RIOT/Makefile.dep

#
OLD_USEMODULE := $(sort $(USEMODULE))
OLD_USEPKG := $(sort $(USEPKG))

# include board dependencies
-include $(RIOTBOARD)/$(BOARD)/Makefile.dep

# include external modules dependencies
# processed before RIOT ones to be evaluated before the 'default' rules.
-include $(EXTERNAL_MODULE_DIRS:%=%/Makefile.dep)

# pull dependencies from sys and drivers
include $(RIOTBASE)/sys/Makefile.dep
include $(RIOTBASE)/drivers/Makefile.dep

ifneq (,$(filter ndn-riot,$(USEPKG)))
  USEMODULE += gnrc
  USEMODULE += xtimer
  USEMODULE += random
  USEMODULE += hashes
  USEPKG += micro-ecc
endif

ifneq (,$(filter csma_sender,$(USEMODULE)))
  USEMODULE += random
  USEMODULE += xtimer
endif

ifneq (,$(filter gnrc_mac,$(USEMODULE)))
  USEMODULE += gnrc_priority_pktqueue
  USEMODULE += csma_sender
endif

ifneq (,$(filter gnrc_gomach,$(USEMODULE)))
  USEMODULE += gnrc_netif
  USEMODULE += random
  USEMODULE += xtimer
  USEMODULE += gnrc_mac
  FEATURES_REQUIRED += periph_rtt
endif

ifneq (,$(filter nhdp,$(USEMODULE)))
  USEMODULE += sock_udp
  USEMODULE += xtimer
  USEMODULE += oonf_rfc5444
endif

ifneq (,$(filter sntp,$(USEMODULE)))
  USEMODULE += gnrc_sock_udp
  USEMODULE += xtimer
endif

ifneq (,$(filter gnrc_netdev_default,$(USEMODULE)))
  USEMODULE += netdev_default
  USEMODULE += gnrc_netif
endif

ifneq (,$(filter netdev_ieee802154,$(USEMODULE)))
  USEMODULE += ieee802154
  USEMODULE += random
endif

ifneq (,$(filter gnrc_uhcpc,$(USEMODULE)))
  USEMODULE += uhcpc
  USEMODULE += gnrc_sock_udp
  USEMODULE += fmt
endif

ifneq (,$(filter uhcpc,$(USEMODULE)))
  USEMODULE += posix
endif

ifneq (,$(filter nordic_softdevice_ble,$(USEPKG)))
  USEMODULE += softdevice_handler
  USEMODULE += ble_common
  USEMODULE += ble_6lowpan
  USEMODULE += gnrc_sixlowpan
  USEMODULE += gnrc_sixlowpan_iphc
  USEMODULE += gnrc_ipv6_nib_6ln
  USEMODULE += gnrc_ipv6_default
  # prevent application from being a router
  # TODO: maybe find a nicer solution in future build system update
  _ROUTER_MODULES = gnrc_ipv6_router% gnrc_rpl netstats_rpl auto_init_gnrc_rpl
  ifneq (,$(filter $(_ROUTER_MODULES),$(USEMODULE)))
    $(warning nordic_softdevice_ble: Disabling router modules:\
      $(filter $(_ROUTER_MODULES),$(USEMODULE)))
  endif
  USEMODULE := $(filter-out $(_ROUTER_MODULES),$(USEMODULE))
endif

ifneq (,$(filter gnrc_%,$(filter-out gnrc_netapi gnrc_netreg gnrc_netif% gnrc_pkt%,$(USEMODULE))))
  USEMODULE += gnrc
endif

ifneq (,$(filter gnrc_sock_%,$(USEMODULE)))
  USEMODULE += gnrc_sock
endif

ifneq (,$(filter gnrc_sock_ip,$(USEMODULE)))
  USEMODULE += sock_ip
endif

ifneq (,$(filter gnrc_sock_udp,$(USEMODULE)))
  USEMODULE += gnrc_udp
  USEMODULE += random     # to generate random ports
  USEMODULE += sock_udp
endif

