#
# Makefile for compiling Arduino sketches from command line
#
# Copyright (C) 2012 Sudar <http://sudarmuthu.com>, based on
# M J Oldfield work: https://github.com/mjoldfield/Arduino-Makefile
#
# Copyright (C) 2010,2011,2012 Martin Oldfield <m@mjo.tc>, based on
# work that is copyright Nicholas Zambetti, David A. Mellis & Hernando
# Barragan.
#
# This file is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as
# published by the Free Software Foundation; either version 2.1 of the
# License, or (at your option) any later version.
#
# Adapted from Arduino 0011 Makefile by M J Oldfield
#
# Original Arduino adaptation by mellis, eighthave, oli.keller
#
# Current version: 1.6.0
#

arduino_output =
# When output is not suppressed and we're in the top-level makefile,
# running for the first time (i.e., not after a restart after
# regenerating the dependency file), then output the configuration.
ifndef ARDUINO_QUIET
    ARDUINO_QUIET = 0
endif
ifeq ($(ARDUINO_QUIET),0)
    ifeq ($(MAKE_RESTARTS),)
        ifeq ($(MAKELEVEL),0)
            arduino_output = $(info $(1))
        endif
    endif
endif

include $(ARDMK_DIR)/Common.mk

ifeq ($(CURRENT_OS), WINDOWS)
    echo $(error Error: Windows is not supported! Please upgrade to a better operating system and try again)
endif

$(call show_config_variable,ARDMK_DIR,[USER])

$(call show_config_variable,TARGET,[DEFAULT])

$(call show_config_variable,ARDUINO_VERSION,[USER])
$(call show_config_variable,ARDUINO_VERSION_SHORT,[USER])

$(call show_config_variable,ARCHITECTURE,[USER])
$(call show_config_variable,ARDMK_VENDOR,[DEFAULT])

$(call show_config_variable,ARDUINO_VAR_PATH,[COMPUTED],(from ARDUINO_DIR))
$(call show_config_variable,BOARDS_TXT,[COMPUTED],(from ARDUINO_DIR))

ifdef BUNDLED_AVR_TOOLS_DIR
	AVR_TOOLS_DIR     = $(BUNDLED_AVR_TOOLS_DIR)
	$(call show_config_variable,AVR_TOOLS_DIR,[BUNDLED],(in Arduino distribution))

	AVRDUDE = $(AVR_TOOLS_DIR)/bin/avrdude
	AVRDUDE_CONF = $(AVR_TOOLS_DIR)/etc/avrdude.conf
else
	SYSTEMPATH_AVR_TOOLS_DIR := $(call dir_if_exists,$(abspath $(dir $(shell which $(CC_NAME)))/..))
	ifdef SYSTEMPATH_AVR_TOOLS_DIR
		AVR_TOOLS_DIR = $(SYSTEMPATH_AVR_TOOLS_DIR)
        $(call show_config_variable,AVR_TOOLS_DIR,[AUTODETECTED],(found in $$PATH))
	else
		# One last attempt using $(TOOL_PREFIX)-gcc in case using arm
		SYSTEMPATH_AVR_TOOLS_DIR := $(call dir_if_exists,$(abspath $(dir $(shell which $($(TOOL_PREFIX)-gcc)))/..))
		ifdef SYSTEMPATH_AVR_TOOLS_DIR
			AVR_TOOLS_DIR = $(SYSTEMPATH_AVR_TOOLS_DIR)
			$(call show_config_variable,AVR_TOOLS_DIR,[AUTODETECTED],(found in $$PATH))
		else
			echo $(error No AVR tools directory found)
		endif
	endif
endif

$(call show_config_variable,ARDUINO_LIB_PATH,[COMPUTED],(from ARDUINO_DIR))
$(call show_config_variable,ARDUINO_PLATFORM_LIB_PATH,[COMPUTED],(from ARDUINO_DIR))
$(call show_config_variable,PROJ_LIBS_PATH,[DEFAULT])

$(call show_config_variable,PRE_BUILD_HOOK,[DEFAULT])

########################################################################
# boards.txt parsing

ifdef BOARD_SUB
    BOARD_SUB := $(strip $(BOARD_SUB))
    $(call show_config_variable,BOARD_SUB,[USER])
endif

BOARD_TAG := $(strip $(BOARD_TAG))
$(call show_config_variable,BOARD_TAG,[USER])

ifdef BOARD_CLOCK
    BOARD_CLOCK := $(strip $(BOARD_CLOCK))
    $(call show_config_variable,BOARD_CLOCK,[USER])
endif

# Select a core from the 'cores' directory
CORE = $(call PARSE_BOARD,$(BOARD_TAG),build.core)
$(call show_config_variable,CORE,[COMPUTED],(from build.core))

# Which variant? This affects the include path
VARIANT := $(call PARSE_BOARD,$(BOARD_TAG),menu.(chip|cpu).$(BOARD_SUB).build.variant)
ifndef VARIANT
    VARIANT := $(call PARSE_BOARD,$(BOARD_TAG),build.variant)
endif
$(call show_config_variable,VARIANT,[COMPUTED],(from build.variant))

BOARD := $(call PARSE_BOARD,$(BOARD_TAG),build.board)
ifndef BOARD
    BOARD := $(shell echo $(ARCHITECTURE)_$(BOARD_TAG) | tr '[:lower:]' '[:upper:]')
endif
$(call show_config_variable,BOARD,[COMPUTED],(from build.board))

# see if we are a caterina device like leonardo or micro
CATERINA := $(findstring caterina,$(call PARSE_BOARD,$(BOARD_TAG),menu.(chip|cpu).$(BOARD_SUB).bootloader.file))
ifndef CATERINA
    CATERINA := $(findstring caterina,$(call PARSE_BOARD,$(BOARD_TAG),bootloader.file))
endif

