openssl/util/clean-depend.pl

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Perl
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#!/usr/local/bin/perl -w
# Clean the dependency list in a makefile of standard includes...
# Written by Ben Laurie <ben@algroup.co.uk> 19 Jan 1999
use strict;
use Cwd;
my $path = getcwd();
$path =~ /([^\/]+)$/;
$path = $1;
while(<STDIN>) {
print;
last if /^# DO NOT DELETE THIS LINE/;
}
my %files;
# Fetch all the dependency output first
my $thisfile="";
while(<STDIN>) {
my ($dummy, $file,$deps)=/^((.*):)? (.*)$/;
$thisfile=$file if defined $file;
next if !defined $deps;
my @deps=split ' ',$deps;
@deps=grep(!/^\\$/,@deps);
push @{$files{$thisfile}},@deps;
}
my $file;
# Time to clean out possible system directories and normalise quirks
# from different makedepend methods
foreach $file (sort keys %files) {
# This gets around a quirk with gcc, which removes all directory
# information from the original file
my $tmpfile=$file;
$tmpfile=~s/\.o$/.c/;
(my $origfile)=grep(/(^|\/)${tmpfile}$/,@{$files{$file}});
my $newfile=$origfile;
$newfile=~s/\.c$/.o/;
if ($newfile ne $file) {
$files{$newfile} = $files{$file};
delete $files{$file};
$file = $newfile;
}
@{$files{$file}} =
grep(!/^\//,
grep(!/^$origfile$/, @{$files{$file}}));
}
foreach $file (sort keys %files) {
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my $len=0;
my $dep;
my $origfile=$file;
$origfile=~s/\.o$/.c/;
$file=~s/^\.\///;
push @{$files{$file}},$origfile;
my $prevdep="";
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# Remove leading ./ before sorting
my @deps = map { $_ =~ s/^\.\///; $_ } @{$files{$file}};
# Remove ../thisdir/
@deps = map { $_ =~ s|^../$path/||; $_ } @deps;
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foreach $dep (sort @deps) {
$dep=~s/^\.\///;
next if $prevdep eq $dep; # to exterminate duplicates...
$prevdep = $dep;
$len=0 if $len+length($dep)+1 >= 80;
if($len == 0) {
print "\n$file:";
$len=length($file)+1;
}
print " $dep";
$len+=length($dep)+1;
}
}
print "\n";