ifneq (,$(filter gnrc_sock,$(USEMODULE)))
  USEMODULE += gnrc_netapi_mbox
  USEMODULE += sock
endif

ifneq (,$(filter gnrc_netapi_mbox,$(USEMODULE)))
  USEMODULE += core_mbox
endif

ifneq (,$(filter netdev_tap,$(USEMODULE)))
  USEMODULE += netif
  USEMODULE += netdev_eth
  USEMODULE += iolist
endif

ifneq (,$(filter gnrc_tftp,$(USEMODULE)))
  USEMODULE += gnrc_udp
  USEMODULE += xtimer
endif

ifneq (,$(filter gnrc_rpl_p2p,$(USEMODULE)))
  USEMODULE += gnrc_rpl
endif

ifneq (,$(filter gnrc_rpl,$(USEMODULE)))
  USEMODULE += gnrc_icmpv6
  USEMODULE += gnrc_ipv6_nib
  USEMODULE += trickle
  USEMODULE += xtimer
  USEMODULE += evtimer
endif

ifneq (,$(filter trickle,$(USEMODULE)))
  USEMODULE += random
  USEMODULE += xtimer
endif

ifneq (,$(filter gnrc_netif,$(USEMODULE)))
  USEMODULE += netif
  USEMODULE += fmt
  ifneq (,$(filter netdev_ieee802154,$(USEMODULE)))
    USEMODULE += gnrc_netif_ieee802154
  endif
  ifneq (,$(filter netdev_eth,$(USEMODULE)))
    USEMODULE += gnrc_netif_ethernet
  endif
endif

ifneq (,$(filter ieee802154 nrfmin,$(USEMODULE)))
  ifneq (,$(filter gnrc_ipv6, $(USEMODULE)))
    USEMODULE += gnrc_sixlowpan
  endif
  ifneq (,$(filter gnrc_ipv6_router, $(USEMODULE)))
    USEMODULE += gnrc_sixlowpan_router
  endif
  ifneq (,$(filter gnrc_ipv6_default, $(USEMODULE)))
    USEMODULE += gnrc_sixlowpan_default
  endif
  ifneq (,$(filter gnrc_ipv6_router_default, $(USEMODULE)))
    USEMODULE += gnrc_sixlowpan_router_default
  endif
  ifneq (,$(filter lwip%, $(USEMODULE)))
    USEMODULE += lwip_sixlowpan
  endif
endif

ifneq (,$(filter gnrc_sixlowpan_default,$(USEMODULE)))
  USEMODULE += gnrc_ipv6_default
  USEMODULE += gnrc_ipv6_nib_6ln
  USEMODULE += gnrc_sixlowpan
  USEMODULE += gnrc_sixlowpan_frag
  USEMODULE += gnrc_sixlowpan_iphc
endif

ifneq (,$(filter gnrc_sixlowpan_router_default,$(USEMODULE)))
  USEMODULE += gnrc_ipv6_router_default
  USEMODULE += gnrc_ipv6_nib_6lr
  USEMODULE += gnrc_sixlowpan_router
  USEMODULE += gnrc_sixlowpan_frag
  USEMODULE += gnrc_sixlowpan_iphc
endif

ifneq (,$(filter gnrc_sixlowpan_border_router_default,$(USEMODULE)))
  USEMODULE += gnrc_ipv6_nib_6lbr
  USEMODULE += gnrc_ipv6_router_default
  USEMODULE += gnrc_sixlowpan_router
  USEMODULE += gnrc_sixlowpan_frag
  USEMODULE += gnrc_sixlowpan_iphc
endif

ifneq (,$(filter gnrc_sixlowpan_router,$(USEMODULE)))
  USEMODULE += gnrc_ipv6_router
endif

ifneq (,$(filter gnrc_sixlowpan_frag,$(USEMODULE)))
  USEMODULE += gnrc_sixlowpan
  USEMODULE += xtimer
endif

ifneq (,$(filter gnrc_sixlowpan_iphc,$(USEMODULE)))
  USEMODULE += gnrc_sixlowpan
  USEMODULE += gnrc_sixlowpan_ctx
  USEMODULE += gnrc_sixlowpan_iphc_nhc
endif

