/make/arduino-mk

#_______________________________________________________________________________

#

#                         edam's arduino makefile

#_______________________________________________________________________________

#                                                                    version 0.1

#

# Copyright (c) 2011 Tim Marston <tim@ed.am>.

#

# Permission is hereby granted, free of charge, to any person obtaining a copy

# of this software and associated documentation files (the "Software"), to deal

# in the Software without restriction, including without limitation the rights

# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

# copies of the Software, and to permit persons to whom the Software is

# furnished to do so, subject to the following conditions:

#

# The above copyright notice and this permission notice shall be included in

# all copies or substantial portions of the Software.

#

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

# SOFTWARE.

#

#_______________________________________________________________________________

#

#

# This is a general purpose makefile for use with Arduino hardware and

# software.  It works with the arduino-1.0 release and requires that software

# to be downloaded separately (see http://arduino.cc/).  To download the latest

# version of this makefile, visit the following website, where you can also

# find more information and documentation on it's use.  The following text can

# only really be considered a reference to it's use.

#

#   http://ed.am/dev/make/arduino-mk

#

# This makefile can be used as a drop-in replacement for the Arduino IDE's

# build system.  To use it, save arduino.mk somewhere (I keep mine at

# ~/src/arduino.mk) and create a symlink to it in your project directory named

# "Makefile".  For example:

#

#   $ ln -s ~/src/arduino.mk Makefile

#

# You also need to set up a couple of environment varibales. ARDUINODIR should

# be set to the path where you unpacked the arduino software from arduino.cc

# (it defaults to ~/opt/arduino if unset).  You might be best to set this in

# your ~/.profile by adding something like this:

#

#   export ARDUINODIR=~/somewhere/arduino-1.0

#

# You will also need to set BOARD to the type of arduino you're using.  This

# can be done when running make (or you could set a default in ~/.profile and

# iverride it as necessary).  For example:

#

#   $ export BOARD=uno

#   $ make

#

# You may also need to set SERIALDEV if it is not detected correctly.

#

# The presence of a .ino or .pde file causes the arduino.mk to atuomatically

# determine va;ues for SOURCES, TARGET and LIBRARIES.  Any .c, .cc and .cpp

# files in the project directory (or any "util" or "utility" subdirectoried)

# are automatically included in the build and are scanned for Atduino libraries

# that have been #included.

#

# Alternatively, if you want to manually specify build variables, create a

# Makefile that defines SOURCES and LIBRARARIES and then includes arduino.mk.

# (There is no need to define TARGET).  Here is an example Makefile:

#

#   SOURCES := main.cc other.cc

#   LIBRARIES := EEPROM

#   include ~/src/arduino.mk

#

# Here is a complete list of configuration parameters:

#

# ARDUINODIR   The path where you have installed/unpacked the arduino software

#              (from http://arduino.cc/)

#

# BOARD        Specify a target board type.  Run `make boards` to see available

#              board types.

#

# SERIALDEV    The unix device of the device where the arduino can be found.

#              If unspecified, an attempt is made to determine the name of a

#              connected arduino's serial device.

#

# TARGET       The name of the target file.  This is set automatically if a

#              .ino or .pde is found, but it is not neccesary to set it

#              otherwise.

#

# SOURCES      A list of all source files of whatever language.  The language

#              type is determined by the file extension.  This is set

#              automatically if a .ino or .pde is found.

#

# LIBRARIES    A list of arduino libraries to build and include.  This is set

#              automatically if a .ino or .pde is found.

#

# This makefile also defines the following goals for use on the command line

# when you run make:

#

# all          This is the default if no goal is specified.  It builds the

#              target and uploads it.

#

# target       Builds the target.

#

# upload       Uploads the last built target to an attached arduino.

#

# clean        Deletes files created during the build.

#

# boards       Display a list of available board names, so that you can set the

#              BOARD environment variable appropriately.

#

# monitor      Start `screen` on the serial device.  It is ment to be an

#              equivelant to the arduino serial monitor.

#

# <file>       Builds the specified file, either an object file or the target,

#              from those that that would be built for the project.

#_______________________________________________________________________________

#

# The full path to the arduino software, from arduino.cc

ifndef ARDUINODIR

ARDUINODIR := $(wildcard ~/opt/arduino)

endif

# check arduino software

ifeq ($(wildcard $(ARDUINODIR)/hardware/arduino/boards.txt), )

