[FreeBSD] QDnsLookup fails with error "Resolver functions not found"

Greetings,

The problem is exactly as explained in the summary, I also created a simple program to reproduce it: https://github.com/davidebeatrici/qdnslookup_test

According to FreeBSD's manual page, the required functions are in libc: https://www.freebsd.org/cgi/man.cgi?query=res_query&sektion=3&apropos=0&manpath=freebsd

However, Qt only tries to load the symbols from LIBRESOLV_SO (if defined) and resolv:

https://code.qt.io/cgit/qt/qtbase.git/tree/src/network/kernel/qdnslookup_unix.cpp#n90

Best regards,

Davide