ifneq (,$(filter gnrc_sixlowpan,$(USEMODULE)))
  USEMODULE += gnrc_ipv6
  USEMODULE += sixlowpan
endif

ifneq (,$(filter gnrc_sixlowpan_ctx,$(USEMODULE)))
  USEMODULE += ipv6_addr
  USEMODULE += xtimer
endif

ifneq (,$(filter gnrc_ipv6_default,$(USEMODULE)))
  USEMODULE += gnrc_ipv6
  USEMODULE += gnrc_icmpv6
endif

ifneq (,$(filter gnrc_ipv6_router_default,$(USEMODULE)))
  USEMODULE += gnrc_ipv6_router
  USEMODULE += gnrc_icmpv6
endif

ifneq (,$(filter gnrc_ndp,$(USEMODULE)))
  USEMODULE += gnrc_icmpv6
  USEMODULE += gnrc_netif
endif

ifneq (,$(filter gnrc_icmpv6_echo,$(USEMODULE)))
  USEMODULE += gnrc_icmpv6
endif

ifneq (,$(filter gnrc_icmpv6_error,$(USEMODULE)))
  USEMODULE += gnrc_icmpv6
endif

ifneq (,$(filter gnrc_icmpv6,$(USEMODULE)))
  USEMODULE += inet_csum
  USEMODULE += gnrc_ipv6
  USEMODULE += icmpv6
endif

ifneq (,$(filter gnrc_rpl_srh,$(USEMODULE)))
  USEMODULE += gnrc_ipv6_ext_rh
endif

ifneq (,$(filter gnrc_ipv6_ext_rh,$(USEMODULE)))
  USEMODULE += gnrc_ipv6_ext
endif

ifneq (,$(filter gnrc_ipv6_ext,$(USEMODULE)))
  USEMODULE += gnrc_ipv6
endif

ifneq (,$(filter gnrc_ipv6_whitelist,$(USEMODULE)))
  USEMODULE += ipv6_addr
endif

ifneq (,$(filter gnrc_ipv6_blacklist,$(USEMODULE)))
  USEMODULE += ipv6_addr
endif

ifneq (,$(filter gnrc_ipv6_router,$(USEMODULE)))
  USEMODULE += gnrc_ipv6
  USEMODULE += gnrc_ipv6_nib_router
endif

ifneq (,$(filter gnrc_ipv6,$(USEMODULE)))
  USEMODULE += inet_csum
  USEMODULE += ipv6_addr
  USEMODULE += gnrc_ipv6_hdr
  USEMODULE += gnrc_ipv6_nib
  USEMODULE += gnrc_netif
endif

ifneq (,$(filter gnrc_ipv6_hdr,$(USEMODULE)))
  USEMODULE += ipv6_hdr
  USEMODULE += gnrc_pktbuf
endif

ifneq (,$(filter sixlowpan,$(USEMODULE)))
  USEMODULE += ipv6_hdr
endif

ifneq (,$(filter ipv6_hdr,$(USEMODULE)))
  USEMODULE += inet_csum
  USEMODULE += ipv6_addr
endif

ifneq (,$(filter gnrc_ipv6_nib_6lbr,$(USEMODULE)))
  USEMODULE += gnrc_ipv6_nib_6lr
endif

ifneq (,$(filter gnrc_ipv6_nib_6lr,$(USEMODULE)))
  USEMODULE += gnrc_ipv6_nib_6ln
  USEMODULE += gnrc_ipv6_nib_router
endif

ifneq (,$(filter gnrc_ipv6_nib_6ln,$(USEMODULE)))
  USEMODULE += gnrc_ipv6_nib
  USEMODULE += gnrc_sixlowpan_nd
endif

ifneq (,$(filter gnrc_ipv6_nib_dns,$(USEMODULE)))
  USEMODULE += gnrc_ipv6_nib
endif

ifneq (,$(filter gnrc_ipv6_nib_router,$(USEMODULE)))
  USEMODULE += gnrc_ipv6_nib
endif

