Is there an existing issue for this?

• I have searched the existing issues

Current behaviour

With the move to CMake, WITH_DBUS becomes a Linux only feature:
cmake_dependent_option(WITH_DBUS "Enable DBus support." ON "CMAKE_SYSTEM_NAME STREQUAL \"Linux\" AND BUILD_GUI" OFF)

Expected behaviour

This should be enabled on any UNIX-like. Or alternatively disabled on WIN32.

Steps to reproduce

cmake -DWITH_GUI -DWITH_DBUS on FreeBSD or other UNIX

Relevant log output

No response

How did you obtain Bitcoin Core

Compiled from source

What version of Bitcoin Core are you using?

v29.0

Operating system and version

FreeBSD CURRENT

Machine specifications

No response