gecko-dev/config/mddepend.pl

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#!/usr/bin/env perl
# The contents of this file are subject to the Netscape Public License
# Version 1.0 (the "License"); you may not use this file except in
# compliance with the License. You may obtain a copy of the License at
# http://www.mozilla.org/NPL/
#
# Software distributed under the License is distributed on an "AS IS"
# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
# License for the specific language governing rights and limitations
# under the License.
#
# The Original Code is this file as it was released upon March 8, 1999.
#
# The Initial Developer of the Original Code is Netscape Communications
# Corporation. Portions created by Netscape are Copyright (C) 1999
# Netscape Communications Corporation. All Rights Reserved.
# mddepend.pl - Reads in dependencies generated my -MD flag. Prints list
# of objects that need to be rebuilt. These can then be added to the
# PHONY target. Using this script copes with the problem of header
# files that have been removed from the build.
#
# Usage:
# mddepend.pl <dependency files>
#
# Send comments, improvements, bugs to Steve Lamm (slamm@netscape.com).
@alldeps=();
# Parse dependency files
while ($line = <>) {
chomp $line;
($obj,$rest) = split /:\s+/o, $line, 2;
next if $obj eq '';
if ($line =~ /\\$/o) {
chop $rest;
$hasSlash = 1;
} else {
$hasSlash = 0;
}
$deps = [ $obj, split /\s+/o, $rest ];
while ($hasSlash and $line = <>) {
chomp $line;
if ($line =~ /\\$/o) {
chop $line;
} else {
$hasSlash = 0;
}
$line =~ s/^\s+//o;
push @{$deps}, split /\s+/o, $line;
}
push @alldeps, $deps;
}
# Test dependencies
foreach $deps (@alldeps) {
$obj = shift @{$deps};
($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
$atime,$mtime,$ctime,$blksize,$blocks) = stat($obj)
or next;
foreach $dep_file (@{$deps}) {
if (not defined($dep_mtime = $modtimes{$dep_file})) {
($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
$atime,$dep_mtime,$ctime,$blksize,$blocks) = stat($dep_file);
$modtimes{$dep_file} = $dep_mtime;
}
if ($dep_mtime eq '' or $dep_mtime > $mtime) {
print "$obj ";
$haveObjects = 1;
last;
}
}
}
print ": FORCE\n" if $haveObjects;