ifneq (,$(filter gnrc_ipv6_nib,$(USEMODULE)))
  USEMODULE += evtimer
  USEMODULE += gnrc_ndp
  USEMODULE += gnrc_netif
  USEMODULE += ipv6_addr
  USEMODULE += random
  ifneq (,$(filter sock_dns,$(USEMODULE)))
    USEMODULE += gnrc_ipv6_nib_dns
  endif
endif

ifneq (,$(filter gnrc_udp,$(USEMODULE)))
  USEMODULE += inet_csum
  USEMODULE += udp
endif

ifneq (,$(filter gnrc_tcp,$(USEMODULE)))
  USEMODULE += inet_csum
  USEMODULE += random
  USEMODULE += tcp
  USEMODULE += xtimer
  USEMODULE += core_mbox
endif

ifneq (,$(filter gnrc_nettest,$(USEMODULE)))
  USEMODULE += gnrc_netapi
  USEMODULE += gnrc_netreg
  USEMODULE += gnrc_netif
  USEMODULE += gnrc_pktbuf
  USEMODULE += xtimer
endif

ifneq (,$(filter gnrc_pktdump,$(USEMODULE)))
  USEMODULE += gnrc_pktbuf
  USEMODULE += od
endif

ifneq (,$(filter od,$(USEMODULE)))
  USEMODULE += fmt
endif

ifneq (,$(filter od_string,$(USEMODULE)))
  USEMODULE += od
endif

ifneq (,$(filter newlib_gnu_source,$(USEMODULE)))
  USEMODULE += newlib
endif

ifneq (,$(filter newlib_nano,$(USEMODULE)))
  USEMODULE += newlib
endif

ifneq (,$(filter newlib,$(USEMODULE)))
  # allow custom newlib syscalls implementations by adding
  # newlib_syscalls_XXX to USEMODULE
  ifeq (,$(filter newlib_syscalls_%,$(USEMODULE)))
    USEMODULE += newlib_syscalls_default
  endif
  ifeq (,$(filter stdio_rtt,$(USEMODULE)))
    USEMODULE += stdio_uart
  endif
endif

ifneq (,$(filter posix_sockets,$(USEMODULE)))
  USEMODULE += bitfield
  USEMODULE += random
  USEMODULE += vfs
  USEMODULE += posix
  USEMODULE += xtimer
endif

ifneq (,$(filter stdio_rtt,$(USEMODULE)))
  USEMODULE += xtimer
endif

ifneq (,$(filter stdio_uart,$(USEMODULE)))
  USEMODULE += isrpipe
  FEATURES_REQUIRED += periph_uart
endif

ifneq (,$(filter isrpipe,$(USEMODULE)))
  USEMODULE += tsrb
endif

ifneq (,$(filter shell_commands,$(USEMODULE)))
  ifneq (,$(filter fib,$(USEMODULE)))
    USEMODULE += posix
  endif
endif

ifneq (,$(filter posix_semaphore,$(USEMODULE)))
  USEMODULE += sema
  USEMODULE += xtimer
endif

ifneq (,$(filter posix_time,$(USEMODULE)))
  USEMODULE += xtimer
endif

ifneq (,$(filter lwip_sixlowpan,$(USEMODULE)))
  USEMODULE += lwip_ipv6_autoconfig
endif

ifneq (,$(filter lwip_ipv6_autoconfig lwip_ipv6_mld,$(USEMODULE)))
  USEMODULE += lwip_ipv6
endif

ifneq (,$(filter lwip_ipv6,$(USEMODULE)))
  USEMODULE += random
endif

ifneq (,$(filter lwip_udplite,$(USEMODULE)))
  USEMODULE += lwip_udp
endif

ifneq (,$(filter lwip_sock_%,$(USEMODULE)))
  USEMODULE += lwip_sock
endif

ifneq (,$(filter lwip_sock_ip,$(USEMODULE)))
  USEMODULE += lwip_raw
  USEMODULE += sock_ip
endif

ifneq (,$(filter lwip_sock_tcp,$(USEMODULE)))
  USEMODULE += lwip_tcp
  USEMODULE += sock_tcp
endif

