- GNU make
- a recent C compiler, preferably CLANG
- libpcre2 development headers + libraries
- libc-ares development headers + libraries, for case DNS reverse lookups
- openssl 3.x development headers + libraries, for TLS/DTLS support
- Perl. Plus a couple of modules: 
  - Authen::Simple::RADIUS
  - Crypt::Passwd::XS
  - Data::Radius
  - File::Temp
  - Getopt::Long
  - Net::Frame::Simple
  - Net::Frame::Layer::IPv4
  - Net::Frame::Layer::IPv6
  - Net::Frame::Layer::UDP
  - Net::IP
  - Net::RawIP
  - Net::Write::Layer
  - Net::Write::Layer3
  - Net::LDAP
  - Net::TacacsPlus
  - Sys::Syslog
  - POSIX
  (and possibly some I've missed to add)
- Python (optional)