MATCH_MAKE_VERSION = 4.%

MAKEFLAGS += --no-builtin-rules

ifeq (,$(filter $(MATCH_MAKE_VERSION),$(MAKE_VERSION)))
  $(error GNU Make $(MAKE_VERSION) is not supported by RIOT since release \
      2020.01. Please upgrade your system to use GNU Make \
      $(MATCH_MAKE_VERSION) or later.)
endif

#
# enable second expansion of prerequisites.
#
# Doing that here enables it globally for all applications.
#
# See https://www.gnu.org/software/make/manual/html_node/Secondary-Expansion.html
# for what it can be used for.
.SECONDEXPANSION:

# Will evaluate to the absolute path of the Makefile it's evaluated in.¹
#
# This variable MUST be immediately evaluated (tmp_var := $(LAST_MAKEFILEDIR))
# unless it is used directly.
#
# [1] Note that this will in fact return the path of the last Makefile that
# was included, so it must be evaluated before any subsequent includes.
LAST_MAKEFILEDIR = $(abspath $(dir $(lastword $(MAKEFILE_LIST))))

# 'Makefile.include' directory, must be evaluated before other 'include'
_riotbase := $(LAST_MAKEFILEDIR)

# include RIOT_MAKEFILES_GLOBAL_PRE configuration files
# allows setting user specific system wide configuration parsed before the body
# of $(RIOTBASE)/Makefile.include
include $(RIOT_MAKEFILES_GLOBAL_PRE)

# Globally set default goal to `all`
.DEFAULT_GOAL := all

# include Makefile.local if it exists
-include Makefile.local

# set undefined variables
RIOTBASE                        ?= $(_riotbase)
RIOTCPU                         ?= $(RIOTBASE)/cpu
# Deprecated to set RIOTBOARD, use EXTERNAL_BOARD_DIRS
RIOTBOARD                       ?= $(RIOTBASE)/boards
EXTERNAL_BOARD_DIRS             ?=
RIOTMAKE                        ?= $(RIOTBASE)/makefiles
RIOTKCONFIG                     ?= $(RIOTBASE)/kconfigs
RIOTPKG                         ?= $(RIOTBASE)/pkg
EXTERNAL_PKG_DIRS               ?=
RIOTTOOLS                       ?= $(RIOTBASE)/dist/tools
RIOTPROJECT                     ?= $(shell git rev-parse --show-toplevel 2>/dev/null || pwd)
BUILD_DIR                       ?= $(RIOTBASE)/build
APPDIR                          ?= $(CURDIR)
BINDIRBASE                      ?= $(APPDIR)/bin
BINDIR                          ?= $(BINDIRBASE)/$(BOARD)
PKGDIRBASE                      ?= $(BUILD_DIR)/pkg
DLCACHE                         ?= $(RIOTTOOLS)/dlcache/dlcache.sh
DLCACHE_DIR                     ?= $(RIOTBASE)/.dlcache
RIOT_VERSION_DUMMY_CODE         ?= RIOT_VERSION_NUM\(2042,5,23,0\)

# include CI info such as BOARD_INSUFFICIENT_MEMORY, if existing
-include Makefile.ci

__DIRECTORY_VARIABLES := \
  RIOTBASE \
  RIOTCPU \
  RIOTMAKE \
  RIOTPKG \
  RIOTTOOLS \
  RIOTPROJECT \
  APPDIR \
  BUILD_DIR \
  BINDIRBASE \
  BINDIR \
  PKGDIRBASE \
  DLCACHE_DIR \
  #

# In GNU make command line is supposed to override the value set in makefile
# These variables can be overridden even when set from command line
__OVERRIDE_DIRECTORY_VARIABLES := $(__DIRECTORY_VARIABLES)
# Use absolute paths in recursive "make" even if overridden on command line.
MAKEOVERRIDES += $(foreach v,$(__OVERRIDE_DIRECTORY_VARIABLES),$(v)=$($(v)))

# Setting EXTERNAL_BOARD_DIRS and EXTERNAL_MODULE_DIRS as command line argument
# is too messy to handle: Even when every path in EXTERNAL_BOARD_DIRS is turned
# into an absolute path using override, sub-makes will still get the original
# value. Using MAKEOVERRIDES has issues with spaces in the values, which are
# used as separator in EXTERNAL_BOARD_DIRS. So we just enforce setting the value
# either in a Makefile, or as environment variable.
ifeq ($(INSIDE_DOCKER),0)
  # In Docker absolute paths are always given, so only fail when not in docker
  ifeq ($(origin EXTERNAL_BOARD_DIRS),command line)
    $(error EXTERNAL_BOARD_DIRS must be passed as environment variable, and not as command line argument)
  endif
  ifeq ($(origin EXTERNAL_MODULE_DIRS),command line)
    $(error EXTERNAL_MODULE_DIRS must be passed as environment variable, and not as command line argument)
  endif
  ifeq ($(origin EXTERNAL_PKG_DIRS),command line)
    $(error EXTERNAL_PKG_DIRS must be passed as environment variable, and not as command line argument)
  endif
endif

# Deprecation of configuring 'RIOTBOARD'
ifneq ($(abspath $(RIOTBASE)/boards),$(abspath $(RIOTBOARD)))
  $(warning overriding RIOTBOARD for external boards is deprecated, use EXTERNAL_BOARD_DIRS instead)
  override RIOTBOARD      := $(abspath $(RIOTBOARD))
  __DIRECTORY_VARIABLES += RIOTBOARD
endif

# Only warn users, not the CI.
ifneq ($(RIOT_CI_BUILD),1)
  # Do not warn when set from sub-make
  ifeq ($(MAKELEVEL),0)
    ifneq (,$(BOARDSDIR))
      $(warning Using BOARDSDIR is deprecated use EXTERNAL_BOARD_DIRS instead)
    endif
  endif
endif