# processor stuff
MCU := $(call PARSE_BOARD,$(BOARD_TAG),menu.(chip|cpu).$(BOARD_SUB).build.mcu)
ifndef MCU
    MCU := $(call PARSE_BOARD,$(BOARD_TAG),build.mcu)
endif

ifdef BOARD_CLOCK
    F_CPU := $(call PARSE_BOARD,$(BOARD_TAG),menu.(speed|clock).$(BOARD_CLOCK).build.f_cpu)
endif
ifndef F_CPU
    F_CPU := $(call PARSE_BOARD,$(BOARD_TAG),menu.(chip|cpu).$(BOARD_SUB).build.f_cpu)
endif
ifndef F_CPU
    F_CPU := $(call PARSE_BOARD,$(BOARD_TAG),build.f_cpu)
endif

# USB IDs for the caterina devices like leonardo or micro
USB_VID = $(call PARSE_BOARD,$(BOARD_TAG),build.vid)

# coping with 2-3 methods sparkfun use for usb.pid
USB_PID := $(call PARSE_BOARD,$(BOARD_TAG),build.pid)
ifndef USB_PID
    USB_PID := $(call PARSE_BOARD,$(BOARD_TAG),menu.(chip|cpu).$(BOARD_SUB).build.pid)
endif

USB_PRODUCT := $(call PARSE_BOARD,$(BOARD_TAG),build.usb_product)
ifdef USB_PRODUCT
    $(call show_config_variable,USB_PRODUCT,[COMPUTED])
endif

USB_MANUFACTURER := $(call PARSE_BOARD,$(BOARD_TAG),build.usb_manufacturer)
ifndef USB_MANUFACTURER
    USB_MANUFACTURER = "Unknown"
else
    $(call show_config_variable,USB_MANUFACTURER,[COMPUTED])
endif

# normal programming info
AVRDUDE_ARD_PROGRAMMER := $(call PARSE_BOARD,$(BOARD_TAG),menu.(chip|cpu).$(BOARD_SUB).upload.protocol)
ifndef AVRDUDE_ARD_PROGRAMMER
    AVRDUDE_ARD_PROGRAMMER := $(call PARSE_BOARD,$(BOARD_TAG),upload.protocol)
endif

AVRDUDE_ARD_BAUDRATE := $(call PARSE_BOARD,$(BOARD_TAG),menu.(chip|cpu).$(BOARD_SUB).upload.speed)
ifndef AVRDUDE_ARD_BAUDRATE
    AVRDUDE_ARD_BAUDRATE := $(call PARSE_BOARD,$(BOARD_TAG),upload.speed)
endif

BOOTLOADER_PATH = $(call PARSE_BOARD,$(BOARD_TAG),bootloader.path)

BOOTLOADER_FILE := $(call PARSE_BOARD,$(BOARD_TAG),menu.(chip|cpu).$(BOARD_SUB).bootloader.file)
ifndef BOOTLOADER_FILE
    BOOTLOADER_FILE := $(call PARSE_BOARD,$(BOARD_TAG),bootloader.file)
endif

HEX_MAXIMUM_SIZE := $(call PARSE_BOARD,$(BOARD_TAG),menu.(chip|cpu).$(BOARD_SUB).upload.maximum_size)
ifndef HEX_MAXIMUM_SIZE
    HEX_MAXIMUM_SIZE := $(call PARSE_BOARD,$(BOARD_TAG),upload.maximum_size)
endif

$(call show_config_variable,OBJDIR,[COMPUTED],(from BOARD_TAG))

# Now that we have ARDUINO_DIR, ARDMK_VENDOR, ARCHITECTURE and CORE,
# we can set ARDUINO_CORE_PATH.
ifeq ($(strip $(CORE)),)
    ARDUINO_CORE_PATH = $(ARDUINO_DIR)/hardware/$(ARCHITECTURE)/$(ARDUINO_VERSION)/cores/arduino
    $(call show_config_variable,ARDUINO_CORE_PATH,[DEFAULT])
else
    ARDUINO_CORE_PATH = $(ALTERNATE_CORE_PATH)/cores/$(CORE)
    ifeq ($(wildcard $(ARDUINO_CORE_PATH)),)
        ARDUINO_CORE_PATH = $(ARDUINO_DIR)/hardware/$(ARCHITECTURE)/$(ARDUINO_VERSION)/cores/$(CORE)
        $(call show_config_variable,ARDUINO_CORE_PATH,[COMPUTED],(from ARDUINO_DIR, BOARD_TAG and boards.txt))
    else
        $(call show_config_variable,ARDUINO_CORE_PATH,[COMPUTED],(from ALTERNATE_CORE_PATH, BOARD_TAG and boards.txt))
    endif
endif

########################################################################
# Reset

ARD_RESET_ARDUINO := $(PYTHON_CMD) $(ARD_RESET_ARDUINO_PATH)
RESET_CMD = $(ARD_RESET_ARDUINO) $(DEVICE_PATH)
$(call show_config_variable,RESET_CMD,[COMPUTED],(from PYTHON_CMD, ARD_RESET_OPTS and MONITOR_PORT))

ifneq ($(CATERINA),)
    ERROR_ON_CATERINA = $(error On $(BOARD_TAG), raw_xxx operation is not supported)
else
    ERROR_ON_CATERINA =
endif

########################################################################
# Core sources
ifdef ARDUINO_CORE_PATH
    CORE_C_SRCS     = $(wildcard $(ARDUINO_CORE_PATH)/*.c)
    CORE_C_SRCS    += $(wildcard $(ARDUINO_CORE_PATH)/$(TOOL_PREFIX)-libc/*.c)
    CORE_CPP_SRCS   = $(wildcard $(ARDUINO_CORE_PATH)/*.cpp)
    CORE_AS_SRCS    = $(wildcard $(ARDUINO_CORE_PATH)/*.S)

    # ArduinoCore-API
    CORE_C_SRCS    += $(wildcard $(ARDUINO_CORE_PATH)/api/*.c)
    CORE_CPP_SRCS  += $(wildcard $(ARDUINO_CORE_PATH)/api/*.cpp)

    ifneq ($(strip $(NO_CORE_MAIN_CPP)),)
        CORE_CPP_SRCS := $(filter-out %main.cpp, $(CORE_CPP_SRCS))
        $(call show_config_info,NO_CORE_MAIN_CPP set so core library will not include main.cpp,[MANUAL])
    endif

