Makefile.include

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

all:

# set undefined variables
RIOTBASE       ?= $(dir $(lastword $(MAKEFILE_LIST)))
CCACHE_BASEDIR ?= $(RIOTBASE)
RIOTCPU        ?= $(RIOTBASE)/cpu
RIOTBOARD      ?= $(RIOTBASE)/boards
RIOTPKG        ?= $(RIOTBASE)/pkg
RIOTPROJECT    ?= $(shell git rev-parse --show-toplevel 2>/dev/null || pwd)
GITCACHE       ?= $(RIOTBASE)/dist/tools/git/git-cache
APPDIR         ?= $(CURDIR)
BINDIRBASE     ?= $(APPDIR)/bin
BINDIR         ?= $(BINDIRBASE)/$(BOARD)

__DIRECTORY_VARIABLES := RIOTBASE CCACHE_BASEDIR RIOTCPU RIOTBOARD RIOTPKG GITCACHE RIOTPROJECT APPDIR BINDIRBASE BINDIR

# Make all paths absolute.
override RIOTBASE       := $(abspath $(RIOTBASE))
override CCACHE_BASEDIR := $(abspath $(CCACHE_BASEDIR))
override RIOTCPU        := $(abspath $(RIOTCPU))
override RIOTBOARD      := $(abspath $(RIOTBOARD))
override RIOTPKG        := $(abspath $(RIOTPKG))
override RIOTPROJECT    := $(abspath $(RIOTPROJECT))
override GITCACHE       := $(abspath $(GITCACHE))
override APPDIR         := $(abspath $(APPDIR))/
override BINDIRBASE     := $(abspath $(BINDIRBASE))
override BINDIR         := $(abspath $(BINDIR))/

# 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

# Use absolute paths in recusive "make" even if overriden on command line.
MAKEOVERRIDES += $(foreach v,${__DIRECTORY_VARIABLES},${v}=${${v}})

# Path to the current directory relative to the git root
BUILDRELPATH ?= $(shell git rev-parse --show-prefix)

# 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 $(RIOTBASE)/Makefile.docker

# Static code analysis tools provided by LLVM
include $(RIOTBASE)/Makefile.scan-build

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

COLOR_GREEN  :=
COLOR_RED    :=
COLOR_PURPLE :=
COLOR_RESET  :=
COLOR_ECHO   := /bin/echo

OS := $(shell uname)

ifeq (0,  $(shell tput colors 2>&1 > /dev/null; echo $$?))
  COLOR_GREEN  := \033[1;32m
  COLOR_RED    := \033[1;31m
  COLOR_YELLOW := \033[1;33m
  COLOR_PURPLE := \033[1;35m
  COLOR_RESET  := \033[0m
  ifeq ($(OS),Darwin)
    COLOR_ECHO   := echo -e
    SHELL=bash
  else
    COLOR_ECHO   := /bin/echo -e
  endif
endif

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

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

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

ifneq (10,$(if ${RIOT_VERSION},1,0)$(if ${__RIOTBUILD_FLAG},1,0))

# 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 2>&1 > /dev/null ; echo $$?))
      WGET := $(shell which wget)
    endif
  endif
  ifeq (,$(CURL))
    ifeq (0,$(shell which curl 2>&1 > /dev/null ; echo $$?))
      CURL := $(shell which curl)
    endif
  endif
  ifeq (,$(WGET)$(CURL))
    $(error 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 2>&1 > /dev/null ; echo $$?))
    UNZIP_HERE := $(shell which unzip) -q
  else
    ifeq (0,$(shell which 7z 2>&1 > /dev/null ; echo $$?))
      UNZIP_HERE := $(shell which 7z) x -bd
    else
      $(error Neither unzip nor 7z is installed.)
    endif
  endif
endif

ifeq (, ${APPLICATION})
    $(error An application name must be specified as APPLICATION.)
endif
ifneq (0,$(shell test -d $(RIOTBOARD)/$(BOARD); echo $$?))
    $(error The specified board $(BOARD) does not exist.)
endif

