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# This is a general purpose makefile for use with Arduino hardware and
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# software. It works with the arduino-1.0 software release. To download the
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# latest version of this makefile, visit the following website, where you can
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# also find more information and documentation on it's use. The following text
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# can only really be considered a reference to it's use.
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# software. It is intended to be a drop-in replacement for the Arduino IDE's
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# build system. It works with the Arduino 1.0 and 1.5 software releases, on
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# GNU/Linux and OS X. To download the latest version of this makefile visit
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# the following website where you can also find documentation on it's use.
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# (The following text can only really be considered a reference.)
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# http://ed.am/dev/make/arduino-mk
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# This makefile can be used as a drop-in replacement for the Arduino IDE's
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# build system. To use it, save arduino.mk somewhere (I keep mine at
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# ~/src/arduino.mk) and create a symlink to it in your project directory named
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# "Makefile". For example:
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# To use this makefile, copy arduino.mk in to your project directory. Or, you
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# could save it somewhere (I keep mine at ~/src/arduino.mk) and create a
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# symlink to it in your project directory, named "Makefile". For example:
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# $ ln -s ~/src/arduino.mk Makefile
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# The Arduino software (version 1.0 or later) is required. If you are using
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# Debian (or a derivative), type `apt-get install arduino`. Otherwise, you
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# will have to download the Arduino software manually from http://arduino.cc/.
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# It is suggested that you install it at ~/opt/arduino if you are unsure.
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# The Arduino software is required, version 1.0 or later, including version 1.5
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# (which is in BETA at time of release of this makefile). On GNU/Linux you can
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# probably install the software from your package manager. If you are using
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# Debian (or a derivative), try `apt-get install arduino`. Otherwise, you can
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# download the latest Arduino software manually from http://arduino.cc/. In
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# case you're unsure, install it at ~/opt/arduino (or /Applications on OS X).
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# If you downloaded the Arduino software manually and unpacked it somewhere
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# other than ~/opt/arduino, you will need to set up ARDUINODIR to be the path
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# where you unpacked it. (If unset, ARDUINODIR defaults to ~/opt/arduino and
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# then /usr/share/arduino, in that order.) You might be best to set this in
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# your ~/.profile by adding something like this:
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# export ARDUINODIR=~/somewhere/arduino-1.0
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# You will also need to set BOARD to the type of Arduino you're building for.
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# Type `make boards` for a list of acceptable values. You could set a default
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# in your ~/.profile if you want, but it is suggested that you specify this at
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# build time, especially if you work with different types of Arduino. For
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# *other* than ~/opt/arduino (or /Applications), you will need to set up the
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# ARDUINODIR environment variable to be the directory where you unpacked it.
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# (If unset, ARDUINODIR defaults to some sensible places). You could set this
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# in your ~/.profile by adding something like this:
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# export ARDUINODIR=~/somewhere/arduino-1.0.5
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# For each project, you will also need to set BOARD to the type of Arduino
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# you're building for. Type `make boards` for a list of acceptable values.
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# $ export BOARD=uno
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# You may also need to set SERIALDEV if it is not detected correctly.
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# Note that if you're using the newer 1.5 Arduino software and the board you
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# want to use is availble with different processors, you will also need to
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# specify one. For example:
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# $ export BOARD=mini.atmega328
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# You may also need to set SERIALDEV if your Arduino is not detected correctly.
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# The presence of a .ino (or .pde) file causes the arduino.mk to automatically
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# determine values for SOURCES, TARGET and LIBRARIES. Any .c, .cc and .cpp
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# files in the project directory (or any "util" or "utility" subdirectories)
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# are automatically included in the build and are scanned for Arduino libraries
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# that have been #included. Note, there can only be one .ino (or .pde) file.
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# determine values for SOURCES, TARGET and which libraries to pull-in to the
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# build (although you can still override thius by setting LIBRARIES). Any .c,
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# .cc and .cpp files in the project directory (or any "util" or "utility"
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# subdirectories) are automatically included in the build and are scanned for
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# Arduino libraries that have been #included. Note, there can only be one .ino
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# (or .pde) file in a project directory and if you want to be compatible with
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# the Arduino IDE, it should be called the same as the directory name.
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# Alternatively, if you want to manually specify build variables, create a
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# Makefile that defines SOURCES and LIBRARIES and then includes arduino.mk.
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# (There is no need to define TARGET). Here is an example Makefile:
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# (You don't need to define TARGET). You can also specify the BOARD here, if
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# the project has a specific one. Here is an example Makefile:
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# SOURCES := main.cc other.cc
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# LIBRARIES := EEPROM
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# include ~/src/arduino.mk
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# Here is a complete list of configuration parameters:
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# Here is a complete list of environment variables that affect the build:
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# ARDUINODIR The path where the Arduino software is installed on your system.