    CORE_OBJ_FILES  = $(CORE_C_SRCS:.c=.c.o) $(CORE_CPP_SRCS:.cpp=.cpp.o) $(CORE_AS_SRCS:.S=.S.o)
    CORE_OBJS       += $(patsubst $(ARDUINO_CORE_PATH)/%,  \
            $(OBJDIR)/core/%,$(CORE_OBJ_FILES))
endif

########################################################################
# Serial monitor baudrate

$(call show_config_variable,MONITOR_BAUDRATE,[USER])

########################################################################
# Rules for making stuff

# The name of the main targets
TARGET_HEX = $(OBJDIR)/$(TARGET).hex
TARGET_ELF = $(OBJDIR)/$(TARGET).elf
TARGET_EEP = $(OBJDIR)/$(TARGET).eep
TARGET_BIN = $(OBJDIR)/$(TARGET).bin
CORE_LIB   = $(OBJDIR)/libcore.a

# recursive wildcard function, call with params:
#  - start directory (finished with /) or empty string for current dir
#  - glob pattern
# (taken from http://blog.jgc.org/2011/07/gnu-make-recursive-wildcard-function.html)
rwildcard=$(foreach d,$(wildcard $1*),$(call rwildcard,$d/,$2) $(filter $(subst *,%,$2),$d))

# functions used to determine various properties of library
# called with library path. Needed because of differences between library
# layouts in arduino 1.0.x and 1.5.x.
# Assuming new 1.5.x layout when there is "src" subdirectory in main directory
# and library.properties file

# Gets include flags for library
get_library_includes = $(if $(and $(wildcard $(1)/src), $(wildcard $(1)/library.properties)), \
                           -I$(1)/src, \
                           $(addprefix -I,$(1) $(wildcard $(1)/utility)))

# Gets all sources with given extension (param2) for library (path = param1)
# for old (1.0.x) layout looks in . and "utility" directories
# for new (1.5.x) layout looks in src and recursively its subdirectories
get_library_files  = $(if $(and $(wildcard $(1)/src), $(wildcard $(1)/library.properties)), \
                        $(call rwildcard,$(1)/src/,*.$(2)), \
                        $(wildcard $(1)/*.$(2) $(1)/utility/*.$(2)))

# General arguments
PROJ_LIBS      := $(sort $(wildcard $(patsubst %,$(PROJ_LIBS_PATH)/%,$(ARDUINO_LIBS))))
PROJ_LIB_NAMES := $(patsubst $(PROJ_LIBS_PATH)/%,%,$(PROJ_LIBS))

# Let user libraries override system ones.
SYS_LIBS       := $(sort $(wildcard $(patsubst %,$(ARDUINO_LIB_PATH)/%,$(filter-out $(PROJ_LIB_NAMES),$(ARDUINO_LIBS)))))
SYS_LIB_NAMES  := $(patsubst $(ARDUINO_LIB_PATH)/%,%,$(SYS_LIBS))

ifdef ARDUINO_PLATFORM_LIB_PATH
    PLATFORM_LIBS       := $(sort $(wildcard $(patsubst %,$(ARDUINO_PLATFORM_LIB_PATH)/%,$(filter-out $(PROJ_LIB_NAMES),$(ARDUINO_LIBS)))))
    PLATFORM_LIB_NAMES  := $(patsubst $(ARDUINO_PLATFORM_LIB_PATH)/%,%,$(PLATFORM_LIBS))
endif

# Error here if any are missing.
LIBS_NOT_FOUND = $(filter-out $(PROJ_LIB_NAMES) $(SYS_LIB_NAMES) $(PLATFORM_LIB_NAMES),$(ARDUINO_LIBS))
ifneq (,$(strip $(LIBS_NOT_FOUND)))
    ifdef ARDUINO_PLATFORM_LIB_PATH
        $(error The following libraries specified in ARDUINO_LIBS could not be found (searched PROJ_LIBS_PATH, ARDUINO_LIB_PATH and ARDUINO_PLATFORM_LIB_PATH): $(LIBS_NOT_FOUND))
    else
        $(error The following libraries specified in ARDUINO_LIBS could not be found (searched PROJ_LIBS_PATH and ARDUINO_LIB_PATH): $(LIBS_NOT_FOUND))
    endif
endif

SYS_INCLUDES        := $(foreach lib, $(SYS_LIBS),  $(call get_library_includes,$(lib)))
PROJ_INCLUDES       := $(foreach lib, $(PROJ_LIBS), $(call get_library_includes,$(lib)))
LIB_C_SRCS          := $(foreach lib, $(SYS_LIBS),  $(call get_library_files,$(lib),c))
LIB_CPP_SRCS        := $(foreach lib, $(SYS_LIBS),  $(call get_library_files,$(lib),cpp))
LIB_AS_SRCS         := $(foreach lib, $(SYS_LIBS),  $(call get_library_files,$(lib),S))
PROJ_LIB_CPP_SRCS   := $(foreach lib, $(PROJ_LIBS), $(call get_library_files,$(lib),cpp))
PROJ_LIB_C_SRCS     := $(foreach lib, $(PROJ_LIBS), $(call get_library_files,$(lib),c))
PROJ_LIB_AS_SRCS    := $(foreach lib, $(PROJ_LIBS), $(call get_library_files,$(lib),S))
LIB_OBJS            = $(patsubst $(ARDUINO_LIB_PATH)/%.c,$(OBJDIR)/libs/%.c.o,$(LIB_C_SRCS)) \
                      $(patsubst $(ARDUINO_LIB_PATH)/%.cpp,$(OBJDIR)/libs/%.cpp.o,$(LIB_CPP_SRCS)) \
                      $(patsubst $(ARDUINO_LIB_PATH)/%.S,$(OBJDIR)/libs/%.S.o,$(LIB_AS_SRCS))
PROJ_LIB_OJS       = $(patsubst $(PROJ_LIBS_PATH)/%.cpp,$(OBJDIR)/projlibs/%.cpp.o,$(PROJ_LIB_CPP_SRCS)) \
                      $(patsubst $(PROJ_LIBS_PATH)/%.c,$(OBJDIR)/projlibs/%.c.o,$(PROJ_LIB_C_SRCS)) \
                      $(patsubst $(PROJ_LIBS_PATH)/%.S,$(OBJDIR)/projlibs/%.S.o,$(PROJ_LIB_AS_SRCS))