ifneq (,$(filter lwip_sock_udp,$(USEMODULE)))
  USEMODULE += lwip_udp
  USEMODULE += sock_udp
endif

ifneq (,$(filter lwip_%,$(USEMODULE)))
  USEPKG += lwip
  USEMODULE += core_mbox
  USEMODULE += lwip_api
  USEMODULE += lwip_contrib
  USEMODULE += lwip_core
  USEMODULE += lwip_netif
  ifeq (,$(filter lwip_ipv4 lwip_ipv6,$(USEMODULE)))
    USEMODULE += lwip_ipv4
  endif
  ifeq (,$(filter lwip_tcp lwip_udp lwip_udplite,$(USEMODULE)))
    USEMODULE += lwip_raw
  endif
  ifneq (,$(filter netdev_eth,$(USEMODULE)))
    USEMODULE += lwip_ethernet
  endif
endif

ifneq (,$(filter lwip_ppp,$(USEMODULE)))
  USEMODULE += lwip_polarssl
endif

ifneq (,$(filter lwip_contrib,$(USEMODULE)))
  USEMODULE += sema
  USEMODULE += xtimer
endif

ifneq (,$(filter sema,$(USEMODULE)))
  USEMODULE += xtimer
endif


ifneq (,$(filter libfixmath-unittests,$(USEMODULE)))
  USEPKG += libfixmath
  USEMODULE += libfixmath
endif

ifneq (,$(filter luid,$(USEMODULE)))
  FEATURES_OPTIONAL += periph_cpuid
endif

ifneq (,$(filter fib,$(USEMODULE)))
  USEMODULE += universal_address
  USEMODULE += xtimer
endif

ifneq (,$(filter oonf_rfc5444,$(USEMODULE)))
  USEMODULE += oonf_common
endif

ifneq (,$(filter oonf_common,$(USEMODULE)))
  USEPKG += oonf_api
  USEMODULE += posix_sockets
endif

# if any log_* is used, also use LOG pseudomodule
ifneq (,$(filter log_%,$(USEMODULE)))
  USEMODULE += log
endif

ifneq (,$(filter cpp11-compat,$(USEMODULE)))
  USEMODULE += xtimer
  USEMODULE += timex
  FEATURES_REQUIRED += cpp
endif

ifneq (,$(filter gnrc,$(USEMODULE)))
  USEMODULE += gnrc_netapi
  USEMODULE += gnrc_netreg
  USEMODULE += gnrc_netif
  USEMODULE += gnrc_netif_hdr
  USEMODULE += gnrc_pktbuf
endif

ifneq (,$(filter gnrc_pktbuf, $(USEMODULE)))
  ifeq (,$(filter gnrc_pktbuf_%, $(USEMODULE)))
    USEMODULE += gnrc_pktbuf_static
  endif
  ifeq (gnrc_pktbuf_cmd,$(filter gnrc_pktbuf_%, $(USEMODULE)))
    USEMODULE += gnrc_pktbuf_static
  endif
  USEMODULE += gnrc_pkt
endif

ifneq (,$(filter gnrc_pktbuf_%, $(USEMODULE)))
  USEMODULE += gnrc_pktbuf # make MODULE_GNRC_PKTBUF macro available for all implementations
endif

ifneq (,$(filter netstats_%, $(USEMODULE)))
  USEMODULE += netstats
endif

ifneq (,$(filter gnrc_lwmac,$(USEMODULE)))
  USEMODULE += gnrc_netif
  USEMODULE += gnrc_mac
  FEATURES_REQUIRED += periph_rtt
endif

ifneq (,$(filter pthread,$(USEMODULE)))
  USEMODULE += xtimer
  USEMODULE += timex
endif

ifneq (,$(filter schedstatistics,$(USEMODULE)))
  USEMODULE += xtimer
endif

ifneq (,$(filter arduino,$(USEMODULE)))
  FEATURES_REQUIRED += arduino
  USEMODULE += xtimer
endif

ifneq (,$(filter xtimer,$(USEMODULE)))
  FEATURES_REQUIRED += periph_timer
  USEMODULE += div
endif