$(error ARDUINODIR is not set correctly; arduino software not found)

endif

# auto mode?

INOFILE := $(wildcard *.ino *.pde)

ifdef INOFILE

ifneq ($(words $(INOFILE)), 1)

$(error There is more than one .pde or .ino file in this directory!)

endif

TARGET := $(basename $(INOFILE))

SOURCES := $(INOFILE) \

	$(wildcard *.c *.cc *.cpp) \

	$(wildcard $(addprefix util/, *.c *.cc *.cpp)) \

	$(wildcard $(addprefix utility/, *.c *.cc *.cpp))

# automatically determine included libraries

ARDUINOLIBSAVAIL := $(notdir $(wildcard $(ARDUINODIR)/libraries/*))

LIBRARIES := $(filter $(ARDUINOLIBSAVAIL), \

	$(shell sed -ne "s/^ *\# *include *[<\"]\(.*\)\.h[>\"]/\1/p" $(SOURCES)))

endif

# no target? use default

ifndef TARGET

TARGET := a.out

endif

# no serial device? attempt to detect an arduino

ifndef SERIALDEV

SERIALDEV := $(firstword $(wildcard /dev/ttyACM? /dev/ttyUSB?))

endif

# no board? oh dear...

ifndef BOARD

ifneq "$(MAKECMDGOALS)" "boards"

ifneq "$(MAKECMDGOALS)" "clean"

$(error BOARD is unset.  Type 'make boards' to see possible values)

endif

endif

endif

# files

OBJECTS := $(addsuffix .o, $(basename $(SOURCES)))

ARDUINOSRCDIR := $(ARDUINODIR)/hardware/arduino/cores/arduino

ARDUINOLIB := _arduino.a

ARDUINOLIBTMP := _arduino.a.tmp

ARDUINOLIBOBJS := $(patsubst %, $(ARDUINOLIBTMP)/%.o, $(basename $(notdir \

	$(wildcard $(addprefix $(ARDUINOSRCDIR)/, *.c *.cpp)))))

ARDUINOLIBOBJS += $(foreach lib, $(LIBRARIES), \

	$(patsubst %, $(ARDUINOLIBTMP)/%.o, $(basename $(notdir \

	$(wildcard $(addprefix $(ARDUINODIR)/libraries/$(lib)/, *.c *.cpp))))))

# obtain board parameters from the arduino boards.txt file

BOARDS_FILE := $(ARDUINODIR)/hardware/arduino/boards.txt

BOARD_BUILD_MCU := \

	$(shell sed -ne "s/$(BOARD).build.mcu=\(.*\)/\1/p" $(BOARDS_FILE))

BOARD_BUILD_FCPU := \

	$(shell sed -ne "s/$(BOARD).build.f_cpu=\(.*\)/\1/p" $(BOARDS_FILE))

BOARD_BUILD_VARIANT := \

	$(shell sed -ne "s/$(BOARD).build.variant=\(.*\)/\1/p" $(BOARDS_FILE))

BOARD_UPLOAD_SPEED := \

	$(shell sed -ne "s/$(BOARD).upload.speed=\(.*\)/\1/p" $(BOARDS_FILE))

BOARD_UPLOAD_PROTOCOL := \

	$(shell sed -ne "s/$(BOARD).upload.protocol=\(.*\)/\1/p" $(BOARDS_FILE))

# software

CC := avr-gcc

CXX := avr-g++

LD := avr-ld

AR := avr-ar

OBJCOPY := avr-objcopy

AVRDUDE := avrdude

# flags

CPPFLAGS = -Os -Wall -fno-exceptions -ffunction-sections -fdata-sections

CPPFLAGS += -mmcu=$(BOARD_BUILD_MCU) -DF_CPU=$(BOARD_BUILD_FCPU)