ifdef ARDUINO_PLATFORM_LIB_PATH
    PLATFORM_INCLUDES     := $(foreach lib, $(PLATFORM_LIBS), $(call get_library_includes,$(lib)))
    PLATFORM_LIB_CPP_SRCS := $(foreach lib, $(PLATFORM_LIBS), $(call get_library_files,$(lib),cpp))
    PLATFORM_LIB_C_SRCS   := $(foreach lib, $(PLATFORM_LIBS), $(call get_library_files,$(lib),c))
    PLATFORM_LIB_AS_SRCS  := $(foreach lib, $(PLATFORM_LIBS), $(call get_library_files,$(lib),S))
    PLATFORM_LIB_OBJS     := $(patsubst $(ARDUINO_PLATFORM_LIB_PATH)/%.cpp,$(OBJDIR)/platformlibs/%.cpp.o,$(PLATFORM_LIB_CPP_SRCS)) \
                             $(patsubst $(ARDUINO_PLATFORM_LIB_PATH)/%.c,$(OBJDIR)/platformlibs/%.c.o,$(PLATFORM_LIB_C_SRCS)) \
                             $(patsubst $(ARDUINO_PLATFORM_LIB_PATH)/%.S,$(OBJDIR)/platformlibs/%.S.o,$(PLATFORM_LIB_AS_SRCS))
endif

# Dependency files
DEPS = $(LOCAL_OBJS:.o=.d) $(LIB_OBJS:.o=.d) $(PLATFORM_OBJS:.o=.d) $(PROJ_LIB_OJS:.o=.d) $(CORE_OBJS:.o=.d)

$(call show_config_variable,OPTIMIZATION_LEVEL,[DEFAULT])

# SoftwareSerial requires -Os (some delays are tuned for this optimization level)
%SoftwareSerial.cpp.o : OPTIMIZATION_FLAGS = -Os
%Uart.cpp.o : OPTIMIZATION_FLAGS = -Os

$(call show_config_variable,MCU_FLAG_NAME,[DEFAULT])

CPPFLAGS += -$(MCU_FLAG_NAME)=$(MCU) -DF_CPU=$(F_CPU) -DARDUINO=$(ARDUINO_VERSION_SHORT) -DARDUINO_$(BOARD) $(ARDUINO_ARCH_FLAG) \
    "-DARDUINO_BOARD=\"$(BOARD)\"" "-DARDUINO_VARIANT=\"$(VARIANT)\"" \
    -I$(ARDUINO_CORE_PATH) -I$(ARDUINO_CORE_PATH)/api -I$(ARDUINO_VAR_PATH)/$(VARIANT) \
    $(SYS_INCLUDES) $(PLATFORM_INCLUDES) $(PROJ_INCLUDES) -Wall -ffunction-sections \
    -fdata-sections

# PROG_TYPES_COMPAT is enabled by default for compatibility with the Arduino IDE.
# By placing it before the user-provided CPPFLAGS rather than after, we allow the
# the user to disable it if they like, by adding the negation of the flag
# (-U__PROG_TYPES_COMPAT__) to the user-provided CPPFLAGS.
CPPFLAGS := -D__PROG_TYPES_COMPAT__ $(CPPFLAGS)

ifdef DEBUG
    OPTIMIZATION_FLAGS= $(DEBUG_FLAGS)
else
    OPTIMIZATION_FLAGS = -O$(OPTIMIZATION_LEVEL)
endif

CPPFLAGS += $(OPTIMIZATION_FLAGS)

# USB IDs for the Caterina devices like leonardo or micro
CPPFLAGS += -DUSB_VID=$(USB_VID) -DUSB_PID=$(USB_PID)
ifdef USB_PRODUCT
    CPPFLAGS += -DUSB_PRODUCT='$(USB_PRODUCT)' -DUSB_MANUFACTURER='$(USB_MANUFACTURER)'
endif

# $(TOOL_PREFIX)-gcc version that we can do maths on
CC_VERNUM = $(shell $(CC) -dumpversion | sed 's/\.//g')

# moved from above so we can find version-dependant ar
ifeq ($(TOOL_PREFIX), avr)
    ifeq ($(shell expr $(CC_VERNUM) '>' 490), 1)
        AR_NAME := $(TOOL_PREFIX)-gcc-ar
    else
        AR_NAME := $(TOOL_PREFIX)-ar
    endif
endif

ifeq ($(shell expr $(CC_VERNUM) '>' 490), 1)
    CFLAGS_STD = -std=gnu11
else
    CFLAGS_STD =
endif
$(call show_config_variable,CFLAGS_STD,[DEFAULT])

ifeq ($(shell expr $(CC_VERNUM) '>' 490), 1)
    CXXFLAGS_STD = -std=gnu++11
else
    CXXFLAGS_STD =
endif
$(call show_config_variable,CXXFLAGS_STD,[DEFAULT])

CFLAGS += $(CFLAGS_STD)
CXXFLAGS += -fpermissive -fno-exceptions $(CXXFLAGS_STD)
ASFLAGS += -x assembler-with-cpp
DIAGNOSTICS_COLOR_WHEN ?= always