ifneq (,$(filter saul,$(USEMODULE)))
  USEMODULE += phydat
endif

ifneq (,$(filter saul_reg,$(USEMODULE)))
  USEMODULE += saul
endif

ifneq (,$(filter saul_default,$(USEMODULE)))
  USEMODULE += saul
  USEMODULE += saul_reg
  USEMODULE += auto_init_saul
endif

ifneq (,$(filter saul_adc,$(USEMODULE)))
  FEATURES_REQUIRED += periph_adc
endif

ifneq (,$(filter saul_gpio,$(USEMODULE)))
  FEATURES_REQUIRED += periph_gpio
endif

ifneq (,$(filter saul,$(USEMODULE)))
  USEMODULE += phydat
endif

ifneq (,$(filter phydat,$(USEMODULE)))
  USEMODULE += fmt
endif

ifneq (,$(filter evtimer,$(USEMODULE)))
  USEMODULE += xtimer
endif

ifneq (,$(filter can_linux,$(USEMODULE)))
  LINKFLAGS += -lsocketcan
endif

ifneq (,$(filter can,$(USEMODULE)))
  USEMODULE += can_raw
  USEMODULE += auto_init_can
  ifneq (,$(filter can_mbox,$(USEMODULE)))
    USEMODULE += core_mbox
  endif
  USEMODULE += gnrc_pktbuf_static
endif

ifneq (,$(filter can_isotp,$(USEMODULE)))
  USEMODULE += xtimer
endif

ifneq (,$(filter conn_can,$(USEMODULE)))
  USEMODULE += can
  USEMODULE += can_mbox
  USEMODULE += xtimer
endif

ifneq (,$(filter puf_sram,$(USEMODULE)))
  USEMODULE += hashes
  USEMODULE += random
  FEATURES_REQUIRED += puf_sram
endif

ifneq (,$(filter random,$(USEMODULE)))
  USEMODULE += prng
  # select default prng
  ifeq (,$(filter prng_%,$(USEMODULE)))
    USEMODULE += prng_tinymt32
  endif

  ifneq (,$(filter prng_fortuna,$(USEMODULE)))
    USEMODULE += fortuna
    USEMODULE += hashes
    USEMODULE += crypto
    USEMODULE += xtimer
  endif

  ifneq (,$(filter prng_tinymt32,$(USEMODULE)))
    USEMODULE += tinymt32
  endif

  ifneq (,$(filter prng_sha1prng,$(USEMODULE)))
    USEMODULE += hashes
  endif

  USEMODULE += luid
endif

ifneq (,$(filter asymcute,$(USEMODULE)))
  USEMODULE += sock_udp
  USEMODULE += sock_util
  USEMODULE += random
  USEMODULE += event_timeout
  USEMODULE += event_callback
endif

ifneq (,$(filter emcute,$(USEMODULE)))
  USEMODULE += core_thread_flags
  USEMODULE += sock_udp
  USEMODULE += xtimer
endif

ifneq (,$(filter constfs,$(USEMODULE)))
  USEMODULE += vfs
endif

ifneq (,$(filter devfs,$(USEMODULE)))
  USEMODULE += vfs
endif

ifneq (,$(filter vfs,$(USEMODULE)))
  ifeq (native, $(BOARD))
    USEMODULE += native_vfs
  endif
endif

ifneq (,$(filter sock_dns,$(USEMODULE)))
  USEMODULE += sock_util
endif

ifneq (,$(filter sock_util,$(USEMODULE)))
  USEMODULE += posix
  USEMODULE += fmt
  USEMODULE += sock_udp
endif

ifneq (,$(filter event_%,$(USEMODULE)))
  USEMODULE += event
endif

ifneq (,$(filter event_timeout,$(USEMODULE)))
  USEMODULE += xtimer
endif

ifneq (,$(filter event,$(USEMODULE)))
  USEMODULE += core_thread_flags
endif

ifneq (,$(filter spiffs,$(USEMODULE)))
  USEPKG += spiffs
  USEMODULE += vfs
  USEMODULE += spiffs_fs
  USEMODULE += mtd
endif
ifneq (,$(filter littlefs,$(USEMODULE)))
  USEPKG += littlefs
  USEMODULE += vfs
  USEMODULE += littlefs_fs
  USEMODULE += mtd
endif

