/audio/ and $ret .= "\tselect AUDIO_SUPPORT\n";
/display/ and $ret .= "\tselect DISPLAY_SUPPORT\n";
/gpio/ and $ret .= "\tselect GPIO_SUPPORT\n";
/audio/ and $ret .= "\tselect AUDIO_SUPPORT\n";
/display/ and $ret .= "\tselect DISPLAY_SUPPORT\n";
/gpio/ and $ret .= "\tselect GPIO_SUPPORT\n";