ObjFW  Diff

				"OFSelectKernelEventObserver.m")
		])
		;;
	esac

	AC_CHECK_HEADERS(ifaddrs.h netpacket/packet.h)
	AC_CHECK_FUNC(getifaddrs, [
		AC_DEFINE(OF_HAVE_GETIFADDRS, 1, [Whether we have getifaddrs()])
		AC_DEFINE(OF_SYSTEM_INFO_HAS_NETWORK_INTERFACES, 1,
			[Whether OFSystemInfo has network interfaces])
	])
	AC_CHECK_TYPES([struct sockaddr_ll], [], [], [
		#ifdef HAVE_NETPACKET_PACKET_H
		# include <netpacket/packet.h>
		#endif
	])