 507 - (hide annotations)
Sun Jan 10 07:23:34 2010 UTC (12 years, 5 months ago) by siliconforks
File MIME type: text/plain
File size: 5190 byte(s)
Update SpiderMonkey from Firefox 3.6rc1.

1 siliconforks 399 #!/usr/bin/env perl
2    
3     # ***** BEGIN LICENSE BLOCK *****
4     # Version: MPL 1.1/GPL 2.0/LGPL 2.1
5     #
6     # The contents of this file are subject to the Mozilla Public License Version
7     # 1.1 (the "License"); you may not use this file except in compliance with
8     # the License. You may obtain a copy of the License at
9     # http://www.mozilla.org/MPL/
10     #
11     # Software distributed under the License is distributed on an "AS IS" basis,
12     # WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13     # for the specific language governing rights and limitations under the
14     # License.
15     #
16     # The Original Code is this file as it was released upon March 8, 1999.
17     #
18     # The Initial Developer of the Original Code is
19     # Netscape Communications Corporation.
20     # Portions created by the Initial Developer are Copyright (C) 1999
21     # the Initial Developer. All Rights Reserved.
22     #
23     # Contributor(s):
24     #
25     # Alternatively, the contents of this file may be used under the terms of
26     # either of the GNU General Public License Version 2 or later (the "GPL"),
27     # or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
28     # in which case the provisions of the GPL or the LGPL are applicable instead
29     # of those above. If you wish to allow use of your version of this file only
30     # under the terms of either the GPL or the LGPL, and not to allow others to
31     # use your version of this file under the terms of the MPL, indicate your
32     # decision by deleting the provisions above and replace them with the notice
33     # and other provisions required by the GPL or the LGPL. If you do not delete
34     # the provisions above, a recipient may use your version of this file under
35     # the terms of any one of the MPL, the GPL or the LGPL.
36     #
37     # ***** END LICENSE BLOCK *****
38    
39     # mddepend.pl - Reads in dependencies generated my -MD flag. Prints list
40     # of objects that need to be rebuilt. These can then be added to the
41     # PHONY target. Using this script copes with the problem of header
42     # files that have been removed from the build.
43     #
44     # Usage:
45     # mddepend.pl <output_file> <dependency_files...>
46     #
47     # Send comments, improvements, bugs to Steve Lamm (slamm@netscape.com).
48    
49     use strict;
50    
51     use constant DEBUG => 0;
52    
53     my $outfile = shift @ARGV;
54     my $silent = $ENV{MAKEFLAGS} =~ /^\w*s|\s-s/;
55    
56     my $line = '';
57     my %alldeps;
58     # Parse dependency files
59     while (<>) {
60     s/\r?\n$//; # Handle both unix and DOS line endings
61     $line .= $_;
62     if ($line =~ /\\$/) {
63     chop $line;
64     next;
65     }
66    
67 siliconforks 507 $line =~ s|\\|/|g;
68    
69 siliconforks 399 my ($obj,$rest) = split /\s*:\s+/, $line, 2;
70     $line = '';
71     next if !$obj || !$rest;
72    
73     my @deps = split /\s+/, $rest;
74     push @{$alldeps{$obj}}, @deps;
75     if (DEBUG >= 2) {
76     foreach my $dep (@deps) { print "add $obj $dep\n"; }
77     }
78     }
79    
80     # Test dependencies
81     my %modtimes; # cache
82     my @objs; # force rebuild on these
83     OBJ_LOOP: foreach my $obj (keys %alldeps) {
84     my $mtime = (stat $obj)[9] or next;
85    
86     my %not_in_cache;
87     my $deps = $alldeps{$obj};
88     foreach my $dep_file (@{$deps}) {
89     my $dep_mtime = $modtimes{$dep_file};
90     if (not defined $dep_mtime) {
91     print "Skipping $dep_file for $obj, will stat() later\n" if DEBUG >= 2;
92     $not_in_cache{$dep_file} = 1;
93     next;
94     }
95    
96     print "Found $dep_file in cache\n" if DEBUG >= 2;
97    
98     if ($dep_mtime > $mtime) {
99     print "$dep_file($dep_mtime) newer than $obj($mtime)\n" if DEBUG;
100     }
101     elsif ($dep_mtime == -1) {
102     print "Couldn't stat $dep_file for $obj\n" if DEBUG;
103     }
104     else {
105     print "$dep_file($dep_mtime) older than $obj($mtime)\n" if DEBUG >= 2;
106     next;
107     }
108    
109     push @objs, $obj; # dependency is missing or newer
110     next OBJ_LOOP; # skip checking the rest of the dependencies
111     }
112    
113     foreach my $dep_file (keys %not_in_cache) {
114     print "STAT $dep_file for $obj\n" if DEBUG >= 2;
115     my $dep_mtime = $modtimes{$dep_file} = (stat $dep_file)[9] || -1;
116    
117     if ($dep_mtime > $mtime) {
118     print "$dep_file($dep_mtime) newer than $obj($mtime)\n" if DEBUG;
119     }
120     elsif ($dep_mtime == -1) {
121     print "Couldn't stat $dep_file for $obj\n" if DEBUG;
122     }
123     else {
124     print "$dep_file($dep_mtime) older than $obj($mtime)\n" if DEBUG >= 2;
125     next;
126     }
127    
128     push @objs, $obj; # dependency is missing or newer
129     next OBJ_LOOP; # skip checking the rest of the dependencies
130     }
131    
132     # If we get here it means nothing needs to be done for $obj
133     }
134    
135     # Output objects to rebuild (if needed).
136     if (@objs) {
137     my $old_output;
138     my $new_output = "@objs: FORCE\n";
139    
140     # Read in the current dependencies file.
141     open(OLD, "<$outfile")
142     and $old_output = <OLD>;
143     close(OLD);
144    
145     # Only write out the dependencies if they are different.
146     if ($new_output ne $old_output) {
147     open(OUT, ">$outfile") and print OUT "$new_output";
148     print "Updating dependencies file, $outfile\n" unless $silent;
149     if (DEBUG) {
150     print "new: $new_output\n";
151     print "was: $old_output\n" if $old_output ne '';
152     }
153     }
154     } elsif (-s $outfile) {
155     # Remove the old dependencies because all objects are up to date.
156     print "Removing old dependencies file, $outfile\n" unless $silent;
157    
158     if (DEBUG) {
159     my $old_output;
160     open(OLD, "<$outfile")
161     and $old_output = <OLD>;
162     close(OLD);
163     print "was: $old_output\n";
164     }
165    
166     unlink $outfile;
167     }

  ViewVC Help
Powered by ViewVC 1.1.24