# Use TOOLCHAIN environment variable to select the toolchain to use.
# Default: gnu
TOOLCHAIN ?= gnu

# TOOLCHAIN = clang is an alias for TOOLCHAIN = llvm
ifeq (clang,$(TOOLCHAIN))
# use override so that we can redefine a variable set on the command line (as
# opposed to one set in the environment)
override TOOLCHAIN := llvm
endif
# TOOLCHAIN = gcc is an alias for TOOLCHAIN = gnu
ifeq (gcc,$(TOOLCHAIN))
# use override so that we can redefine a variable set on the command line (as
# opposed to one set in the environment)
override TOOLCHAIN := gnu
endif

ifeq (,$(TOOLCHAIN))
override TOOLCHAIN := gnu
endif

export TOOLCHAIN

# 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)-)

# Import all toolchain settings
include $(RIOTCPU)/Makefile.include.$(TOOLCHAIN)

# Add standard include directories
INCLUDES += -I$(RIOTBASE)/core/include -I$(RIOTBASE)/drivers/include -I$(RIOTBASE)/sys/include
INCLUDES += -I$(RIOTCPU)/$(CPU)/include
INCLUDES += -I$(RIOTBOARD)/$(BOARD)/include

# mandatory includes!
include $(RIOTBASE)/Makefile.pseudomodules
include $(RIOTBASE)/Makefile.defaultmodules
include $(RIOTBOARD)/$(BOARD)/Makefile.include
include $(RIOTCPU)/$(CPU)/Makefile.include

# get number of interfaces straight before resolving dependencies
GNRC_NETIF_NUMOF ?= 1

ifneq ($(GNRC_NETIF_NUMOF),1)
  CFLAGS += -DGNRC_NETIF_NUMOF=$(GNRC_NETIF_NUMOF)
endif

include $(RIOTBASE)/Makefile.dep

USEMODULE += $(filter-out $(DISABLE_MODULE), $(DEFAULT_MODULE))

ifeq ($(strip $(MCU)),)
	MCU = $(CPU)
endif

# if you want to publish the board into the sources as an uppercase #define
BOARDDEF := $(shell echo $(BOARD) | tr 'a-z' 'A-Z' | tr '-' '_')
CPUDEF := $(shell echo $(CPU) | tr 'a-z' 'A-Z' | tr '-' '_')
MCUDEF := $(shell echo $(MCU) | tr 'a-z' 'A-Z' | tr '-' '_')
CFLAGS += -DBOARD_$(BOARDDEF)=\"$(BOARD)\" -DRIOT_BOARD=BOARD_$(BOARDDEF)
CFLAGS += -DCPU_$(CPUDEF)=\"$(CPU)\" -DRIOT_CPU=CPU_$(CPUDEF)
CFLAGS += -DMCU_$(MCUDEF)=\"$(MCU)\" -DRIOT_MCU=MCU_$(MCUDEF)

# OSX fails to create empty archives. Provide a wrapper to catch that error.
ifneq (0, $(shell mkdir -p $(BINDIR); $(AR) rc $(BINDIR)empty-archive.a 2> /dev/null; \
            echo $$?; rm -f $(BINDIR)empty-archive.a 2>&1 > /dev/null))
	AR := $(RIOTBASE)/dist/ar-wrapper $(AR)
endif

# Feature test default CFLAGS and LINKFLAGS for the set compiled.
include $(RIOTBASE)/Makefile.cflags

# make the RIOT version available to the program
ifeq ($(origin RIOT_VERSION), undefined)
  GIT_STRING := $(shell git --git-dir="$(RIOTBASE)/.git" describe --always --abbrev=4 --dirty=-`hostname` 2> /dev/null)
  ifneq (,$(GIT_STRING))
    GIT_BRANCH := $(shell git --git-dir="$(RIOTBASE)/.git" rev-parse --abbrev-ref HEAD)
    ifeq ($(strip $(GIT_BRANCH)),master)
      RIOT_VERSION := $(GIT_STRING)
    else
      RIOT_VERSION := $(GIT_STRING)-$(GIT_BRANCH)
    endif
  else
    RIOT_VERSION := 'UNKNOWN (builddir: $(RIOTBASE))'
  endif
endif

# the binaries to link
BASELIBS += $(BINDIR)${APPLICATION}.a
BASELIBS += $(USEPKG:%=${BINDIR}%.a)
BASELIBS += $(APPDEPS)

.PHONY: all clean flash term doc debug debug-server reset objdump help info-modules
.PHONY: ..in-docker-container

