4store code uses pcre. This library is discontinued upstream for years and is disappearing from Linux distributions. Please port to PCRE2, another regex library, make use of modern language features that support regex, or remove pcre usage.

openSUSE: https://lists.opensuse.org/archives/list/[email protected]/thread/BK3SPPFOM3LI6K5PTXPKZMKMIUIPOEXS/
Fedora: https://fedoraproject.org/wiki/Changes/PcreDeprecation
Debian: https://lists.debian.org/debian-devel/2021/11/msg00176.html
AUR: https://archlinux.org/todo/move-to-pcre2/