CPPFLAGS += -I. -Iutil -Iutility -I$(ARDUINOSRCDIR)

CPPFLAGS += -I$(ARDUINODIR)/hardware/arduino/variants/$(BOARD_BUILD_VARIANT)/

CPPFLAGS += $(addprefix -I$(ARDUINODIR)/libraries/, $(LIBRARIES))

CPPFLAGS += $(patsubst %, -I$(ARDUINODIR)/libraries/%/utility, $(LIBRARIES))

AVRDUDEFLAGS = -C $(ARDUINODIR)/hardware/tools/avrdude.conf -DV

AVRDUDEFLAGS += -p $(BOARD_BUILD_MCU) -P $(SERIALDEV)

AVRDUDEFLAGS += -c $(BOARD_UPLOAD_PROTOCOL) -b $(BOARD_UPLOAD_SPEED)

LINKFLAGS = -Os -Wl,--gc-sections -mmcu=$(BOARD_BUILD_MCU)

# default rule

.DEFAULT_GOAL := all

#_______________________________________________________________________________

#                                                                          RULES

.PHONY:	all target upload clean boards monitor

all: target upload

target: $(TARGET).hex

upload:

	@echo "\nUploading to board..."

	@test -n "$(SERIALDEV)" || { \

		echo "error: SERIALDEV could not be determined automatically." >&2; \

		exit 1; }

	stty -F $(SERIALDEV) hupcl

	$(AVRDUDE) $(AVRDUDEFLAGS) -U flash:w:$(TARGET).hex:i

clean:

	rm -f $(OBJECTS)

	rm -f $(TARGET).elf $(TARGET).hex $(ARDUINOLIB) *~

	rm -rf $(ARDUINOLIBTMP)

boards:

	@echo Available values for BOARD:

	@sed -ne '/^#/d;s/^\(.*\).name=\(.*\)/\1            \2/;T' \

		-e 's/\(.\{12\}\) *\(.*\)/\1 \2/;p' $(BOARDS_FILE)

monitor:

	@test -n "$(SERIALDEV)" || { \

		echo "error: SERIALDEV could not be determined automatically." >&2; \

		exit 1; }

	screen $(SERIALDEV)

# building the target

$(TARGET).hex: $(TARGET).elf

	$(OBJCOPY) -O ihex -R .eeprom $< $@

.INTERMEDIATE: $(TARGET).elf

$(TARGET).elf: $(ARDUINOLIB) $(OBJECTS)

	$(CC) $(LINKFLAGS) $(OBJECTS) $(ARDUINOLIB) -o $@

%.o: %.ino

	$(COMPILE.cpp) -o $@ -x c++ -include $(ARDUINOSRCDIR)/Arduino.h $<

%.o: %.pde

	$(COMPILE.cpp) -o $@ -x c++ -include $(ARDUINOSRCDIR)/Arduino.h $<

# building the arduino library

$(ARDUINOLIB): $(ARDUINOLIBOBJS)

	$(AR) rcs $@ $?

	rm -rf $(ARDUINOLIBTMP)

.INTERMEDIATE: $(ARDUINOLIBOBJS)

$(ARDUINOLIBTMP)/%.o: $(ARDUINOSRCDIR)/%.c

	@test -d $(ARDUINOLIBTMP) || mkdir $(ARDUINOLIBTMP)

	$(COMPILE.c) -o $@ $<

$(ARDUINOLIBTMP)/%.o: $(ARDUINOSRCDIR)/%.cpp

	@test -d $(ARDUINOLIBTMP) || mkdir $(ARDUINOLIBTMP)

	$(COMPILE.cpp) -o $@ $<

$(ARDUINOLIBTMP)/%.o: $(ARDUINODIR)/libraries/*/%.c

	@test -d $(ARDUINOLIBTMP) || mkdir $(ARDUINOLIBTMP)

	$(COMPILE.c) -o $@ $<

$(ARDUINOLIBTMP)/%.o: $(ARDUINODIR)/libraries/*/%.cpp

	@test -d $(ARDUINOLIBTMP) || mkdir $(ARDUINOLIBTMP)

	$(COMPILE.cpp) -o $@ $<