#!perl
use strict;
my %deploy;
my $objdump = $ENV{objdump} ? $ENV{objdump} : "i686-w64-mingw32-objdump";
my @searchdirs = split(/:/, $ENV{PATH});

sub addDependenciesFor($) {
    open OBJDUMP, "-|", $objdump, "-p", $_[0] or die;
    while (<OBJDUMP>) {
        last if /^The Import Tables/;
    }
    while (<OBJDUMP>) {
        next unless /DLL Name: (.*)/;
        $deploy{$1} = 0 unless defined($deploy{$1});
        last if /^\w/;
    }
    close OBJDUMP;
}

sub findMissingDependencies {
    for my $name (keys %deploy) {
        next if $deploy{$name};
        my $path;
        for my $dir (@searchdirs) {
            my $fpath = "$dir/$name";
            my $lcfpath = "$dir/" . lc($name);
            if (-e $fpath) {
                $path = $fpath;
            } elsif (-e $lcfpath) {
                $path = $lcfpath;
            } else {
                next;
            }
            addDependenciesFor($path);
            last;
        }

        $path = "/missing/file" unless $path;
        $deploy{$name} = $path;
    }
}

for (@ARGV) {
    s/^-L//;
    next if /^-/;
    if (-d $_) {
        push @searchdirs, $_;
    } elsif (-f $_) {
        $deploy{$_} = $_;
        addDependenciesFor($_);
    }
}

while (1) {
    findMissingDependencies();

    my $i = 0;
    while (my ($name, $path) = each(%deploy)) {
        next if $path;
        ++$i;
        last;
    }
    last if $i == 0;
}

for (sort values %deploy) {
    next if $_ eq "/missing/file";
    print "$_\n";
}