private function interpretApacheInfoVariable(string $line)
    {
        $content = preg_split('/^\\s+-D\\s+/', $line, 2);
        if (count($content) === 2) {
            $parts = preg_split('/=/', $content[1], 2);
            if (count($parts) === 2) {
                $this->apache_compiles[$parts[0]] = str_replace('"', '', $parts[1]);
            } elseif (count($parts) === 1) {
                $this->apache_compiles[$content[1]] = true;
            }
        }
    }