ifneq (,$(filter l2filter_%,$(USEMODULE)))
  USEMODULE += l2filter
endif

ifneq (,$(filter gcoap,$(USEMODULE)))
  USEMODULE += nanocoap
  USEMODULE += gnrc_sock_udp
  USEMODULE += sock_util
endif

ifneq (,$(filter luid,$(USEMODULE)))
  FEATURES_OPTIONAL += periph_cpuid
endif

ifneq (,$(filter nanocoap_%,$(USEMODULE)))
  USEMODULE += nanocoap
endif

ifneq (,$(filter fatfs_vfs,$(USEMODULE)))
  USEPKG += fatfs
  USEMODULE += vfs
endif

ifneq (,$(filter benchmark,$(USEMODULE)))
  USEMODULE += xtimer
endif

ifneq (,$(filter skald_%,$(USEMODULE)))
  USEMODULE += skald
endif

ifneq (,$(filter skald,$(USEMODULE)))
  FEATURES_REQUIRED += radio_ble
  USEMODULE += xtimer
  USEMODULE += random
endif

ifneq (,$(filter cord_epsim_standalone,$(USEMODULE)))
  USEMODULE += cord_epsim
  USEMODULE += xtimer
endif

ifneq (,$(filter cord_epsim,$(USEMODULE)))
  USEMODULE += cord_common
  USEMODULE += gcoap
endif

ifneq (,$(filter cord_ep_standalone,$(USEMODULE)))
  USEMODULE += cord_ep
  USEMODULE += xtimer
endif

ifneq (,$(filter cord_ep,$(USEMODULE)))
  USEMODULE += cord_common
  USEMODULE += core_thread_flags
  USEMODULE += gcoap
  ifneq (,$(filter shell_commands,$(USEMODULE)))
    USEMODULE += sock_util
  endif
endif

ifneq (,$(filter cord_common,$(USEMODULE)))
  USEMODULE += fmt
  USEMODULE += luid
endif

ifneq (,$(filter tlsf-malloc,$(USEMODULE)))
  USEPKG += tlsf
endif

ifneq (,$(filter uuid,$(USEMODULE)))
  USEMODULE += hashes
  USEMODULE += random
  USEMODULE += fmt
endif

ifneq (,$(filter riotboot_hdr, $(USEMODULE)))
  USEMODULE += checksum
  USEMODULE += riotboot
endif

# Enable periph_gpio when periph_gpio_irq is enabled
ifneq (,$(filter periph_gpio_irq,$(USEMODULE)))
  FEATURES_REQUIRED += periph_gpio
endif

ifneq (,$(filter riotboot_slot, $(USEMODULE)))
  USEMODULE += riotboot_hdr
endif

# always select gpio (until explicit dependencies are sorted out)
FEATURES_OPTIONAL += periph_gpio

# always select power management if available
FEATURES_OPTIONAL += periph_pm

# include package dependencies
-include $(USEPKG:%=$(RIOTPKG)/%/Makefile.dep)

# remove required features from optional features
FEATURES_OPTIONAL := $(filter-out $(FEATURES_REQUIRED),$(FEATURES_OPTIONAL))

# add all optional but provided features to the list of used features
FEATURES_USED := $(sort $(FEATURES_REQUIRED) $(filter $(FEATURES_OPTIONAL),$(FEATURES_PROVIDED)))

# all periph features correspond to a periph submodule
USEMODULE += $(filter periph_%,$(FEATURES_USED))

# recursively catch transitive dependencies
USEMODULE := $(sort $(USEMODULE))
USEPKG := $(sort $(USEPKG))
ifneq ($(OLD_USEMODULE) $(OLD_USEPKG),$(USEMODULE) $(USEPKG))
  include $(RIOTBASE)/Makefile.dep
endif

ifneq (,$(filter ecc_%,$(USEMODULE)))
  USEMODULE += ecc
endif