mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-25 22:01:30 +00:00
118 lines
3.2 KiB
Perl
Executable File
118 lines
3.2 KiB
Perl
Executable File
#!/usr/bin/env perl
|
|
|
|
# The contents of this file are subject to the Netscape Public
|
|
# License Version 1.1 (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.
|
|
#
|
|
# Contributor(s):
|
|
|
|
# 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 <output_file> <dependency_files...>
|
|
#
|
|
# Send comments, improvements, bugs to Steve Lamm (slamm@netscape.com).
|
|
|
|
#$debug = 1;
|
|
|
|
$outfile = shift @ARGV;
|
|
|
|
@alldeps=();
|
|
# Parse dependency files
|
|
while ($line = <STDIN>) {
|
|
chomp $line;
|
|
# Remove extra ^M caused by using dos-mode line-endings
|
|
chop $line if (substr($line, -1, 1) eq "\r");
|
|
($obj,$rest) = split /\s*:\s+/, $line, 2;
|
|
next if $obj eq '';
|
|
|
|
if ($line =~ /\\$/) {
|
|
chop $rest;
|
|
$hasSlash = 1;
|
|
} else {
|
|
$hasSlash = 0;
|
|
}
|
|
$deps = [ $obj, split /\s+/, $rest ];
|
|
|
|
while ($hasSlash and $line = <STDIN>) {
|
|
chomp $line;
|
|
if ($line =~ /\\$/) {
|
|
chop $line;
|
|
} else {
|
|
$hasSlash = 0;
|
|
}
|
|
$line =~ s/^\s+//;
|
|
push @{$deps}, split /\s+/, $line;
|
|
}
|
|
warn "add @{$deps}\n" if $debug;
|
|
push @alldeps, $deps;
|
|
}
|
|
|
|
# Test dependencies
|
|
foreach $deps (@alldeps) {
|
|
$obj = shift @{$deps};
|
|
|
|
$mtime = (stat $obj)[9] or next;
|
|
|
|
foreach $dep_file (@{$deps}) {
|
|
if (not defined($dep_mtime = $modtimes{$dep_file})) {
|
|
$dep_mtime = (stat $dep_file)[9];
|
|
$modtimes{$dep_file} = $dep_mtime;
|
|
}
|
|
if ($dep_mtime ne '' and $dep_mtime > $mtime) {
|
|
print "$obj($mtime) older than $dep_file($dep_mtime)\n" if $debug;
|
|
push @objs, $obj;
|
|
# Object will be marked for rebuild. No need to check other dependencies.
|
|
last;
|
|
}
|
|
}
|
|
}
|
|
|
|
# Output objects to rebuild (if needed).
|
|
if (@objs) {
|
|
$new_output = "@objs: FORCE\n";
|
|
|
|
# Read in the current dependencies file.
|
|
open(OLD, "<$outfile")
|
|
and $old_output = <OLD>;
|
|
close(OLD);
|
|
|
|
# Only write out the dependencies if they are different.
|
|
if ($new_output ne $old_output) {
|
|
open(OUT, ">$outfile") and binmode(OUT) and print OUT "$new_output";
|
|
print "Updating dependencies file, $outfile\n";
|
|
if ($debug) {
|
|
print "new: $new_output\n";
|
|
print "was: $old_output\n" if $old_output ne '';
|
|
}
|
|
}
|
|
} elsif (-s $outfile) {
|
|
# Remove the old dependencies because all objects are up to date.
|
|
print "Removing old dependencies file, $outfile\n";
|
|
|
|
if ($debug) {
|
|
open(OLD, "<$outfile")
|
|
and $old_output = <OLD>;
|
|
close(OLD);
|
|
print "was: $old_output\n";
|
|
}
|
|
|
|
unlink $outfile;
|
|
}
|