apc_fetch under PHP 8

[JastrzebskiKrzysztof]

php-apcu-bc is dropped in PHP 8
Also https://pecl.php.net/package/apcu_bc have no compatible release.
Setting: $APC_ON = false; in config.php or trying to workaround in functions.php:
if ($haveAPC && ini_get('apc.enabled')) {
$APC_ON = false;
} else {
$APC_ON = false;
}
still issues: "Call to undefined function apc_fetch()".
It makes waf-fle unusable under many distributions (debian bookworm for example).