# Flags for AVR
ifeq ($(findstring avr, $(strip $(CC_NAME))), avr)
    ifeq ($(shell expr $(CC_VERNUM) '>' 490), 1)
        ASFLAGS  += -flto
        CXXFLAGS += -fno-threadsafe-statics -flto -fno-devirtualize -fdiagnostics-color=$(DIAGNOSTICS_COLOR_WHEN)
        CFLAGS   += -flto -fno-fat-lto-objects -fdiagnostics-color=$(DIAGNOSTICS_COLOR_WHEN)
        LDFLAGS += -flto -fuse-linker-plugin
    endif
# Flags for ARM (most set in Sam.mk)
else
    ifeq ($(shell expr $(CC_VERNUM) '>' 490), 1)
        CXXFLAGS += -fdiagnostics-color=$(DIAGNOSTICS_COLOR_WHEN)
        CFLAGS   += -fdiagnostics-color=$(DIAGNOSTICS_COLOR_WHEN)
    endif
endif

LDFLAGS += -$(MCU_FLAG_NAME)=$(MCU) -Wl,--gc-sections -O$(OPTIMIZATION_LEVEL)
SIZEFLAGS ?= --mcu=$(MCU) -C

MONITOR_PORT ?= $(ARDUINO_PORT)

ifneq ($(strip $(MONITOR_PORT)),)
	DEVICE_PATH = $(MONITOR_PORT)
    $(call show_config_variable,DEVICE_PATH,[COMPUTED],(from MONITOR_PORT))
else
    # If no port is specified, try to guess it from wildcards.
    # Will only work if the Arduino is the only/first device matched.
    DEVICE_PATH = $(firstword $(wildcard \
		/dev/ttyACM? /dev/ttyUSB? /dev/tty.usbserial* /dev/tty.usbmodem* /dev/tty.wchusbserial*))
    $(call show_config_variable,DEVICE_PATH,[AUTODETECTED])
endif

# Returns the Arduino port (first wildcard expansion) if it exists, otherwise it errors.
get_monitor_port = $(if $(wildcard $(DEVICE_PATH)),$(firstword $(wildcard $(DEVICE_PATH))),$(error Arduino port $(DEVICE_PATH) not found!))

# Command for avr_size: do $(call avr_size,elffile,hexfile)
ifneq (,$(findstring AVR,$(shell $(SIZE) --help)))
    # We have a patched version of binutils that mentions AVR - pass the MCU
    # and the elf to get nice output.
    avr_size = $(SIZE) $(SIZEFLAGS) --format=avr $(1)
    $(call show_config_info,Size utility: AVR-aware for enhanced output,[AUTODETECTED])
else
    ifeq ($(findstring sam, $(strip $(ARCHITECTURE))), sam)
       avr_size = $(SIZE) $(SIZEFLAGS) $(1)
       $(call show_config_info,Size utility: ARM,[AUTODETECTED])
    else
       # We have a plain-old binutils version - just give it the hex.
       avr_size = $(SIZE) $(2)
       $(call show_config_info,Size utility: Basic (not AVR-aware),[AUTODETECTED])
    endif
endif

ifneq (,$(strip $(ARDUINO_LIBS)))
    $(call arduino_output,-)
    $(call show_config_info,ARDUINO_LIBS =)
endif

ifneq (,$(strip $(PROJ_LIB_NAMES)))
    $(foreach lib,$(PROJ_LIB_NAMES),$(call show_config_info,  $(lib),[USER]))
endif

ifneq (,$(strip $(SYS_LIB_NAMES)))
    $(foreach lib,$(SYS_LIB_NAMES),$(call show_config_info,  $(lib),[SYSTEM]))
endif

ifneq (,$(strip $(PLATFORM_LIB_NAMES)))
    $(foreach lib,$(PLATFORM_LIB_NAMES),$(call show_config_info,  $(lib),[PLATFORM]))
endif

$(call show_config_variable,BOOTLOADER_PARENT,[DEFAULT])

########################################################################
# Tools version info
CC_VERSION := $(shell $(CC) -dumpversion)
$(call show_config_variable,CC_VERSION,[COMPUTED],($(CC_NAME)))

# end of config output
$(call show_separator)

# Implicit rules for building everything (needed to get everything in
# the right directory)
#
# Rather than mess around with VPATH there are quasi-duplicate rules
# here for building e.g. a system C++ file and a local C++
# file. Besides making things simpler now, this would also make it
# easy to change the build options in future

# library sources
$(OBJDIR)/libs/%.c.o: $(ARDUINO_LIB_PATH)/%.c
	@$(MKDIR) $(dir $@)
	$(CC) -MMD -c $(CPPFLAGS) $(CFLAGS) $< -o $@

$(OBJDIR)/libs/%.cpp.o: $(ARDUINO_LIB_PATH)/%.cpp
	@$(MKDIR) $(dir $@)
	$(CXX) -MMD -c $(CPPFLAGS) $(CXXFLAGS) $< -o $@

$(OBJDIR)/libs/%.S.o: $(ARDUINO_LIB_PATH)/%.S
	@$(MKDIR) $(dir $@)
	$(CC) -MMD -c $(CPPFLAGS) $(ASFLAGS) $< -o $@

$(OBJDIR)/platformlibs/%.c.o: $(ARDUINO_PLATFORM_LIB_PATH)/%.c
	@$(MKDIR) $(dir $@)
	$(CC) -MMD -c $(CPPFLAGS) $(CFLAGS) $< -o $@

$(OBJDIR)/platformlibs/%.cpp.o: $(ARDUINO_PLATFORM_LIB_PATH)/%.cpp
	@$(MKDIR) $(dir $@)
	$(CXX) -MMD -c $(CPPFLAGS) $(CXXFLAGS) $< -o $@

$(OBJDIR)/platformlibs/%.S.o: $(ARDUINO_PLATFORM_LIB_PATH)/%.S
	@$(MKDIR) $(dir $@)
	$(CC) -MMD -c $(CPPFLAGS) $(ASFLAGS) $< -o $@

$(OBJDIR)/projlibs/%.cpp.o: $(PROJ_LIBS_PATH)/%.cpp
	@$(MKDIR) $(dir $@)
	$(CXX) -MMD -c $(CPPFLAGS) $(CXXFLAGS) $< -o $@

