buildroot/package/systemd/Config.in

config BR2_PACKAGE_SYSTEMD
	bool "systemd"
	depends on BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_UDEV
	depends on BR2_INET_IPV6
	depends on BR2_TOOLCHAIN_HAS_THREADS # dbus
	depends on BR2_USE_MMU # dbus
	select BR2_PACKAGE_DBUS
	select BR2_PACKAGE_LIBCAP
	help
	  systemd is a system and service manager for Linux, compatible with
	  SysV and LSB init scripts. systemd provides aggressive parallelization
	  capabilities, uses socket and D-Bus activation for starting services,
	  offers on-demand starting of daemons, keeps track of processes using
	  Linux cgroups, supports snapshotting and restoring of the system
	  state, maintains mount and automount points and implements an
	  elaborate transactional dependency-based service control logic.
	  It can work as a drop-in replacement for sysvinit.

	  http://freedesktop.org/wiki/Software/systemd

comment "systemd not available (depends on /dev management with udev and ipv6 support, and thread support in toolchain)"
	depends on !BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_UDEV || !BR2_INET_IPV6 || \\
		!BR2_TOOLCHAIN_HAS_THREADS