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# ARDUINODIR The directory where the Arduino software resides on your system.
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# ARDUINOCONST The Arduino software version, as an integer, used to define the
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# ARDUINO version constant. This defaults to 100 if undefined.
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# AVRDUDECONF The avrdude.conf to use. If undefined, this defaults to a guess
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# based on where the avrdude in use is. If empty, no avrdude.conf
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# is passed to avrdude (to the system default is used).
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# based on where avrdude is. If set empty, no avrdude.conf is
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# passed to avrdude (so the system default is used).
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# AVRDUDEFLAGS Specify any additional flags for avrdude. The usual flags,
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# required to build the project, will be appended to this.
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# monitor Start `screen` on the serial device. This is meant to be an
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# equivalent to the Arduino serial monitor.
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# size Displays size information about the bulit target.
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# size Displays size information about the built target.
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# bootloader Burns the bootloader for your board to it.
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# <file> Builds the specified file, either an object file or the target,
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# from those that that would be built for the project.
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#_______________________________________________________________________________
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# default arduino software directory, check software exists
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# default arduino software directory
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ifndef ARDUINODIR
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ARDUINODIR := $(firstword $(wildcard ~/opt/arduino /usr/share/arduino))
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ARDUINODIR := $(firstword $(wildcard ~/opt/arduino /usr/share/arduino \
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/Applications/Arduino.app/Contents/Resources/Java \
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$(HOME)/Applications/Arduino.app/Contents/Resources/Java))
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ifeq "$(wildcard $(ARDUINODIR)/hardware/arduino/boards.txt)" ""
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# check arduino software exists and determine available backends
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ifneq "" "$(wildcard $(ARDUINODIR)/hardware/arduino/boards.txt)"
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else ifneq "" "$(wildcard $(ARDUINODIR)/hardware/arduino/avr/boards.txt)"
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ARDUINOBACKENDS := /avr /sam
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$(error ARDUINODIR is not set correctly; arduino software not found)
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# default arduino version
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# default path for avr tools
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AVRTOOLSPATH := $(subst :, , $(PATH))
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AVRTOOLSPATH += $(ARDUINODIR)/hardware/tools
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AVRTOOLSPATH += $(ARDUINODIR)/hardware/tools/avr/bin
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# default path to find libraries
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LIBRARYPATH ?= libraries libs $(ARDUINODIR)/libraries
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ifneq "$(MAKECMDGOALS)" "boards"
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ifneq "$(MAKECMDGOALS)" "clean"
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$(error BOARD is unset. Type 'make boards' to see possible values)
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# obtain board parameters from the arduino boards.txt file(s)
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BOARDSFILES := $(foreach dir, $(ARDUINOBACKENDS), \
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$(ARDUINODIR)/hardware/arduino$(dir)/boards.txt)
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readboardsparam = $(firstword \
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$(shell sed -ne "s/^menu\\.cpu\\.$(BOARD)\\.$(1)=\(.*\)/\1/Ip" \
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$(shell sed -ne "s/^$(basename $(BOARD))\\.$(1)=\(.*\)/\1/Ip" \
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BOARD_BUILD_MCU := $(call readboardsparam,build.mcu)
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BOARD_BUILD_FCPU := $(call readboardsparam,build.f_cpu)
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BOARD_BUILD_VARIANT := $(call readboardsparam,build.variant)
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BOARD_BUILD_CORE := $(call readboardsparam,build.core)
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BOARD_UPLOAD_SPEED := $(call readboardsparam,upload.speed)
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BOARD_UPLOAD_PROTOCOL := $(call readboardsparam,upload.protocol)
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BOARD_USB_VID := $(call readboardsparam,build.vid)
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BOARD_USB_PID := $(call readboardsparam,build.pid)
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BOARD_BOOTLOADER_UNLOCK := $(call readboardsparam,bootloader.unlock_bits)
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BOARD_BOOTLOADER_LOCK := $(call readboardsparam,bootloader.lock_bits)
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BOARD_BOOTLOADER_LFUSES := $(call readboardsparam,bootloader.low_fuses)
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BOARD_BOOTLOADER_HFUSES := $(call readboardsparam,bootloader.high_fuses)