# Needed for backward compatibility:
ifneq (,$(BOARDSDIR))
  EXTERNAL_BOARD_DIRS += $(BOARDSDIR)
endif

# Make all paths absolute.
override RIOTBASE               := $(abspath $(RIOTBASE))
override RIOTCPU                := $(abspath $(RIOTCPU))
override RIOTMAKE               := $(abspath $(RIOTMAKE))
override RIOTPKG                := $(abspath $(RIOTPKG))
override RIOTTOOLS              := $(abspath $(RIOTTOOLS))
override RIOTPROJECT            := $(abspath $(RIOTPROJECT))
override APPDIR                 := $(abspath $(APPDIR))
override BUILD_DIR              := $(abspath $(BUILD_DIR))
override BINDIRBASE             := $(abspath $(BINDIRBASE))
override BINDIR                 := $(abspath $(BINDIR))
override PKGDIRBASE             := $(abspath $(PKGDIRBASE))
override DLCACHE_DIR            := $(abspath $(DLCACHE_DIR))
EXTERNAL_BOARD_DIRS             := $(foreach dir,\
                                             $(EXTERNAL_BOARD_DIRS),\
                                             $(abspath $(dir)))
EXTERNAL_MODULE_DIRS            := $(foreach dir,\
                                             $(EXTERNAL_MODULE_DIRS),\
                                             $(abspath $(dir)))
EXTERNAL_PKG_DIRS               := $(foreach dir,\
                                             $(EXTERNAL_PKG_DIRS),\
                                             $(abspath $(dir)))

# Ensure that all directories are set and don't contain spaces.
ifneq (, $(filter-out 1, $(foreach v,$(__DIRECTORY_VARIABLES),$(words $($(v))))))
  $(info Aborting compilation for your safety.)
  $(info Related variables = $(__DIRECTORY_VARIABLES))
  $(error Make sure no path override is empty or contains spaces!)
endif

# Path to the current directory relative to RIOTPROJECT
# trailing '/' is important when RIOTPROJECT == CURDIR
BUILDRELPATH ?= $(patsubst $(RIOTPROJECT)/%,%,$(CURDIR)/)

# Set CLEAN to "clean" if that target was requested.
# Allows recipes to be run after cleaning, without triggering it implicitly:
#
# all: | $(CLEAN)
#
CLEAN = $(filter clean, $(MAKECMDGOALS))

# include makefiles utils tools
include $(RIOTMAKE)/utils/variables.mk
include $(RIOTMAKE)/utils/strings.mk

# include nimble makefile tools
include $(RIOTMAKE)/pkg/nimble.adv.mk

# UNAME is always needed so use simple variable expansion so only evaluated once
UNAME := $(shell uname -m -s)
OS = $(word 1, $(UNAME))
OS_ARCH = $(word 2, $(UNAME))

# set python path, e.g. for tests
PYTHONPATH := $(RIOTBASE)/dist/pythonlibs/:$(PYTHONPATH)

# Basic utilities included before anything else
include $(RIOTMAKE)/utils/checks.mk

# Include Docker settings near the top because we need to build the environment
# command line before some of the variable origins are overwritten below when
# using abspath, strip etc.
include $(RIOTMAKE)/docker.inc.mk

# include color echo macros
include $(RIOTMAKE)/utils/ansi.mk
include $(RIOTMAKE)/color.inc.mk

# include concurrency helpers
include $(RIOTMAKE)/info-nproc.inc.mk

# List of boards variables
include $(RIOTMAKE)/boards.inc.mk

# Debug targets for build system migration
include $(RIOTMAKE)/dependencies_debug.inc.mk

# Use TOOLCHAIN environment variable to select the toolchain to use.
ifneq (,$(filter native native64,$(BOARD)))
  ifeq ($(OS),Darwin)
    $(shell $(COLOR_ECHO) "$(COLOR_RED)"Buildin on macOS is not supported."\
                          "We recommend vagrant for building:$(COLOR_RESET)"\
                          "https://github.com/RIOT-OS/RIOT/blob/master/dist/tools/vagrant/README.md 1>&2)
  endif
endif
# Use override so that we can redefine a variable set on the command line (as
# opposed to one set in the environment)
ifeq (clang,$(TOOLCHAIN))
  # TOOLCHAIN = clang is an alias for TOOLCHAIN = llvm
  override TOOLCHAIN := llvm
endif
ifeq (gcc,$(TOOLCHAIN))
  # TOOLCHAIN = gcc is an alias for TOOLCHAIN = gnu
  override TOOLCHAIN := gnu
endif
ifeq (,$(TOOLCHAIN))
  override TOOLCHAIN := gnu
endif

include $(RIOTMAKE)/cargo-settings.inc.mk

GLOBAL_GOALS += buildtest \
                buildtest-indocker \
                info-boards-features-blacklisted \
                info-boards-features-conflicting \
                info-boards-features-missing \
                info-boards-supported \
                info-buildsizes info-buildsizes-diff \
                generate-Makefile.ci \
                #

ifneq (, $(filter $(GLOBAL_GOALS), $(MAKECMDGOALS)))
  include $(RIOTMAKE)/info-global.inc.mk
  include $(RIOTMAKE)/buildtests.inc.mk
else

all: link

# Folders to search: First the external boards, than the official
BOARDSDIRS := $(EXTERNAL_BOARD_DIRS) $(RIOTBOARD)

# Take the first folder in $(BOARDSDIRS) that contains a folder named $(BOARD)
BOARDDIR := $(word 1,$(foreach dir,$(BOARDSDIRS),$(wildcard $(dir)/$(BOARD)/.)))
# Sanitize folder
BOARDDIR := $(abspath $(BOARDDIR))

# Also provide BOARDSDIR for compatibility and for accessing common folders
# (e.g. include $(BOARDSDIR)/common/external_common/Makefile.dep)
BOARDSDIR := $(dir $(BOARDDIR))

ifeq (,$(BOARDDIR))
  $(info Folders searched for the board: $(BOARDSDIRS))
  $(error The specified board $(BOARD) does not exist.)
endif

include $(RIOTMAKE)/info.inc.mk

# Static code analysis tools provided by LLVM
include $(RIOTMAKE)/scan-build.inc.mk

export RIOTBUILD_CONFIG_HEADER_C = $(BINDIR)/riotbuild/riotbuild.h

ifeq ($(OS),Darwin)
  OPEN   := open
else
  OPEN   := xdg-open
endif

QUIET ?= 1
QUIETER ?= 0

ifeq ($(QUIET),1)
  Q=@
  MAKEFLAGS += --no-print-directory
else
  Q=
endif

# Set this to 1 to enable pretty-printing the assert location in addition
# to the address of the failing assert.
# This saves you to resolve the address manually with addr2line at the cost
# of greater ROM consumption.
VERBOSE_ASSERT ?= 0
ifeq ($(VERBOSE_ASSERT),1)
  CFLAGS += -DDEBUG_ASSERT_VERBOSE
  DEVELHELP := 1
endif

