eval "use $module";
my $obj = $module->new($options);

##</code><code>##

eval "require $module";
my $obj = $module->new($options);

##</code><code>##

(my $filename = $module) =~ s[::][/]g;
$filename .= '.pm';
eval { require $filename };
my $obj = $module->new($options);