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BOARD_BOOTLOADER_EFUSES := $(call readboardsparam,bootloader.extended_fuses)
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BOARD_BOOTLOADER_PATH := $(call readboardsparam,bootloader.path)
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BOARD_BOOTLOADER_FILE := $(call readboardsparam,bootloader.file)
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ifeq "$(BOARD_BUILD_MCU)" ""
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ifneq "$(MAKECMDGOALS)" "boards"
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ifneq "$(MAKECMDGOALS)" "clean"
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$(error BOARD is invalid. Type 'make boards' to see possible values)
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# obtain preferences from the IDE's preferences.txt
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PREFERENCESFILE := $(firstword $(wildcard \
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$(HOME)/.arduino/preferences.txt $(HOME)/Library/Arduino/preferences.txt))
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ifneq "$(PREFERENCESFILE)" ""
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readpreferencesparam = $(shell sed -ne "s/$(1)=\(.*\)/\1/p" $(PREFERENCESFILE))
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SKETCHBOOKDIR := $(call readpreferencesparam,sketchbook.path)
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# arduino directories
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ARDUINOBACKENDDIR := $(strip $(foreach dir, $(ARDUINOBACKENDS), \
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$(if $(shell grep ^$(basename $(BOARD))\\.name \
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$(ARDUINODIR)/hardware/arduino$(dir)/boards.txt), \
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$(ARDUINODIR)/hardware/arduino$(dir))))
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ARDUINOCOREDIR := $(ARDUINOBACKENDDIR)/cores/$(BOARD_BUILD_CORE)
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# default library path (places to look for libraries)
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LIBRARYPATH ?= libraries libs $(SKETCHBOOKDIR)/libraries \
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$(ARDUINODIR)/libraries $(ARDUINOBACKENDDIR)/libraries
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INOFILE := $(wildcard *.ino *.pde)
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$(error There is more than one .pde or .ino file in this directory!)
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# automatically determine sources and targeet
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# automatically determine sources and target
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TARGET := $(basename $(INOFILE))
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SOURCES := $(INOFILE) \
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$(wildcard *.c *.cc *.cpp *.C) \
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$(wildcard $(addprefix util/, *.c *.cc *.cpp *.C)) \
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$(wildcard $(addprefix utility/, *.c *.cc *.cpp *.C))
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# automatically determine included libraries
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LIBRARIES := $(filter $(notdir $(wildcard $(addsuffix /*, $(LIBRARYPATH)))), \
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$(shell sed -ne "s/^ *\# *include *[<\"]\(.*\)\.h[>\"]/\1/p" $(SOURCES)))
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# no serial device? make a poor attempt to detect an arduino
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ifeq "$(SERIALDEV)" ""
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SERIALDEV := $(firstword $(wildcard \
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/dev/ttyACM? /dev/ttyUSB? /dev/tty.usbserial* /dev/tty.usbmodem*))
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$(wildcard *.c *.cc *.cpp *.C *.s *.S) \
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$(wildcard $(addprefix util/, *.c *.cc *.cpp *.C *.s *.S)) \
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$(wildcard $(addprefix utility/, *.c *.cc *.cpp *.C *.s *.S))
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# automatically determine library directories (to pull library sources in from)
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# by matching included headers in poject sources to headers that exist in the
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# roots of any library directories, giving priority to libraries in the order
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# they're in LIBRARYPATH, and then to the alphabetically-greater named library
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# (this is a really stupid way of doing it, but it's how the IDE works -- if
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# it's causing problems, you can override it by setting LIBRARIES manually)
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$(shell sed -nre "s/^\s*\#\s*include\s*[<\"](\S+\.h)[>\"].*/\1/p" \
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reverse = $(if $(1),$(call reverse,$(wordlist 2,$(words $(1)),$(1)))) \
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LIBRARYHEADERS := $(foreach dir, $(LIBRARYPATH), \
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$(call reverse, $(sort $(wildcard $(dir)/*))))
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LIBRARYHEADERS := $(foreach dir, $(LIBRARYHEADERS), $(wildcard $(dir)/*.h))
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LIBRARYDIRS := $(foreach hdr, $(INCLUDEDHEADERS), $(patsubst %/$(hdr), %, \
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$(firstword $(filter %/$(hdr), $(LIBRARYHEADERS)))))
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# expand LIBRARYDIRS (initialised from LIBRARIES, if specified)
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ifneq "$(LIBRARIES)" ""
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LIBRARYDIRS := $(foreach lib, $(LIBRARIES), \
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$(firstword $(wildcard $(addsuffix /$(lib), $(LIBRARYPATH)))))
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LIBRARYDIRS := $(LIBRARYDIRS) $(addsuffix /utility, $(LIBRARYDIRS))