# Set this to 1 to enable code in RIOT that does safety checking
# which is not needed in a production environment but helps in the
# development process:
DEVELHELP ?= 0
ifeq ($(DEVELHELP),1)
  CFLAGS += -DDEVELHELP
endif

# Set this to 1 to enable thread names
THREAD_NAMES ?= 0
ifeq ($(THREAD_NAMES),1)
  CFLAGS += -DCONFIG_THREAD_NAMES
endif

# Override LOG_LEVEL if variable is set and if CFLAGS doesn't already contain
# a LOG_LEVEL config
ifdef LOG_LEVEL
  ifeq (,$(filter -DLOG_LEVEL=%,$(CFLAGS)))
    CFLAGS += -DLOG_LEVEL=$(LOG_LEVEL)
  endif
endif

# Fail on warnings. Can be overridden by `make WERROR=0`.
WERROR ?= 1
ifeq ($(WERROR),1)
  CFLAGS += -Werror
endif

WPEDANTIC ?= 0
ifeq ($(WPEDANTIC),1)
  CFLAGS += -Wpedantic
endif

# Provide a shallow sanity check. You cannot call `make` in a module directory.
export __RIOTBUILD_FLAG := RIOT

BOARD := $(strip $(BOARD))
APPLICATION := $(strip $(APPLICATION))

# provide common external programs for `Makefile.include`s

ifeq (,$(and $(DOWNLOAD_TO_STDOUT),$(DOWNLOAD_TO_FILE)))
  ifeq (,$(WGET))
    ifeq (0,$(shell which wget > /dev/null 2>&1 ; echo $$?))
      WGET = $(call memoized,WGET,$(shell which wget))
    endif
  endif
  ifeq (,$(CURL))
    ifeq (0,$(shell which curl > /dev/null 2>&1 ; echo $$?))
      CURL = $(call memoized,CURL,$(shell which curl))
    endif
  endif
  ifeq (,$(WGET)$(CURL))
    $(warning Neither wget nor curl is installed!)
  endif

  ifeq (,$(DOWNLOAD_TO_STDOUT))
    DOWNLOAD_TO_STDOUT ?= $(if $(CURL),$(CURL) -s,$(WGET) -q -O-)
  endif
  ifeq (,$(DOWNLOAD_TO_FILE))
    DOWNLOAD_TO_FILE ?= $(if $(WGET),$(WGET) -nv -c -O,$(CURL) -s -o)
  endif
endif

ifeq (,$(UNZIP_HERE))
  ifeq (0,$(shell which unzip > /dev/null 2>&1 ; echo $$?))
    UNZIP_HERE = $(call memoized,UNZIP_HERE,$(shell which unzip) -q)
  else
    ifeq (0,$(shell which 7z > /dev/null 2>&1 ; echo $$?))
      UNZIP_HERE = $(call memoized,UNZIP_HERE,$(shell which 7z) x -bd)
    else
      $(warning Neither unzip nor 7z is installed.)
    endif
  endif
endif

# Tool saving stdin to a file only on content update.
# It keeps the file timestamp if it would end up the same.
LAZYSPONGE ?= $(RIOTTOOLS)/lazysponge/lazysponge.py
LAZYSPONGE_FLAGS ?= $(if $(filter 1,$(QUIET)),,--verbose)

ifeq (, $(APPLICATION))
    $(error An application name must be specified as APPLICATION.)
endif

# default toolchain prefix, defaults to target triple followed by a dash, you
# will most likely not need to touch this.
export PREFIX ?= $(if $(TARGET_ARCH),$(TARGET_ARCH)-)

# set default PROGRAMMER value if flashing a board on IoT-LAB
# This must be done before parsing the Makefile.include of the board and cannot
# be done in makefile.iotlab.single.inc.mk which is included after.
ifneq (,$(IOTLAB_NODE))
  PROGRAMMER ?= iotlab
  # iotlab uses ELFFILE by default for flashing boards.
  FLASHFILE ?= $(ELFFILE)
  # Disable IOTLAB_NODE if inside Docker to avoid including the
  # iotlab.single.inc.mk file which is useless there: it's only useful for
  # flashing and this is done outside of Docker.
  ifeq (1,$(INSIDE_DOCKER))
    IOTLAB_NODE :=
  endif
endif

# Add standard include directories
INCLUDES += -I$(RIOTBASE)/core/lib/include
INCLUDES += -I$(RIOTBASE)/core/include
INCLUDES += -I$(RIOTBASE)/drivers/include
INCLUDES += -I$(RIOTBASE)/sys/include

# process provided features
include $(RIOTBASE)/Makefile.features

ifneq ($(RIOT_CI_BUILD),1)
  # Warn about used deprecated boards
  include $(RIOTMAKE)/deprecated_boards.inc.mk
  include $(RIOTMAKE)/deprecated_cpus.inc.mk
endif

# mandatory includes!
include $(RIOTMAKE)/pseudomodules.inc.mk
include $(RIOTMAKE)/defaultmodules_regular.inc.mk

# Include Kconfig functionalities
include $(RIOTMAKE)/kconfig.mk

# always select provided architecture features
FEATURES_REQUIRED += $(filter arch_%,$(FEATURES_PROVIDED))
# always select CPU core features
FEATURES_REQUIRED += $(filter cpu_core_%,$(FEATURES_PROVIDED))

# check if required features are provided and update $(FEATURES_USED)
include $(RIOTMAKE)/features_check.inc.mk

# handle removal of default modules
USEMODULE += $(filter-out $(DISABLE_MODULE), $(DEFAULT_MODULE))

# avoid recursive expansion
USEMODULE := $(sort $(USEMODULE))

# process dependencies
include $(RIOTMAKE)/dependency_resolution.inc.mk

# Include dfu-util configuration when using riotboot_dfu bootloader before
# including the board's Makefile.include which could define dfu-util
# configuration for other DFU bootloaders in use.
include $(RIOTMAKE)/boot/riotboot_dfu-util.mk

# Include Board and CPU configuration
INCLUDES += $(addprefix -I,$(wildcard $(BOARDDIR)/include))
include $(BOARDDIR)/Makefile.include
INCLUDES += -I$(RIOTCPU)/$(CPU)/include
include $(RIOTCPU)/$(CPU)/Makefile.include

# Include common serial logic to define TERMPROG, TERMFLAGS variables based on
# the content of RIOT_TERMINAL
include $(RIOTMAKE)/tools/serial.inc.mk

# Include emulator code when required and if available
ifeq (1,$(EMULATE))
  # Use renode as default emulator
  RIOT_EMULATOR ?= renode
  -include $(RIOTMAKE)/tools/$(RIOT_EMULATOR).inc.mk
  TERMDEPS += $(EMULATORDEPS)
  DEBUGDEPS += $(EMULATORDEPS)
endif

# Include common programmer logic if available
-include $(RIOTMAKE)/tools/$(PROGRAMMER).inc.mk

# Check if programmer is supported by the board, only if PROGRAMMERS_SUPPORTED
# is set and if programmer is not iotlab
ifneq ($(RIOT_CI_BUILD),1)
  ifneq (iotlab,$(PROGRAMMER))
    ifneq (,$(PROGRAMMERS_SUPPORTED))
      ifeq (,$(filter $(PROGRAMMER),$(PROGRAMMERS_SUPPORTED)))
        $(warning '$(PROGRAMMER)' programmer is not supported by this board. \
                Supported programmers: '$(PROGRAMMERS_SUPPORTED)')
      endif
    endif
  endif
endif

# Assume GCC/GNU as supported toolchain if CPU's Makefile.include doesn't
# provide this macro
TOOLCHAINS_SUPPORTED ?= gnu
# Import all toolchain settings
include $(RIOTMAKE)/toolchain/$(TOOLCHAIN).inc.mk

# Other than on native, RWX segments in ROM are not actually RWX, as regular
# store instructions won't write to flash.
ifeq (,$(filter native native64,$(BOARD)))
  LINKER_SUPPORTS_NOWARNRWX ?= $(shell LC_ALL=C $(LINK) $(RIOTTOOLS)/testprogs/minimal_linkable.c -o /dev/null -lc -Wall -Wextra -pedantic -Wl,--no-warn-rwx-segments 2> /dev/null && echo 1 || echo 0)
  ifeq (1,$(LINKER_SUPPORTS_NOWARNRWX))
    LINKFLAGS += -Wl,--no-warn-rwx-segments
  endif
endif

# Append ldscript path after importing CPU and board makefiles to allow
# overriding the core ldscripts
LINKFLAGS += -L$(RIOTBASE)/core/ldscripts

# include undefined behaviour sanitizer (UBSAN) support
include $(RIOTMAKE)/ubsan.inc.mk

# Tell ccache to pass the original file to the compiler, instead of passing the
# preprocessed code. Without this setting, the compilation will fail with
# -Wimplicit-fallthrough warnings even when the fall through case is properly
# commented because the preprocessor has stripped the comments from the code.
# This also fixes some other false warnings when compiling with LLVM/Clang.
# The environment variable only affects builds with ccache (e.g. on CI/Murdock).
# Non cached builds are not affected in any way.
# For more information, see http://petereisentraut.blogspot.com/2011/09/ccache-and-clang-part-2.html
export CCACHE_CPP2=yes

# set some settings useful for continuous integration builds
ifeq ($(RIOT_CI_BUILD),1)
    RIOT_VERSION ?= buildtest
    # set a dummy version number
    RIOT_VERSION_CODE ?= $(RIOT_VERSION_DUMMY_CODE)
    ifneq ($(filter $(BOARD_INSUFFICIENT_MEMORY), $(BOARD)),)
        RIOTNOLINK:=1
    endif
    # be more quiet when building for CI
    QUIETER=1
endif

ifeq ($(QUIETER),1)
  QQ=@
else
  QQ=
endif

# if you want to publish the board into the sources as an uppercase #define
BOARDDEF = $(call uppercase_and_underscore,$(BOARD))
CPUDEF = $(call uppercase_and_underscore,$(CPU))
CFLAGS += -DRIOT_APPLICATION=\"$(APPLICATION)\"
CFLAGS += -DBOARD_$(BOARDDEF)=\"$(BOARD)\" -DRIOT_BOARD=BOARD_$(BOARDDEF)
CFLAGS += -DCPU_$(CPUDEF)=\"$(CPU)\" -DRIOT_CPU=CPU_$(CPUDEF)

# Feature test default CFLAGS and LINKFLAGS for the set compiled.
include $(RIOTMAKE)/cflags.inc.mk

# Include VERSION for releases
-include $(RIOTBASE)/VERSION
-include $(RIOTBASE)/EXTRAVERSION

include $(RIOTMAKE)/git_version.inc.mk
RIOT_VERSION ?= $(or $(GIT_VERSION),'UNKNOWN (builddir: $(RIOTBASE))')
RIOT_EXTRAVERSION ?= 0

# Deprecate using RIOT_VERSION_OVERRIDE but currently keep the behavior
ifneq (,$(RIOT_VERSION_OVERRIDE))
  $(warning 'RIOT_VERSION_OVERRIDE' is deprecated, it can now be set with 'RIOT_VERSION' directly.)
  RIOT_VERSION = $(RIOT_VERSION_OVERRIDE)
endif

# Generate machine readable RIOT VERSION macro
RIOT_VERSION_CODE ?= $(shell echo $(RIOT_VERSION) | \
                      sed -E 's/([0-9]+)\.([0-9]+)\.?([0-9]+)?.*/RIOT_VERSION_NUM\\\(\1,\2,0\3,$(RIOT_EXTRAVERSION)\\\)/' | \
                      grep RIOT_VERSION_NUM || echo "$(RIOT_VERSION_DUMMY_CODE)")

# Set module by prepending APPLICATION name with 'application_'.
# It prevents conflict with application and modules with the same name.
APPLICATION_MODULE ?= application_$(APPLICATION)

# the binaries to link
BASELIBS += $(APPLICATION_MODULE).module
BASELIBS += $(APPDEPS)


# add extra include paths for packages in $(USEMODULE)
USEMODULE_INCLUDES =

include $(RIOTBASE)/sys/Makefile.include

# add default board_init()
DIRS += $(RIOTBASE)/boards/common/init

# include Makefile.includes of each driver modules if they exist
-include $(USEMODULE:%=$(RIOTBASE)/drivers/%/Makefile.include)

# include Makefile.includes for packages in $(PKG_PATHS)
-include $(PKG_PATHS:%=%Makefile.include)

# include external modules configuration
-include $(EXTERNAL_MODULE_PATHS:%=%Makefile.include)

# Deduplicate includes without sorting them
# see https://stackoverflow.com/questions/16144115/makefile-remove-duplicate-words-without-sorting
define uniq
  $(eval seen :=)
  $(foreach _,$1,$(if $(filter $_,$(seen)),,$(eval seen += $_)))
  $(seen)
endef

USEMODULE_INCLUDES_ = $(strip $(call uniq,$(USEMODULE_INCLUDES)))

INCLUDES += $(USEMODULE_INCLUDES_:%=-I%)


# include bindist target
include $(RIOTMAKE)/bindist.inc.mk

# Add all USEMODULE modules to CFLAGS and populate BASELIBS
include $(RIOTMAKE)/modules.inc.mk


.PHONY: all link clean flash flash-only termdeps term doc debug debug-server reset objdump help info-modules
.PHONY: print-size elffile lstfile binfile hexfile flashfile cosy
.PHONY: ..in-docker-container

# Targets that depend on FORCE will always be rebuilt. Contrary to a .PHONY
# target, they are considered real files and the modification timestamp is taken
# into account.
#
# FORCE is useful for goals that may keep outputs unchanged (for example, if it
# depends on environment or configuration variables). If the goal were .PHONY, it
# would trigger a rebuild of all its dependents regardless of file modification.
#
# As general rule, use .PHONY only for non-file targets.
#
# For more information, see:
# https://www.gnu.org/software/make/manual/html_node/Phony-Targets.html
# https://www.gnu.org/software/make/manual/html_node/Force-Targets.html
.PHONY: FORCE

ifneq (,$(IOTLAB_NODE))
  # iot-lab archi mapping
  include $(RIOTBASE)/dist/testbed-support/makefile.iotlab.archi.inc.mk
  ifneq (,$(IOTLAB_ARCHI))
    # iot-lab serial and flasher
    include $(RIOTBASE)/dist/testbed-support/makefile.iotlab.single.inc.mk
  else
    $(info $(COLOR_YELLOW)Board "$(BOARD)" incompatible with IOTLAB_NODE variable$(COLOR_RESET))
  endif
endif

ELFFILE ?= $(BINDIR)/$(APPLICATION).elf
HEXFILE ?= $(ELFFILE:.elf=.hex)
BINFILE ?= $(ELFFILE:.elf=.bin)
HASHFILE ?= $(BINFILE)
MAPFILE ?= $(ELFFILE:.elf=.map)
LSTFILE ?= $(ELFFILE:.elf=.lst)

ifneq (,$(filter suit,$(USEMODULE)))
  include $(RIOTMAKE)/suit.base.inc.mk
endif

# include bootloaders support. It should be included early to allow using
# variables defined in `riotboot.mk` for `FLASHFILE` before it is evaluated.
# It should be included after defining 'BINFILE' for 'riotboot.bin' handling.
include $(RIOTMAKE)/boot/riotboot.mk

# include suit targets
ifneq (,$(filter suit,$(USEMODULE)))
  include $(RIOTMAKE)/suit.inc.mk
endif

# elf file used for the debugger, must include bootloader offset
DEBUG_ELFFILE ?= $(ELFFILE)

# Targets to get given file
elffile: $(ELFFILE)
hexfile: $(HEXFILE)
binfile: $(BINFILE)
lstfile: $(LSTFILE)
# FLASHFILE is the file used by the flasher
# Usually set to $(ELFFILE), $(HEXFILE) or $(BINFILE) in the board/flasher
# or application specific files
flashfile: $(FLASHFILE)

ifeq (,$(FLASHFILE))
  $(error FLASHFILE is not defined for this board: $(BOARD))
endif

BUILD_FILES += $(ELFFILE) $(BINFILE) $(FLASHFILE) $(HASHFILE)

# variables used to compile and link c++
ifneq (,$(filter cpp,$(USEMODULE)))
  CPPMIX ?= 1
endif

# We assume $(LINK) to be gcc-like. Use `LINKFLAGPREFIX :=` for ld-like linker options.
LINKFLAGPREFIX ?= -Wl,

# Also build external modules
DIRS += $(EXTERNAL_MODULE_PATHS)

# Define dependencies required for building (headers, downloading source files,)
BUILDDEPS += $(RIOTBUILD_CONFIG_HEADER_C)
BUILDDEPS += pkg-prepare
BUILDDEPS += $(APPDEPS)
BUILDDEPS += $(MODULE_LIST_DIR)

# Build dependencies depend on clean (if a make goal), as clean may wipe them.
# Without them depending on clean parallel builds occasionally fail due to
# clean removing dependencies that make previously considered as up to date.
$(BUILDDEPS): $(CLEAN)

# include makefile snippets for packages in $(PKG_PATHS) that modify GENSRC:
-include $(PKG_PATHS:%=%Makefile.gensrc)
# remove duplicates & make accessible to subprocesses
GENSRC := $(sort $(GENSRC))
export GENSRC

# Save value to verify it is not modified later
_BASELIBS_VALUE_BEFORE_USAGE := $(BASELIBS)

# Linker rule
# Only use --start-group when archives are defined
ARCHIVES_GROUP = $(if $(ARCHIVES),$(LINKFLAGPREFIX)--start-group $(ARCHIVES) -lm $(LINKFLAGPREFIX)--end-group, -lm)

$(ELFFILE): FORCE
ifeq ($(BUILDOSXNATIVE),1)
  _LINK = $(if $(CPPMIX),$(LINKXX),$(LINK)) $$(find $(BASELIBS:%.module=$(BINDIR)/%/) -name "*.o" 2> /dev/null | sort) $(ARCHIVES_GROUP) $(LINKFLAGS) $(LINKFLAGPREFIX)-no_pie
else
  _LINK = $(if $(CPPMIX),$(LINKXX),$(LINK)) $$(find $(BASELIBS:%.module=$(BINDIR)/%/) -name "*.o" 2> /dev/null | sort) $(ARCHIVES_GROUP) $(LINKFLAGS) $(LINKFLAGPREFIX)-Map=$(BINDIR)/$(APPLICATION).map
endif # BUILDOSXNATIVE

COMPILE_COMMANDS_PATH ?= $(if $(findstring $(RIOTBASE),$(APPDIR)),$(RIOTBASE)/compile_commands.json, $(APPDIR)/compile_commands.json)
COMPILE_COMMANDS_FLAGS ?= --clangd
.PHONY: compile-commands
compile-commands: $(COMPILE_COMMANDS_PATH)
%/compile_commands.json: $(BUILDDEPS)
	$(Q)DIRS="$(DIRS)" APPLICATION_BLOBS="$(BLOBS)" \
    APPLICATION_SRC="$(SRC)" APPLICATION_SRCXX="$(SRCXX)" APPLICATION_ASMSRC="$(ASMSRC)" APPLICATION_ASSMSRC="$(ASSMSRC)" \
	  "$(MAKE)" -C $(APPDIR) -f $(RIOTMAKE)/application.inc.mk compile-commands
	$(Q)$(RIOTTOOLS)/compile_commands/compile_commands.py $(COMPILE_COMMANDS_FLAGS) $(BINDIR) \
	  > $@

ifeq ($(BUILD_IN_DOCKER),1)
link: ..in-docker-container
else
ifeq (,$(RIOTNOLINK))
link: ..compiler-check ..build-message $(BUILD_FILES) print-size ..module-check
else
link: ..compiler-check ..build-message $(BASELIBS) $(ARCHIVES) ..module-check
endif # RIOTNOLINK

$(ELFFILE): $(BASELIBS) $(ARCHIVES) $(LD_SCRIPTS)
	$(Q)$(_LINK) -o $@

.PHONY: $(APPLICATION_MODULE).module

..module-check: $(BASELIBS)
	@[ -z "$(strip $(NON_GENERATED_MODULES))" ] || \
	($(COLOR_ECHO) "$(COLOR_RED)Error - using unknown modules: $(COLOR_RESET)$(NON_GENERATED_MODULES)" && false)

$(APPLICATION_MODULE).module: pkg-build $(BUILDDEPS)
	$(Q)DIRS="$(DIRS)" APPLICATION_BLOBS="$(BLOBS)" \
    APPLICATION_SRC="$(SRC)" APPLICATION_SRCXX="$(SRCXX)" APPLICATION_ASMSRC="$(ASMSRC)" APPLICATION_ASSMSRC="$(ASSMSRC)" \
	  "$(MAKE)" -C $(APPDIR) -f $(RIOTMAKE)/application.inc.mk
$(APPLICATION_MODULE).module: FORCE

# Other modules are built by application.inc.mk and packages building
_SUBMAKE_LIBS = $(filter-out $(APPLICATION_MODULE).module $(APPDEPS), $(BASELIBS) $(ARCHIVES))
$(_SUBMAKE_LIBS): $(APPLICATION_MODULE).module pkg-build $(GENSRC)

# 'print-size' triggers a rebuild. Use 'info-buildsize' if you do not need to rebuild.
print-size: $(ELFFILE)
	$(Q)$(SIZE) $(SIZEFLAGS) $<

%.hex: %.elf
	$(Q)$(OBJCOPY) $(OFLAGS) -Oihex $< $@

%.bin: %.elf
	$(Q)$(OBJCOPY) $(OFLAGS) -Obinary $< $@

%.lst: %.elf
	$(Q)$(OBJDUMP) --disassemble-all --file-headers --file-offsets \
  --section-headers --line-numbers --private-headers --source --wide \
  --disassemble-zeroes $< > $@

endif # BUILD_IN_DOCKER

# Check given command is available in the path
#   check_cmd 'command' 'description'
define check_cmd
	@command -v $1 >/dev/null 2>&1 || \
	  { $(COLOR_ECHO) \
	    '$(COLOR_RED)$2 $1 is required but not found in PATH.  Aborting.$(COLOR_RESET)'; \
	    exit 1;}
endef

# Check if setsid command is available on the system for debug target
# This is not the case on MacOSX, so it must be built on the fly
ifeq ($(OS),Darwin)
  ifneq (,$(filter debug, $(MAKECMDGOALS)))
    ifneq (0,$(shell command -v setsid > /dev/null 2>&1 ; echo $$?))
      SETSID = $(RIOTTOOLS)/setsid/setsid
      $(call target-export-variables,debug,$(SETSID))
      DEBUGDEPS += $(SETSID)
    endif
  endif
endif

..compiler-check:
	$(call check_cmd,$(CC),Compiler)

..build-message: $(if $(SHOULD_RUN_KCONFIG), check-kconfig-errors)
	@$(COLOR_ECHO) '$(COLOR_GREEN)Building application "$(APPLICATION)" for "$(BOARD)" with CPU "$(CPU)".$(COLOR_RESET)'
	@$(COLOR_ECHO)

# The `clean` needs to be serialized before everything else.
all $(BASELIBS) $(ARCHIVES) $(BUILDDEPS) $(GENSRC) ..in-docker-container: | $(CLEAN)

.PHONY: pkg-prepare pkg-build
pkg-prepare:
	-@$(foreach dir,$(PKG_PATHS),"$(MAKE)" -C $(dir) prepare $(NEWLINE))

$(GENSRC): pkg-prepare

pkg-build: $(BUILDDEPS) | $(GENSRC)
	$(foreach dir,$(PKG_PATHS),$(QQ)"$(MAKE)" -C $(dir) $(NEWLINE))

clean:
ifndef MAKE_RESTARTS
	-@$(foreach dir,$(PKG_PATHS),"$(MAKE)" -C $(dir) clean $(NEWLINE))
	-@rm -rf $(BINDIR)
	-@rm -rf $(SCANBUILD_OUTPUTDIR)
endif

# Remove intermediates, but keep the .elf, .hex and .map etc.
clean-intermediates:
	-@$(foreach dir,$(PKG_PATHS),"$(MAKE)" -C $(dir) distclean $(NEWLINE))
	-@rm -rf $(BINDIR)/*.a $(BINDIR)/*/

clean-pkg:
	-@$(foreach dir,$(PKG_PATHS),"$(MAKE)" -C $(dir) distclean $(NEWLINE))

distclean:
	-@$(foreach dir,$(PKG_PATHS),"$(MAKE)" -C $(dir) distclean $(NEWLINE))
	-@rm -rf $(BINDIRBASE)

# Include PROGRAMMER_FLASH/PROGRAMMER_RESET variables
include $(RIOTMAKE)/tools/programmer.inc.mk

# Define flash-recipe with a default value
define default-flash-recipe
  $(call check_cmd,$(FLASHER),Flash program)
  $(PROGRAMMER_FLASH)
endef
flash-recipe ?= $(default-flash-recipe)