ELFFILE ?= $(BINDIR)$(APPLICATION).elf
HEXFILE ?= $(ELFFILE:.elf=.hex)

# variables used to compile and link c++
CPPMIX ?= $(if $(wildcard *.cpp),1,)

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

DIRS += $(EXTERNAL_MODULE_DIRS)

ifeq ($(BUILD_IN_DOCKER),1)
all: ..in-docker-container
else
## make script for your application. Build RIOT-base here!
all: ..compiler-check ..build-message $(RIOTBUILD_CONFIG_HEADER_C) $(USEPKG:%=${BINDIR}%.a) $(APPDEPS)
	$(AD)DIRS="$(DIRS)" "$(MAKE)" -C $(APPDIR) -f $(RIOTBASE)/Makefile.application
ifeq (,$(RIOTNOLINK))
ifeq ($(BUILDOSXNATIVE),1)
	$(AD)$(if $(CPPMIX),$(CXX),$(LINK)) $(UNDEF) -o $(ELFFILE) $$(find $(BASELIBS) -size +8c) $(LINKFLAGS) $(LINKFLAGPREFIX)-no_pie
else
	$(AD)$(if $(CPPMIX),$(CXX),$(LINK)) $(UNDEF) -o $(ELFFILE) $(LINKFLAGPREFIX)--start-group $(BASELIBS) -lm $(LINKFLAGPREFIX)--end-group  $(LINKFLAGPREFIX)-Map=$(BINDIR)$(APPLICATION).map $(LINKFLAGPREFIX)--cref $(LINKFLAGS)
endif
	$(AD)$(SIZE) $(ELFFILE)
	$(AD)$(OBJCOPY) $(OFLAGS) $(ELFFILE) $(HEXFILE)
endif
endif # BUILD_IN_DOCKER

..compiler-check:
	@command -v $(CC) >/dev/null 2>&1 || \
		{ $(COLOR_ECHO) \
		'${COLOR_RED}Compiler $(CC) is required but not found in PATH.  Aborting.${COLOR_RESET}'; \
		exit 1; }

..build-message:
	@$(COLOR_ECHO) '${COLOR_GREEN}Building application "$(APPLICATION)" for "$(BOARD)" with MCU "$(MCU)".${COLOR_RESET}'
	@$(COLOR_ECHO)

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

include $(RIOTBASE)/sys/Makefile.include
include $(RIOTBASE)/drivers/Makefile.include

# The `clean` needs to be serialized before everything else.
ifneq (, $(filter clean, $(MAKECMDGOALS)))
    all $(BASELIBS) $(USEPKG:%=$(RIOTPKG)/%/Makefile.include) $(RIOTBUILD_CONFIG_HEADER_C): clean
endif

# include Makefile.includes for packages in $(USEPKG)
$(RIOTPKG)/%/Makefile.include::
	$(AD)"$(MAKE)" -C $(RIOTPKG)/$* Makefile.include

.PHONY: $(USEPKG:%=$(RIOTPKG)/%/Makefile.include)
-include $(USEPKG:%=$(RIOTPKG)/%/Makefile.include)

USEMODULE_INCLUDES_ = $(shell echo $(USEMODULE_INCLUDES) | tr ' ' '\n' | awk '!a[$$0]++' | tr '\n' ' ')

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

.PHONY: $(USEPKG:%=${BINDIR}%.a)
$(USEPKG:%=${BINDIR}%.a): $(RIOTBUILD_CONFIG_HEADER_C)
	@mkdir -p ${BINDIR}
	"$(MAKE)" -C $(RIOTPKG)/$(patsubst ${BINDIR}%.a,%,$@)

clean:
	-@for i in $(USEPKG) ; do "$(MAKE)" -C $(RIOTPKG)/$$i clean ; done
	-@rm -rf $(BINDIR)
	-@rm -rf $(SCANBUILD_OUTPUTDIR)