$(OBJDIR)/projlibs/%.c.o: $(PROJ_LIBS_PATH)/%.c
	@$(MKDIR) $(dir $@)
	$(CC) -MMD -c $(CPPFLAGS) $(CFLAGS) $< -o $@

$(OBJDIR)/projlibs/%.S.o: $(PROJ_LIBS_PATH)/%.S
	@$(MKDIR) $(dir $@)
	$(CC) -MMD -c $(CPPFLAGS) $(ASFLAGS) $< -o $@

ifdef COMMON_DEPS
    COMMON_DEPS := $(COMMON_DEPS) $(MAKEFILE_LIST)
else
    COMMON_DEPS := $(MAKEFILE_LIST)
endif

# normal local sources
$(OBJDIR)/%.c.o: %.c $(COMMON_DEPS) | $(OBJDIR)
	@$(MKDIR) $(dir $@)
	$(CC) -MMD -c $(CPPFLAGS) $(CFLAGS) $< -o $@

$(OBJDIR)/%.cc.o: %.cc $(COMMON_DEPS) | $(OBJDIR)
	@$(MKDIR) $(dir $@)
	$(CXX) -MMD -c $(CPPFLAGS) $(CXXFLAGS) $< -o $@

$(OBJDIR)/%.cpp.o: %.cpp $(COMMON_DEPS) | $(OBJDIR)
	@$(MKDIR) $(dir $@)
	$(CXX) -MMD -c $(CPPFLAGS) $(CXXFLAGS) $< -o $@

$(OBJDIR)/%.S.o: %.S $(COMMON_DEPS) | $(OBJDIR)
	@$(MKDIR) $(dir $@)
	$(CC) -MMD -c $(CPPFLAGS) $(ASFLAGS) $< -o $@

$(OBJDIR)/%.s.o: %.s $(COMMON_DEPS) | $(OBJDIR)
	@$(MKDIR) $(dir $@)
	$(CC) -c $(CPPFLAGS) $(ASFLAGS) $< -o $@


# generated assembly
$(OBJDIR)/%.s: %.pde $(COMMON_DEPS) | $(OBJDIR)
	@$(MKDIR) $(dir $@)
	$(CXX) -x c++ -include $(ARDUINO_HEADER) -MMD -S -fverbose-asm $(CPPFLAGS) $(CXXFLAGS) $< -o $@

$(OBJDIR)/%.s: %.ino $(COMMON_DEPS) | $(OBJDIR)
	@$(MKDIR) $(dir $@)
	$(CXX) -x c++ -include $(ARDUINO_HEADER) -MMD -S -fverbose-asm $(CPPFLAGS) $(CXXFLAGS) $< -o $@

$(OBJDIR)/%.s: %.cpp $(COMMON_DEPS) | $(OBJDIR)
	@$(MKDIR) $(dir $@)
	$(CXX) -x c++ -MMD -S -fverbose-asm $(CPPFLAGS) $(CXXFLAGS) $< -o $@

# core files
$(OBJDIR)/core/%.c.o: $(ARDUINO_CORE_PATH)/%.c $(COMMON_DEPS) | $(OBJDIR)
	@$(MKDIR) $(dir $@)
	$(CC) -MMD -c $(CPPFLAGS) $(CFLAGS) $< -o $@

$(OBJDIR)/core/%.cpp.o: $(ARDUINO_CORE_PATH)/%.cpp $(COMMON_DEPS) | $(OBJDIR)
	@$(MKDIR) $(dir $@)
	$(CXX) -MMD -c $(CPPFLAGS) $(CXXFLAGS) $< -o $@

$(OBJDIR)/core/%.S.o: $(ARDUINO_CORE_PATH)/%.S $(COMMON_DEPS) | $(OBJDIR)
	@$(MKDIR) $(dir $@)
	$(CC) -MMD -c $(CPPFLAGS) $(ASFLAGS) $< -o $@

# sam core files
$(OBJDIR)/core/%.c.o: $(SAM_CORE_PATH)/%.c $(COMMON_DEPS) | $(OBJDIR)
	@$(MKDIR) $(dir $@)
	$(CC) -MMD -c $(CPPFLAGS) $(CFLAGS) $< -o $@

$(OBJDIR)/core/%.cpp.o: $(SAM_CORE_PATH)/%.cpp $(COMMON_DEPS) | $(OBJDIR)
	@$(MKDIR) $(dir $@)
	$(CXX) -MMD -c $(CPPFLAGS) $(CXXFLAGS) $< -o $@

$(OBJDIR)/core/%.S.o: $(SAM_CORE_PATH)/%.S $(COMMON_DEPS) | $(OBJDIR)
	@$(MKDIR) $(dir $@)
	$(CC) -MMD -c $(CPPFLAGS) $(ASFLAGS) $< -o $@

# due specific sources from sam core as doesn't core doesn't have SystemInit startup file
$(OBJDIR)/core/%.c.o: $(SAM_LIBSAM_PATH)/source/%.c $(COMMON_DEPS) | $(OBJDIR)
	@$(MKDIR) $(dir $@)
	$(CC) -MMD -c $(CPPFLAGS) $(CFLAGS) $< -o $@

$(OBJDIR)/core/%.c.o: $(SAM_SYSTEM_PATH)/source/%.c $(COMMON_DEPS) | $(OBJDIR)
	@$(MKDIR) $(dir $@)
	$(CC) -MMD -c $(CPPFLAGS) $(CFLAGS) $< -o $@

# various object conversions
$(OBJDIR)/%.bin: $(OBJDIR)/%.elf $(COMMON_DEPS)
	@$(MKDIR) $(dir $@)
	-$(OBJCOPY) -O binary $< $@