# Do not add dependencies to "flash" directly, use FLASHDEPS, as this is shared
# with flash-only too

flash: all $(FLASHDEPS)
	$(flash-recipe)

flash-only: $(FLASHDEPS)
	$(flash-recipe)

preflash: $(BUILD_BEFORE_FLASH)
	$(PREFLASHER_PREFIX)$(PREFLASHER) $(PREFFLAGS)

# graphical memory usage analyzer
COSY_TOOL ?= $(PKGDIRBASE)/cosy/cosy.py
COSY_PORT ?= 12345
cosy: $(ELFFILE) $(COSY_TOOL)
	$(COSY_TOOL) --port $(COSY_PORT) --riot-base $(RIOTBASE) $(APPDIR) $(BOARD) $(ELFFILE) $(MAPFILE)

ifneq (,$(TERMLOG)$(TERMTEE))
  TERMTEE ?= | tee -a $(TERMLOG)
endif
TERMFLASHDEPS ?= $(filter flash flash-only,$(MAKECMDGOALS))
# Add TERMFLASHDEPS to TERMDEPS so it also applies to `test`
TERMDEPS += $(TERMFLASHDEPS)
termdeps: $(TERMDEPS)

term: $(TERMDEPS)
	$(call check_cmd,$(TERMPROG),Terminal program)
	${TERMENV} $(TERMPROG) $(TERMFLAGS) $(TERMTEE)

# Term without the pyterm added logging
# PYTERMFLAGS must be exported for `jlink.sh term-rtt`.
cleanterm: export PYTERMFLAGS += --no-reconnect --noprefix --no-repeat-command-on-empty-line
cleanterm: $(TERMDEPS)
	$(call check_cmd,$(TERMPROG),Terminal program)
	$(TERMPROG) $(TERMFLAGS) $(TERMTEE)

list-ttys:
	$(Q)$(RIOTTOOLS)/usb-serial/ttys.py

doc:
	$(MAKE) -BC $(RIOTBASE) doc

debug: $(DEBUGDEPS)
	$(call check_cmd,$(DEBUGGER),Debug program)
	$(DEBUGGER) $(DEBUGGER_FLAGS)

debug-client:
	$(call check_cmd,$(DEBUGCLIENT),Debug client program)
	$(DEBUGCLIENT) $(DEBUGCLIENT_FLAGS)

debug-server:
	$(call check_cmd,$(DEBUGSERVER),Debug server program)
	$(DEBUGSERVER) $(DEBUGSERVER_FLAGS)

ifeq (1,$(EMULATE))
emulate:
	$(call check_cmd,$(EMULATOR),Emulation program)
	$(EMULATOR) $(EMULATOR_FLAGS)
endif

reset:
	$(call check_cmd,$(RESET),Reset program)
	$(PROGRAMMER_RESET)

# tests related targets and variables
include $(RIOTMAKE)/tests/tests.inc.mk

.PHONY: fuzz
fuzz:
	env FLASHFILE="$(FLASHFILE)" PORT="$(PORT)" TERMFLAGS="$(TERMFLAGS)" \
		"$(RIOTBASE)"/dist/tools/fuzzing/afl.sh $(FLAGS_FOR_AFL)

# Default OBJDUMPFLAGS for platforms which do not specify it:
OBJDUMPFLAGS ?= -S -D -h

objdump:
	$(call check_cmd,$(OBJDUMP),Objdump program)
	$(OBJDUMP) $(OBJDUMPFLAGS) $(ELFFILE) | less

# inlcude clang-tidy
include $(RIOTMAKE)/clang_tidy.inc.mk
# Support Eclipse IDE.
include $(RIOTMAKE)/eclipse.inc.mk

# Export variables used throughout the whole make system:
include $(RIOTMAKE)/vars.inc.mk

# Include build targets for selected tools
include $(RIOTMAKE)/tools/targets.inc.mk

# Checks and defaults for USB Vendor and Product ID
include $(RIOTMAKE)/usb-codes.inc.mk

# Warn if the selected board and drivers don't provide all needed features:
ifneq (, $(filter all flash, $(if $(MAKECMDGOALS), $(MAKECMDGOALS), all)))
  EXPECT_ERRORS :=
  EXPECT_CONFLICT :=

  # Test if there where dependencies against a module in DISABLE_MODULE.
  ifneq (, $(filter $(DISABLE_MODULE), $(USEMODULE)))
    $(shell $(COLOR_ECHO) "$(COLOR_RED)Required modules were disabled using DISABLE_MODULE:$(COLOR_RESET)"\
                          "$(sort $(filter $(DISABLE_MODULE), $(USEMODULE)))" 1>&2)
    USEMODULE := $(filter-out $(DISABLE_MODULE), $(USEMODULE))
    EXPECT_ERRORS := 1
  endif

  # Test if all feature requirements were met by the selected board.
  ifneq (,$(FEATURES_MISSING))
    $(shell $(COLOR_ECHO) "$(COLOR_RED)There are unsatisfied feature requirements:$(COLOR_RESET)"\
                          "$(FEATURES_MISSING)" 1>&2)
    EXPECT_ERRORS := 1
  endif

  # Test if no feature in the requirements used is blacklisted for the selected board.
  ifneq (,$(FEATURES_USED_BLACKLISTED))
    $(shell $(COLOR_ECHO) "$(COLOR_RED)Some feature requirements are blacklisted:$(COLOR_RESET)"\
                          "$(FEATURES_USED_BLACKLISTED)" 1>&2)
    EXPECT_ERRORS := 1
  endif

  # Test if any used feature conflict with another one.
  ifneq (,$(FEATURES_CONFLICTING))
    $(shell $(COLOR_ECHO) "$(COLOR_YELLOW)The following features may conflict:$(COLOR_RESET)"\
                          "$(FEATURES_CONFLICTING)" 1>&2)
    ifneq (, $(FEATURES_CONFLICT_MSG))
        $(shell $(COLOR_ECHO) "$(COLOR_YELLOW)Rationale: $(COLOR_RESET)$(FEATURES_CONFLICT_MSG)" 1>&2)
    endif
    EXPECT_CONFLICT := 1
  endif

  # If there is a whitelist, then test if the board is whitelisted.
  ifneq (, $(BOARD_WHITELIST))
    ifeq (, $(filter $(BOARD_WHITELIST), $(BOARD)))
      $(shell $(COLOR_ECHO) "$(COLOR_RED)The selected BOARD=$(BOARD) is not whitelisted:$(COLOR_RESET) $(BOARD_WHITELIST)" 1>&2)
      EXPECT_ERRORS := 1
    endif
  endif