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TARGET := $(if $(TARGET),$(TARGET),a.out)
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OBJECTS := $(addsuffix .o, $(basename $(SOURCES)))
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DEPFILES := $(patsubst %, .dep/%.dep, $(SOURCES))
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ARDUINOLIB := .lib/arduino.a
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ARDUINOLIBOBJS := $(foreach dir, $(ARDUINOCOREDIR) $(LIBRARYDIRS), \
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$(patsubst %, .lib/%.o, $(wildcard $(addprefix $(dir)/, \
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*.c *.cc *.cpp *.C *.s *.S))))
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BOOTLOADERHEX := $(addprefix \
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$(ARDUINOBACKENDDIR)/bootloaders/$(BOARD_BOOTLOADER_PATH)/, \
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$(BOARD_BOOTLOADER_FILE))
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findsoftware = $(firstword $(wildcard $(addsuffix /$(1), $(AVRTOOLSPATH))))
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BUILDTOOLSPATH ?= $(subst :, , $(PATH)) $(ARDUINODIR)/hardware/tools \
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$(ARDUINODIR)/hardware/tools/avr/bin
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findsoftware = $(firstword $(wildcard $(addsuffix /$(1), $(BUILDTOOLSPATH))))
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CC := $(call findsoftware,avr-gcc)
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CXX := $(call findsoftware,avr-g++)
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LD := $(call findsoftware,avr-ld)
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AR := $(call findsoftware,avr-ar)
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AS := $(call findsoftware,avr-as)
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OBJCOPY := $(call findsoftware,avr-objcopy)
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AVRDUDE := $(call findsoftware,avrdude)
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AVRSIZE := $(call findsoftware,avr-size)
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ARDUINOCOREDIR := $(ARDUINODIR)/hardware/arduino/cores/arduino
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LIBRARYDIRS := $(foreach lib, $(LIBRARIES), \
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$(firstword $(wildcard $(addsuffix /$(lib), $(LIBRARYPATH)))))
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LIBRARYDIRS += $(addsuffix /utility, $(LIBRARYDIRS))
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# default arduino version
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ARDUINOCONST ?= $(if $(filter /, $(ARDUINOBACKENDS)),100,150)
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TARGET := $(if $(TARGET),$(TARGET),a.out)
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OBJECTS := $(addsuffix .o, $(basename $(SOURCES)))
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DEPFILES := $(patsubst %, .dep/%.dep, $(SOURCES))
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ARDUINOLIB := .lib/arduino.a
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ARDUINOLIBOBJS := $(foreach dir, $(ARDUINOCOREDIR) $(LIBRARYDIRS), \
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$(patsubst %, .lib/%.o, $(wildcard $(addprefix $(dir)/, *.c *.cpp))))
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# default serial device to a poor guess (something that might be an arduino)
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SERIALDEV := $(firstword $(wildcard \
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/dev/ttyACM? /dev/ttyUSB? /dev/tty.usbserial* /dev/tty.usbmodem*))
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# avrdude confifuration
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ifeq "$(AVRDUDECONF)" ""
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ifneq "$(MAKECMDGOALS)" "boards"
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ifneq "$(MAKECMDGOALS)" "clean"
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$(error BOARD is unset. Type 'make boards' to see possible values)
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# obtain board parameters from the arduino boards.txt file
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BOARDS_FILE := $(ARDUINODIR)/hardware/arduino/boards.txt
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$(shell sed -ne "s/$(BOARD).build.mcu=\(.*\)/\1/p" $(BOARDS_FILE))
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BOARD_BUILD_FCPU := \
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$(shell sed -ne "s/$(BOARD).build.f_cpu=\(.*\)/\1/p" $(BOARDS_FILE))
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BOARD_BUILD_VARIANT := \
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$(shell sed -ne "s/$(BOARD).build.variant=\(.*\)/\1/p" $(BOARDS_FILE))
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BOARD_UPLOAD_SPEED := \
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$(shell sed -ne "s/$(BOARD).upload.speed=\(.*\)/\1/p" $(BOARDS_FILE))
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BOARD_UPLOAD_PROTOCOL := \
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$(shell sed -ne "s/$(BOARD).upload.protocol=\(.*\)/\1/p" $(BOARDS_FILE))
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$(shell sed -ne "s/$(BOARD).build.vid=\(.*\)/\1/p" $(BOARDS_FILE))
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$(shell sed -ne "s/$(BOARD).build.pid=\(.*\)/\1/p" $(BOARDS_FILE))
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BOARD_BOOTLOADER_PATH := \
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$(shell sed -ne "s/$(BOARD).bootloader.path=\(.*\)/\1/p" $(BOARDS_FILE))
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ifeq "$(BOARD_BUILD_MCU)" ""
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ifneq "$(MAKECMDGOALS)" "boards"
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ifneq "$(MAKECMDGOALS)" "clean"
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$(error BOARD is invalid. Type 'make boards' to see possible values)
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CPPFLAGS += -Os -Wall -fno-exceptions -ffunction-sections -fdata-sections
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CPPFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums