export NATIVEINCLUDES += -DNATIVE_INCLUDES
export NATIVEINCLUDES += -I$(RIOTBOARD)/$(BOARD)/include/
export NATIVEINCLUDES += -I$(RIOTBASE)/core/include/
export NATIVEINCLUDES += -I$(RIOTBASE)/drivers/include/

export CPU = native
export ELF = $(BINDIR)/$(APPLICATION).elf

USEMODULE += native-drivers

# toolchain:
export PREFIX =
export CC ?= $(PREFIX)gcc
export CXX ?= $(PREFIX)g++

ifeq ($(LTO),1)
  export AR = $(PREFIX)gcc-ar
else
  export AR = $(PREFIX)ar
endif

export AS ?= $(PREFIX)as
export LINK ?= $(PREFIX)gcc
export SIZE ?= $(PREFIX)size

ifneq ($(shell uname -s),Darwin)
  export OBJCOPY ?= $(PREFIX)objcopy
else
  ifeq (0,$(shell which gobjcopy 2>&1 > /dev/null ; echo $$?))
    export OBJCOPY ?= gobjcopy
    export OFLAGS ?= -O ihex
  else
    # If gobjcopy is not available, just create an empty file. The hexfile
    # is not used for native anyways.
    export OBJCOPY ?= touch
    export OFLAGS =
  endif
endif

ifeq ($(shell uname -s),Darwin)
  export DEBUGGER ?= lldb
else
  export DEBUGGER ?= gdb
endif

export TERMPROG ?= $(ELF)
export FLASHER = true
export VALGRIND ?= valgrind
export CGANNOTATE ?= cg_annotate
export GPROF ?= gprof

# basic cflags:
export CFLAGS += -Wall -Wextra -pedantic -std=gnu99

ifeq ($(shell uname -m),x86_64)
  export CFLAGS += -m32
endif
ifneq (,$(filter -DDEVELHELP,$(CFLAGS)))
  export CFLAGS += -fstack-protector-all
endif
ifeq ($(shell uname -s),FreeBSD)
  ifeq ($(shell uname -m),amd64)
    export CFLAGS += -m32 -DCOMPAT_32BIT -B/usr/lib32
  endif
endif
ifeq ($(shell uname -s),Darwin)
  export CFLAGS += -Wno-deprecated-declarations
endif

# unwanted (CXXUWFLAGS) and extra (CXXEXFLAGS) flags for c++
export CXXUWFLAGS +=
export CXXEXFLAGS +=

ifeq ($(shell uname -m),x86_64)
  export LINKFLAGS += -m32
endif
ifeq ($(shell uname -s),FreeBSD)
  ifeq ($(shell uname -m),amd64)
    export LINKFLAGS += -m32 -DCOMPAT_32BIT -L/usr/lib32 -B/usr/lib32
  endif
  export LINKFLAGS += -L $(BINDIR)
else
  export LINKFLAGS += -ldl
endif

# clean up unused functions
export CFLAGS += -ffunction-sections -fdata-sections
ifeq ($(shell uname -s),Darwin)
  export LINKFLAGS += -Wl,-dead_strip
else
  export LINKFLAGS += -Wl,--gc-sections
endif
export LINKFLAGS += -ffunction-sections

# set the tap interface for term/valgrind
ifneq (,$(filter netdev_default gnrc_netdev_default,$(USEMODULE)))
  export PORT ?= tap0
else
  export PORT =
endif

export TERMFLAGS := $(PORT) $(TERMFLAGS)

export ASFLAGS =
ifeq ($(shell basename $(DEBUGGER)),lldb)
  export DEBUGGER_FLAGS = -- $(ELF) $(TERMFLAGS)
else
  export DEBUGGER_FLAGS = -q --args $(ELF) $(TERMFLAGS)
endif
term-valgrind: export VALGRIND_FLAGS ?= \
	--leak-check=full \
	--track-origins=yes \
	--fullpath-after=$(RIOTBASE)/ \
	--read-var-info=yes
debug-valgrind-server: export VALGRIND_FLAGS ?= --vgdb=yes --vgdb-error=0 -v \
	--leak-check=full --track-origins=yes --fullpath-after=${RIOTBASE} \
	--read-var-info=yes
term-cachegrind: export CACHEGRIND_FLAGS += --tool=cachegrind
term-gprof: export TERMPROG = GMON_OUT_PREFIX=gmon.out $(ELF)
all-valgrind: export CFLAGS += -DHAVE_VALGRIND_H -g
all-valgrind: export NATIVEINCLUDES += $(shell pkg-config valgrind --cflags)
all-debug: export CFLAGS += -g
all-cachegrind: export CFLAGS += -g
all-gprof: export CFLAGS += -pg
all-gprof: export LINKFLAGS += -pg
all-asan: export CFLAGS += -fsanitize=address -fno-omit-frame-pointer -g
all-asan: export CFLAGS += -DNATIVE_IN_CALLOC
all-asan: export LINKFLAGS += -fsanitize=address -fno-omit-frame-pointer -g

export INCLUDES += $(NATIVEINCLUDES)

export CFLAGS += -DDEBUG_ASSERT_VERBOSE

# workaround for https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52624
ifneq ($(shell gcc --version | head -1 | grep -E ' (4.6|4.7)'),)
  export CFLAGS += -DHAVE_NO_BUILTIN_BSWAP16
endif

# backward compatability with glibc <= 2.17 for native
ifeq ($(CPU),native)
  ifeq ($(shell uname -s),Linux)
    ifeq ($(shell ldd --version |  awk '/^ldd/{if ($$NF < 2.17) {print "yes"} else {print "no"} }'),yes)
	  LINKFLAGS += -lrt
    endif
  endif
endif

# clumsy way to enable building native on osx:
BUILDOSXNATIVE = 0
ifeq ($(CPU),native)
  ifeq ($(shell uname -s),Darwin)
    BUILDOSXNATIVE = 1
  endif
endif

all: # do not override first target

all-debug: all

all-gprof: all

all-asan: all

all-valgrind: all

all-cachegrind: all

term-valgrind:
	$(VALGRIND) $(VALGRIND_FLAGS) $(ELF) $(PORT)

debug-valgrind-server:
	$(VALGRIND) $(VALGRIND_FLAGS) $(ELF) $(PORT)

debug-valgrind:
	$(eval VALGRIND_PID ?= $(shell pgrep -n memcheck-x86-li -u ${USER} | cut -d" " -f1))
	$(eval DEBUGGER_FLAGS := -ex "target remote | vgdb --pid=${VALGRIND_PID}" $(DEBUGGER_FLAGS))
	$(DEBUGGER) $(DEBUGGER_FLAGS)

term-cachegrind:
	$(VALGRIND) $(CACHEGRIND_FLAGS) $(ELF) $(PORT)

term-gprof: term

eval-gprof:
	$(GPROF) $(ELF) $(shell ls -rt gmon.out* | tail -1)

eval-cachegrind:
	$(CGANNOTATE) $(shell ls -rt cachegrind.out* | tail -1)

export UNDEF += $(BINDIR)/cpu/startup.o