  # If there is a blacklist, then test if the board is blacklisted.
  ifneq (, $(BOARD_BLACKLIST))
    ifneq (, $(filter $(BOARD_BLACKLIST), $(BOARD)))
      $(shell $(COLOR_ECHO) "$(COLOR_RED)The selected BOARD=$(BOARD) is blacklisted:$(COLOR_RESET) $(BOARD_BLACKLIST)" 1>&2)
      EXPECT_ERRORS := 1
    endif
  endif

  #  test if toolchain is supported.
  ifeq (,$(filter $(TOOLCHAIN),$(TOOLCHAINS_SUPPORTED)))
    $(shell $(COLOR_ECHO) "$(COLOR_RED)The selected TOOLCHAIN=$(TOOLCHAIN) is not supported.$(COLOR_RESET)\nSupported toolchains: $(TOOLCHAINS_SUPPORTED)" 1>&2)
    EXPECT_ERRORS := 1
  endif

  # If there is a blacklist, then test if the board is blacklisted.
  ifneq (,$(TOOLCHAINS_BLACKLIST))
    ifneq (,$(filter $(TOOLCHAIN),$(TOOLCHAINS_BLACKLIST)))
      $(shell $(COLOR_ECHO) "$(COLOR_RED)The selected TOOLCHAIN=$(TOOLCHAIN) is blacklisted:$(COLOR_RESET) $(TOOLCHAINS_BLACKLIST)" 1>&2)
      EXPECT_ERRORS := 1
    endif
  endif

  ifneq (, $(EXPECT_CONFLICT))
    $(shell $(COLOR_ECHO) "\n$(COLOR_YELLOW)EXPECT undesired behaviour!$(COLOR_RESET)" 1>&2)
  endif

  # Fail by default when errors are expected
  CONTINUE_ON_EXPECTED_ERRORS ?= 0
  ifneq (, $(EXPECT_ERRORS))
    ifneq (1,$(CONTINUE_ON_EXPECTED_ERRORS))
      $(error You can let the build continue on expected errors by setting CONTINUE_ON_EXPECTED_ERRORS=1 to the command line)
    endif
    $(shell $(COLOR_ECHO) "\n\n$(COLOR_RED)EXPECT ERRORS!$(COLOR_RESET)\n\n" 1>&2)
  endif

endif

help:
  # filter all targets starting with lowercase and containing lowercase letters, hyphens, or underscores; explicitly include generate-Makefile.ci
	@$(MAKE) -qp | sed -ne 's/\(^[a-z][a-z_-]*\|generate-Makefile.ci\):.*/\1/p' | sort -u

ifeq (iotlab-m3,$(BOARD))
  ifneq (,$(filter iotlab-%,$(MAKECMDGOALS)))
    include $(RIOTBASE)/dist/testbed-support/Makefile.iotlab
  endif
endif

ifneq (,$(filter openv-%,$(MAKECMDGOALS)))
  include $(RIOTBASE)/dist/tools/openvisualizer/makefile.openvisualizer.inc.mk
endif

# Include desvirt Makefile
include $(RIOTTOOLS)/desvirt/Makefile.desvirt

# Build a header file with all common macro definitions and undefinitions
# Everytime the header is updated, it will trigger a new compilation.
#
# The file is created first through a `.in` file that will be modified if
# any CFLAGS changed. It depends on FORCE to re-run of the script every time
# even if the file exists but the file will only be updated on modifications.
#
# The header is then created by keeping only the macros. Keeping the
# comments added absolute path in the file that screwed caching.
#
# The rebuild behavior could even only be done with an empty file, but currently
# some macros definitions are passed through this file.
$(RIOTBUILD_CONFIG_HEADER_C): $(RIOTBUILD_CONFIG_HEADER_C).in
	$(Q)sed -n -e '1i\
/* Generated file do not edit */' -e '/^#.*/ p' $< > $@

.SECONDARY: $(RIOTBUILD_CONFIG_HEADER_C).in
$(RIOTBUILD_CONFIG_HEADER_C).in: FORCE | $(CLEAN)
	@mkdir -p '$(dir $@)'
	$(Q)'$(RIOTTOOLS)/genconfigheader/genconfigheader.sh' $(CFLAGS_WITH_MACROS) \
		| '$(LAZYSPONGE)' $(LAZYSPONGE_FLAGS) '$@'

CFLAGS_WITH_MACROS += $(CFLAGS)
CFLAGS_WITH_MACROS += -DRIOT_VERSION=\"$(RIOT_VERSION)\"
CFLAGS_WITH_MACROS += -DRIOT_VERSION_CODE=$(RIOT_VERSION_CODE)
ifneq (,$(RIOT_VERSION_EXTRA))
  CFLAGS_WITH_MACROS += -DCONFIG_RIOT_VERSION_EXTRA=\""$(RIOT_VERSION_EXTRA)"\"
endif
# MODULE_NAME defines. Declared in 'makefiles/modules.inc.mk'
CFLAGS_WITH_MACROS += $(EXTDEFINES)

CFLAGS += -include '$(RIOTBUILD_CONFIG_HEADER_C)'

# include mcuboot support
include $(RIOTMAKE)/mcuboot.mk

# include Murdock helpers
include $(RIOTMAKE)/murdock.inc.mk

# Sanity check, 'all' should be the default goal
ifneq (all, $(.DEFAULT_GOAL))
  $(error .DEFAULT_GOAL := $(.DEFAULT_GOAL))
endif


# Detect if BASELIBS changed since its first use
ifneq ($(_BASELIBS_VALUE_BEFORE_USAGE),$(BASELIBS))
  $(warning $(sort $(filter-out $(_BASELIBS_VALUE_BEFORE_USAGE), $(BASELIBS)) \
                   $(filter-out $(BASELIBS), $(_BASELIBS_VALUE_BEFORE_USAGE))))
  $(error BASELIBS value changed)
endif

endif

include $(RIOTMAKE)/cargo-targets.inc.mk

# include RIOT_MAKEFILES_GLOBAL_POST configuration files
# allows setting user specific system wide configuration parsed after the body
# of $(RIOTBASE)/Makefile.include
include $(RIOT_MAKEFILES_GLOBAL_POST)