  --enable-systemd-logind Build systemd-logind support (default: auto)
  --with-systemd-daemon   support systemd socket activation (default: auto)
  SYSTEMD_DAEMON_CFLAGS
              C compiler flags for SYSTEMD_DAEMON, overriding pkg-config
  SYSTEMD_DAEMON_LIBS
              linker flags for SYSTEMD_DAEMON, overriding pkg-config
  --enable-ipv6           Enable IPv6 support
  DBUS_CFLAGS C compiler flags for DBUS, overriding pkg-config
  DBUS_LIBS   linker flags for DBUS, overriding pkg-config