$(OBJDIR)/%.hex: $(OBJDIR)/%.elf $(COMMON_DEPS)
	@$(MKDIR) $(dir $@)
	$(OBJCOPY) -O ihex -R .eeprom $< $@
	@$(ECHO) '\n'
	$(call avr_size,$<,$@)
ifneq ($(strip $(HEX_MAXIMUM_SIZE)),)
	@if [ `$(SIZE) $@ | awk 'FNR == 2 {print $$2}'` -le $(HEX_MAXIMUM_SIZE) ]; then touch $@.sizeok; fi
else
	@$(ECHO) "Maximum flash memory of $(BOARD_TAG) is not specified. Make sure the size of $@ is less than $(BOARD_TAG)\'s flash memory"
	@touch $@.sizeok
endif

$(OBJDIR)/%.eep: $(OBJDIR)/%.elf $(COMMON_DEPS)
	@$(MKDIR) $(dir $@)
	-$(OBJCOPY) -j .eeprom --set-section-flags=.eeprom='alloc,load' \
		--no-change-warnings --change-section-lma .eeprom=0 -O ihex $< $@

$(OBJDIR)/%.lss: $(OBJDIR)/%.elf $(COMMON_DEPS)
	@$(MKDIR) $(dir $@)
	$(OBJDUMP) -h --source --demangle --wide $< > $@

$(OBJDIR)/%.sym: $(OBJDIR)/%.elf $(COMMON_DEPS)
	@$(MKDIR) $(dir $@)
	$(NM) --size-sort --demangle --reverse-sort --line-numbers $< > $@

########################################################################
# Ctags

# ctags command: append, flags unsort (as will be sorted after) and specify filename
CTAGS_CMD = $(CTAGS_EXEC) $(CTAGS_OPTS) -auf

########################################################################
# Avrdude

AVRDUDE = $(ARDUINO_DIR)/tools/avrdude/$(shell /bin/ls --color=never -1 $(ARDUINO_DIR)/tools/avrdude | sort -r | xargs | awk '{print $$1}')/bin/avrdude

AVRDUDE_OPTS = -q -V

AVRDUDE_MCU = $(MCU)

AVRDUDE_COM_OPTS = $(AVRDUDE_OPTS) -p $(AVRDUDE_MCU)
ifdef AVRDUDE_CONF
    AVRDUDE_COM_OPTS += -C $(AVRDUDE_CONF)
endif

# -D - Disable auto erase for flash memory
# Note: -D is needed for Mega boards.
#       (See https://github.com/sudar/Arduino-Makefile/issues/114#issuecomment-25011005)
ifeq ($(AVRDUDE_AUTOERASE_FLASH), yes)
else
    AVRDUDE_ARD_OPTS = -D
endif
AVRDUDE_ARD_OPTS += -c $(AVRDUDE_ARD_PROGRAMMER) -b $(AVRDUDE_ARD_BAUDRATE) -P
AVRDUDE_ARD_OPTS += $(call get_monitor_port)

AVRDUDE_UPLOAD_HEX = -U flash:w:$(TARGET_HEX):i
AVRDUDE_UPLOAD_EEP = -U eeprom:w:$(TARGET_EEP):i

########################################################################
# Explicit targets start here

all: $(TARGET_EEP) $(TARGET_BIN) $(TARGET_HEX)

# Rule to create $(OBJDIR) automatically. All rules with recipes that
# create a file within it, but do not already depend on a file within it
# should depend on this rule. They should use a "order-only
# prerequisite" (e.g., put "| $(OBJDIR)" at the end of the prerequisite
# list) to prevent remaking the target when any file in the directory
# changes.
$(OBJDIR): pre-build
	$(MKDIR) $(OBJDIR)

pre-build:
    $(call runscript_if_exists,$(PRE_BUILD_HOOK))

# copied from arduino with start-group, end-group
$(TARGET_ELF): $(LOCAL_OBJS) $(CORE_LIB) $(OTHER_OBJS)
	$(CC) $(LDFLAGS) -o $@ $(LOCAL_OBJS) $(OTHER_OBJS) $(OTHER_LIBS) $(CORE_LIB) -lc -lm $(LINKER_SCRIPTS)

$(CORE_LIB): $(CORE_OBJS) $(LIB_OBJS) $(PLATFORM_LIB_OBJS) $(PROJ_LIB_OJS)
	$(AR) rcs $@ $(CORE_OBJS) $(LIB_OBJS) $(PLATFORM_LIB_OBJS) $(PROJ_LIB_OJS)

error_on_caterina:
	$(ERROR_ON_CATERINA)

# Use submake so we can guarantee the reset happens
# before the upload, even with make -j
upload:	$(TARGET_HEX) verify_size
ifeq ($(DEVICE_PATH),)
	echo $(error Error: No Arduino device is connected)
endif
	$(MAKE) reset
	$(MAKE) do_upload

raw_upload:	$(TARGET_HEX) verify_size
	$(MAKE) error_on_caterina
	$(MAKE) do_upload

do_upload:
	$(AVRDUDE) $(AVRDUDE_COM_OPTS) $(AVRDUDE_ARD_OPTS) $(AVRDUDE_UPLOAD_HEX)

do_eeprom: $(TARGET_EEP) $(TARGET_HEX)
	$(AVRDUDE) $(AVRDUDE_COM_OPTS) $(AVRDUDE_ARD_OPTS) $(AVRDUDE_UPLOAD_EEP)

eeprom:	$(TARGET_HEX) verify_size
	$(MAKE) reset
	$(MAKE) do_eeprom

raw_eeprom:	$(TARGET_HEX) verify_size
	$(MAKE) error_on_caterina
	$(MAKE) do_eeprom

reset:
	$(call arduino_output,Resetting Arduino...)
	$(RESET_CMD)