# Remove intermediates, but keep the .elf, .hex and .map etc.
clean-intermediates:
	-@for i in $(USEPKG) ; do "$(MAKE)" -C $(RIOTPKG)/$$i distclean ; done
	-@rm -rf $(BINDIR)/*.a $(BINDIR)/*/

clean-pkg:
	-@for i in $(USEPKG) ; do "$(MAKE)" -C $(RIOTPKG)/$$i distclean ; done

distclean:
	-@for i in $(USEPKG) ; do "$(MAKE)" -C $(RIOTPKG)/$$i distclean ; done
	-@rm -rf $(BINDIRBASE)

flash: all
	@command -v $(FLASHER) >/dev/null 2>&1 || \
		{ $(COLOR_ECHO) \
		'${COLOR_RED}Flash program $(FLASHER) not found. Aborting.${COLOR_RESET}'; \
		exit 1; }
	$(FLASHER) $(FFLAGS)

term: $(filter flash, $(MAKECMDGOALS))
	@command -v $(TERMPROG) >/dev/null 2>&1 || \
		{ $(COLOR_ECHO) \
		'${COLOR_RED}Terminal program $(TERMPROG) not found. Aborting.${COLOR_RESET}'; \
		exit 1; }
	$(TERMPROG) $(TERMFLAGS)

list-ttys:
	$(AD)$(RIOTBASE)/dist/tools/usb-serial/list-ttys.sh

doc:
	make -BC $(RIOTBASE) doc

debug:
	@command -v $(DEBUGGER) >/dev/null 2>&1 || \
		{ $(COLOR_ECHO) \
		'${COLOR_RED}Debug program $(DEBUGGER) not found. Aborting.${COLOR_RESET}'; \
		exit 1; }
	$(DEBUGGER) $(DEBUGGER_FLAGS)

debug-server:
	@command -v $(DEBUGSERVER) >/dev/null 2>&1 || \
		{ $(COLOR_ECHO) \
		'${COLOR_RED}Debug server program $(DEBUGSERVER) not found. Aborting.${COLOR_RESET}'; \
		exit 1; }
	$(DEBUGSERVER) $(DEBUGSERVER_FLAGS)

reset:
	@command -v $(RESET) >/dev/null 2>&1 || \
		{ $(COLOR_ECHO) \
		'${COLOR_RED}Reset program $(RESET) not found. Aborting.${COLOR_RESET}'; \
		exit 1; }
	$(RESET) $(RESET_FLAGS)

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

objdump:
	@command -v $(OBJDUMP) >/dev/null 2>&1 || \
		{ $(COLOR_ECHO) \
		'${COLOR_RED}Objdump program $(OBJDUMP) not found. Aborting.${COLOR_RESET}'; \
		exit 1; }
	$(OBJDUMP) $(OBJDUMPFLAGS) $(ELFFILE) | less

# Generate an XML file containing all macro definitions and include paths for
# use in Eclipse CDT
.PHONY: eclipsesym eclipsesym.xml $(CURDIR)/eclipsesym.xml
eclipsesym: $(CURDIR)/eclipsesym.xml
eclipsesym.xml: $(CURDIR)/eclipsesym.xml

$(CURDIR)/eclipsesym.xml:
	$(AD)printf "%s\n" $(CC) $(CFLAGS_WITH_MACROS) $(INCLUDES) | \
		$(RIOTBASE)/dist/tools/eclipsesym/cmdline2xml.sh > $@

# Extra make goals for testing and comparing changes.
include $(RIOTBASE)/Makefile.buildtests

# import list of provided features
-include $(RIOTBOARD)/$(BOARD)/Makefile.features

# Export variables used throughout the whole make system:
include $(RIOTBASE)/Makefile.vars

# Warn if the selected board and drivers don't provide all needed features:
ifneq (, $(filter all, $(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 (, $(filter-out $(FEATURES_PROVIDED) $(FEATURES_OPTIONAL), $(FEATURES_REQUIRED)))
    $(shell $(COLOR_ECHO) "$(COLOR_RED)There are unsatisfied feature requirements:$(COLOR_RESET)"\
                          "$(sort $(filter-out $(FEATURES_PROVIDED) $(FEATURES_OPTIONAL), $(FEATURES_REQUIRED)))" 1>&2)
    EXPECT_ERRORS := 1
  endif

