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Makefile.dep
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#
OLD_USEMODULE := $(sort $(USEMODULE))
OLD_USEPKG := $(sort $(USEPKG))
# include board dependencies
-include $(RIOTBOARD)/$(BOARD)/Makefile.dep
# pull dependencies from sys and drivers
include $(RIOTBASE)/sys/Makefile.dep
include $(RIOTBASE)/drivers/Makefile.dep
ifneq (,$(filter cbor_ctime,$(USEMODULE)))
ifneq (,$(filter newlib,$(USEMODULE)))
USEMODULE += newlib_gnu_source
endif
endif
ifneq (,$(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,$(USEMODULE)))
USEMODULE += ieee802154
endif
ifneq (,$(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,$(USEMODULE)))
USEMODULE += netif
endif
ifneq (,$(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,$(USEMODULE)))
USEMODULE += ipv6_ext_rh
endif
ifneq (,$(filter ipv6_ext_rh,$(USEMODULE)))
USEMODULE += ipv6_ext
endif
ifneq (,$(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 rtt_stdio,$(USEMODULE)))
USEMODULE += uart_stdio
endif
endif
ifneq (,$(filter posix_sockets,$(USEMODULE)))
USEMODULE += bitfield
USEMODULE += random
USEMODULE += vfs
USEMODULE += posix
USEMODULE += xtimer
endif
ifneq (,$(filter rtt_stdio,$(USEMODULE)))
USEMODULE += xtimer
endif
ifneq (,$(filter uart_stdio,$(USEMODULE)))
USEMODULE += isrpipe
FEATURES_REQUIRED += periph_uart
endif
ifneq (,$(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_%,$(USEMODULE)))
USEMODULE += lwip
endif
ifneq (,$(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,$(USEMODULE)))
USEMODULE += lwip_raw
endif
endif
ifneq (,$(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 openthread_contrib,$(USEMODULE)))
USEMODULE += openthread_contrib_netdev
FEATURES_REQUIRED += cpp
endif
ifneq (,$(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,$(USEMODULE)))
USEMODULE += nanocoap
USEMODULE += gnrc_sock_udp
endif
ifneq (,$(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 rdcli_simple_standalone,$(USEMODULE)))
USEMODULE += rdcli_simple
USEMODULE += xtimer
endif
ifneq (,$(filter rdcli_simple,$(USEMODULE)))
USEMODULE += rdcli_common
USEMODULE += fmt
endif
ifneq (,$(filter rdcli_common,$(USEMODULE)))
USEMODULE += fmt
USEMODULE += gcoap
USEMODULE += luid
endif
ifneq (,$(filter tlsf-malloc,$(USEMODULE)))
USEPKG += tlsf
endif
ifneq (,$(filter uuid,$(USEMODULE)))
USEMODULE += hashes
USEMODULE += random
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