# stty on MacOS likes -F, but on Debian it likes -f redirecting
# stdin/out appears to work but generates a spurious error on MacOS at
# least. Perhaps it would be better to just do it in perl ?
reset_stty:
	for STTYF in 'stty -F' 'stty --file' 'stty -f' 'stty <' ; \
		do $$STTYF /dev/tty >/dev/null 2>&1 && break ; \
	done ; \
	$$STTYF $(call get_monitor_port)  hupcl ; \
	(sleep 0.1 2>/dev/null || sleep 1) ; \
	$$STTYF $(call get_monitor_port) -hupcl

clean::
	$(REMOVE) $(OBJDIR)

size: $(TARGET_HEX)
	$(call avr_size,$(TARGET_ELF),$(TARGET_HEX))

show_boards:
	@$(CAT) $(BOARDS_TXT) | grep -E '^[a-zA-Z0-9_\-]+.name' | sort -uf | sed 's/.name=/:/' | column -s: -t

show_submenu:
	@$(CAT) $(BOARDS_TXT) | grep -E '[a-zA-Z0-9_\-]+.menu.(cpu|chip).[a-zA-Z0-9_\-]+=' | sort -uf | sed 's/.menu.\(cpu\|chip\)./:/' | sed 's/=/:/' | column -s: -t

monitor:
ifeq ($(notdir $(MONITOR_CMD)), putty)
ifneq ($(strip $(MONITOR_PARAMS)),)
	$(MONITOR_CMD) -serial -sercfg $(MONITOR_BAUDRATE),$(MONITOR_PARAMS) $(call get_monitor_port)
else
	$(MONITOR_CMD) -serial -sercfg $(MONITOR_BAUDRATE) $(call get_monitor_port)
endif
else ifeq ($(notdir $(MONITOR_CMD)), picocom)
	$(MONITOR_CMD) -b $(MONITOR_BAUDRATE) $(MONITOR_PARAMS) $(call get_monitor_port)
else ifeq ($(notdir $(MONITOR_CMD)), cu)
	$(MONITOR_CMD) -l $(call get_monitor_port) -s $(MONITOR_BAUDRATE)
else
	$(MONITOR_CMD) $(call get_monitor_port) $(MONITOR_BAUDRATE)
endif

debug_init:
	$(OPENOCD) $(OPENOCD_OPTS)

debug:
	$(GDB) $(GDB_OPTS)

disasm: $(OBJDIR)/$(TARGET).lss
	@$(ECHO) "The compiled ELF file has been disassembled to $(OBJDIR)/$(TARGET).lss\n\n"

symbol_sizes: $(OBJDIR)/$(TARGET).sym
	@$(ECHO) "A symbol listing sorted by their size have been dumped to $(OBJDIR)/$(TARGET).sym\n\n"

verify_size:
ifeq ($(strip $(HEX_MAXIMUM_SIZE)),)
	@$(ECHO) "\nMaximum flash memory of $(BOARD_TAG) is not specified. Make sure the size of $(TARGET_HEX) is less than $(BOARD_TAG)\'s flash memory\n\n"
endif
	@if [ ! -f $(TARGET_HEX).sizeok ]; then echo >&2 "\nThe size of the compiled binary file is greater than the $(BOARD_TAG)'s flash memory. \
See http://www.arduino.cc/en/Guide/Troubleshooting#size for tips on reducing it."; false; fi

generate_assembly: $(OBJDIR)/$(TARGET).s
	@$(ECHO) "Compiler-generated assembly for the main input source has been dumped to $(OBJDIR)/$(TARGET).s\n\n"

generated_assembly: generate_assembly
	@$(ECHO) "\"generated_assembly\" target is deprecated. Use \"generate_assembly\" target instead\n\n"

tags:
ifneq ($(words $(wildcard $(TAGS_FILE))), 0)
	rm -f $(TAGS_FILE)
endif
ifneq ($(words $(ARDUINO_LIBS)), 0)
	@$(ECHO) "Generating tags for project libraries: "
	$(CTAGS_CMD) $(TAGS_FILE) $(foreach lib, $(ARDUINO_LIBS),$(PROJ_LIBS_PATH)/$(lib)/*)
endif
	@$(ECHO) "Generating tags for Arduino core: "
	$(CTAGS_CMD) $(TAGS_FILE) $(ARDUINO_CORE_PATH)/*
	@$(ECHO) "Sorting..\n"
	@sort $(TAGS_FILE) -o $(TAGS_FILE)
	@$(ECHO) "Tag file generation complete, output: $(TAGS_FILE)\n"

help_vars:
	@$(CAT) $(ARDMK_DIR)/arduino-mk-vars.md

help:
	@$(ECHO) "\nAvailable targets:\n\
  make                   - compile the code\n\
  make upload            - upload\n\
  make raw_upload        - upload without first resetting\n\
  make eeprom            - upload the eep file\n\
  make raw_eeprom        - upload the eep file without first resetting\n\
  make clean             - remove all our dependencies\n\
  make depends           - update dependencies\n\
  make reset             - reset the Arduino by tickling DTR or changing baud\n\
                           rate on the serial port.\n\
  make show_boards       - list all the boards defined in boards.txt\n\
  make show_submenu      - list all board submenus defined in boards.txt\n\
  make monitor           - connect to the Arduino's serial port\n\
  make debug_init        - start openocd gdb server\n\
  make debug             - connect to gdb target and begin debugging\n\
  make size              - show the size of the compiled output (relative to\n\
                           resources, if you have a patched $(TOOL_PREFIX)-size).\n\
  make verify_size       - verify that the size of the final file is less than\n\
                           the capacity of the micro controller.\n\
  make symbol_sizes      - generate a .sym file containing symbols and their\n\
                           sizes.\n\
  make disasm            - generate a .lss file that contains disassembly\n\
                           of the compiled file interspersed with your\n\
                           original source code.\n\
  make generate_assembly - generate a .s file containing the compiler\n\
                           generated assembly of the main sketch.\n\
  make tags              - generate tags file including project libs and Arduino core\n\
  make help_vars         - print all variables that can be overridden\n\
  make help              - show this help\n\
"
	@$(ECHO) "Please refer to $(ARDMK_DIR)/Arduino.mk for more details.\n"

.PHONY: all upload raw_upload raw_eeprom error_on_caterina reset reset_stty \
        clean depends size show_boards monitor disasm symbol_sizes generated_assembly \
        generate_assembly verify_size help pre-build tags debug debug_init

# added - in the beginning, so that we don't get an error if the file is not present
-include $(DEPS)