  # Test if any required feature conflict with another one.
  CONFLICT := $(foreach var,$(FEATURES_CONFLICT),$(if $(filter $(words $(subst :, ,$(var))),$(words $(filter $(FEATURES_REQUIRED),$(subst :, ,$(var))))),$(subst :, ,$(var))))
  ifneq (, $(strip $(CONFLICT)))
    $(shell $(COLOR_ECHO) "$(COLOR_YELLOW)The following features may conflict:$(COLOR_RESET)"\
                          "$(COLOR_GREEN)$(sort $(filter $(FEATURES_REQUIRED), $(CONFLICT)))$(COLOR_RESET)" 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

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

  ifneq (, $(EXPECT_ERRORS))
    $(shell $(COLOR_ECHO) "\n\n$(COLOR_RED)EXPECT ERRORS!$(COLOR_RESET)\n\n" 1>&2)
  endif

endif

else # RIOT_VERSION

  export __RIOTBUILD_FLAG := RIOT

  NUM_RIOT_VERSION := $(shell cd $(RIOTBASE) && git rev-parse --verify --short "$(RIOT_VERSION)" 2>/dev/null)
  ifeq (, ${NUM_RIOT_VERSION})
    $(error The supplied RIOT_VERSION=$(RIOT_VERSION) is invalid!)
  endif

  all $(filter-out clean, ${MAKECMDGOALS}): ..delegate
  ifneq (, $(filter clean, $(MAKECMDGOALS)))
    all $(filter-out clean, ${MAKECMDGOALS}): clean
  endif

  clean:
	-$(AD)rm -rf $(BINDIR)

  $(BINDIR)riot-version/$(NUM_RIOT_VERSION)/Makefile.include:
	$(AD)rm -rf $(@D)
	$(AD)mkdir -p $(@D)
	$(AD)cd $(RIOTBASE) && git archive --format=tar $(NUM_RIOT_VERSION) | ( cd $(@D) && tar x 1>&2 )

  ..delegate: $(BINDIR)riot-version/$(NUM_RIOT_VERSION)/Makefile.include
	@$(COLOR_ECHO) '$(COLOR_GREEN)Using RIOT_VERSION=${NUM_RIOT_VERSION}$(COLOR_RESET)' 1>&2
	@$(COLOR_ECHO)
	$(MAKE) RIOTBASE=$(<D) $(filter-out clean, ${MAKECMDGOALS})

endif

help:
	@$(MAKE) -qp | sed -ne 's/\(^[a-z][a-z_-]*\):.*/\1/p' | sort | uniq

info-modules:
	@for i in $(sort $(USEMODULE)); do echo $$i; done

ifneq (,$(filter iotlab-m3 wsn430-v1_3b wsn430-v1_4,$(BOARD)))
  ifneq (,$(filter iotlab-%,$(MAKECMDGOALS)))
    include $(RIOTBASE)/dist/testbed-support/Makefile.iotlab
  endif
endif

# Include desvirt Makefile
include $(RIOTBASE)/dist/tools/desvirt/Makefile.desvirt

# include bindist target
include $(RIOTBASE)/Makefile.bindist

# Add all USEMODULE modules to CFLAGS
include $(RIOTBASE)/Makefile.modules

# Build a header file with all common macro definitions and undefinitions
# make it phony to force re-run of the script every time even if the file exists
# The script will only touch the file if anything has changed since last time.
.PHONY: $(RIOTBUILD_CONFIG_HEADER_C)
$(RIOTBUILD_CONFIG_HEADER_C):
	@mkdir -p '$(dir $@)'
	$(AD)'$(RIOTBASE)/dist/tools/genconfigheader/genconfigheader.sh' '$@' $(CFLAGS_WITH_MACROS)

CFLAGS_WITH_MACROS := $(CFLAGS)
CFLAGS := $(patsubst -D%,,$(CFLAGS))
CFLAGS := $(patsubst -U%,,$(CFLAGS))
CFLAGS += -include '$(RIOTBUILD_CONFIG_HEADER_C)'

ifneq (,$(RIOT_VERSION_OVERRIDE))
export CFLAGS += -DRIOT_VERSION=\"$(RIOT_VERSION_OVERRIDE)\"
else
export CFLAGS += -DRIOT_VERSION=\"$(RIOT_VERSION)\"
endif