Does not build on FreeBSD

[jTd7bPLFb]

Describe the bug
Does not compile on FreeBSD 14.1 nor 15.0

/sandbox/beldex/src/cryptonote_config.h:239:45: error: constexpr variable 'NETWORK_ID' must be initialized by a constant expression

To Reproduce
Follow the instructions you have in the git, to build on FreeBSD.

Expected behaviour
Would be nice to compile.
Only app holding my migration for FreeBSD.
The Linux version does not run in linux jails either.

Current Behaviour

first of the errors
/sandbox/beldex/src/cryptonote_config.h:239:45: error: constexpr variable 'NETWORK_ID' must be initialized by a constant expression

Screenshots or Logs
/sandbox/beldex/src/cryptonote_config.h:239:45: error: constexpr variable 'NETWORK_ID' must be initialized by a constant expression

Additional Information (please complete the following information):
FreeBSD 14.1
beldexd from your git