/make/arduino-mk

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initial commit
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#_______________________________________________________________________________
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#
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#                         edam's arduino makefile
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#_______________________________________________________________________________
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#                                                                    version 0.1
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#
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# Copyright (c) 2011 Tim Marston <tim@ed.am>.
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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#
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#_______________________________________________________________________________
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#
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#
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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 release and requires that software
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# to be downloaded separately (see http://arduino.cc/).  To download the latest
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# version of this makefile, visit the following website, where you can also
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# find more information and documentation on it's use.  The following text can
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# only really be considered a reference to it's use.
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#
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fixed URL
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#   http://ed.am/dev/make/arduino-mk
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#
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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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#
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#   $ ln -s ~/src/arduino.mk Makefile
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#
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# You also need to set up a couple of environment variables. ARDUINODIR should
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# be set to the path where you unpacked the arduino software from arduino.cc
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# (it defaults to ~/opt/arduino if unset).  You might be best to set this in
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# your ~/.profile by adding something like this:
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#
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#   export ARDUINODIR=~/somewhere/arduino-1.0
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#
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# You will also need to set BOARD to the type of arduino you're using.  This
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# can be done when running make (or you could set a default in ~/.profile and
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# override it as necessary).  For example:
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#
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#   $ export BOARD=uno
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#   $ make
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#
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# You may also need to set SERIALDEV if it is not detected correctly.
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#
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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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#
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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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#
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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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#
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# Here is a complete list of configuration parameters:
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#
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# ARDUINODIR   The path where you have installed/unpacked the arduino software
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#              (from http://arduino.cc/)
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#
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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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#
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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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#
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# AVRTOOLSPATH A space-separated list of directories to search in order when
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#              lookin for the avr build tools. This defaults to the system PATH
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#              followed by subdirectories in ARDUINODIR if undefined.
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#
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# BOARD        Specify a target board type.  Run `make boards` to see available
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#              board types.
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#
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# LIBRARIES    A list of arduino libraries to build and include.  This is set
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#              automatically if a .ino (or .pde) is found.
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#
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# SERIALDEV    The unix device name of the serial device that is the arduino.
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#              If unspecified, an attempt is made to determine the name of a
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#              connected arduino's serial device.
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#
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# SOURCES      A list of all source files of whatever language.  The language
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#              type is determined by the file extension.  This is set
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#              automatically if a .ino (or .pde) is found.
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#
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# TARGET       The name of the target file.  This is set automatically if a
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#              .ino (or .pde) is found, but it is not necessary to set it
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#              otherwise.
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#
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# This makefile also defines the following goals for use on the command line
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# when you run make:
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#
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# all          This is the default if no goal is specified.  It builds the
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#              target and uploads it.
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#
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# target       Builds the target.
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#
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# upload       Uploads the last built target to an attached arduino.
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#
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# clean        Deletes files created during the build.
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#
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# boards       Display a list of available board names, so that you can set the
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#              BOARD environment variable appropriately.
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#
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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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#
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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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#
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# default arduino software directory, check software exists
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ifndef ARDUINODIR
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ARDUINODIR := $(wildcard ~/opt/arduino)
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endif
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ifeq "$(wildcard $(ARDUINODIR)/hardware/arduino/boards.txt)" ""
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$(error ARDUINODIR is not set correctly; arduino software not found)
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endif
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# default arduino version
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ARDUINOCONST ?= 100
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# default path for avr tools
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ifndef AVRTOOLSPATH
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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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endif
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# auto mode?
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INOFILE := $(wildcard *.ino *.pde)
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ifdef INOFILE
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ifneq "$(words $(INOFILE))" "1"
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$(error There is more than one .pde or .ino file in this directory!)
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endif
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# automatically determine sources and targeet
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TARGET := $(basename $(INOFILE))
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SOURCES := $(INOFILE) \
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	$(wildcard *.c *.cc *.cpp) \
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	$(wildcard $(addprefix util/, *.c *.cc *.cpp)) \
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	$(wildcard $(addprefix utility/, *.c *.cc *.cpp))
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# automatically determine included libraries
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ARDUINOLIBSAVAIL := $(notdir $(wildcard $(ARDUINODIR)/libraries/*))
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LIBRARIES := $(filter $(ARDUINOLIBSAVAIL), \
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	$(shell sed -ne "s/^ *\# *include *[<\"]\(.*\)\.h[>\"]/\1/p" $(SOURCES)))
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updated comments; added checks for missing or misconfigured variables; use a default TARGET; attempt to autodetect SERIALDEV; added 'boards' goal; fixed use of 'util' project subdirectory.
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endif
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# no serial device? make a poor attempt to detect an arduino
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SERIALDEVGUESS := 0
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ifeq "$(SERIALDEV)" ""
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SERIALDEV := $(firstword $(wildcard \
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	/dev/ttyACM? /dev/ttyUSB? /dev/tty.usbmodem*))
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SERIALDEVGUESS := 1
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endif
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# software
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findsoftware = $(firstword $(wildcard $(addsuffix /$(1), $(AVRTOOLSPATH))))
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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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OBJCOPY := $(call findsoftware,avr-objcopy)
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AVRDUDE := $(call findsoftware,avrdude)
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# files
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TARGET := $(if $(TARGET),$(TARGET),a.out)
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OBJECTS := $(addsuffix .o, $(basename $(SOURCES)))
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ARDUINOSRCDIR := $(ARDUINODIR)/hardware/arduino/cores/arduino
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ARDUINOLIBSDIR := $(ARDUINODIR)/libraries
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ARDUINOLIB := _arduino.a
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ARDUINOLIBTMP := $(ARDUINOLIB).tmp
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ARDUINOLIBOBJS := $(patsubst %, $(ARDUINOLIBTMP)/%.o, $(basename $(notdir \
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	$(wildcard $(addprefix $(ARDUINOSRCDIR)/, *.c *.cpp)))))
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ARDUINOLIBOBJS += $(foreach lib, $(LIBRARIES), \
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	$(patsubst %, $(ARDUINOLIBTMP)/%.o, $(basename $(notdir \
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	$(wildcard $(addprefix $(ARDUINOLIBSDIR)/$(lib)/, *.c *.cpp)) \
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	$(wildcard $(addprefix $(ARDUINOLIBSDIR)/$(lib)/utility/, *.c *.cpp)) ))))
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ifeq "$(AVRDUDECONF)" ""
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ifeq "$(AVRDUDE)" "$(ARDUINODIR)/hardware/tools/avr/bin/avrdude"
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AVRDUDECONF := $(ARDUINODIR)/hardware/tools/avr/etc/avrdude.conf
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else
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AVRDUDECONF := $(wildcard $(AVRDUDE).conf)
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endif
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endif
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# no board?
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ifndef BOARD
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ifneq "$(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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endif
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endif
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endif
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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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BOARD_BUILD_MCU := \
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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" $(BOARDS_FILE))
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# invalid board?
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ifeq "$(BOARD_BUILD_MCU)" ""
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ifneq "$(MAKECMDGOALS)" "boards"
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ifneq "$(MAKECMDGOALS)" "clean"
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$(error BOARD is invalid.  Type 'make boards' to see possible values)
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endif
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endif
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endif
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# flags
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CPPFLAGS := -Os -Wall -fno-exceptions -ffunction-sections -fdata-sections
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CPPFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums
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CPPFLAGS += -mmcu=$(BOARD_BUILD_MCU)
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CPPFLAGS += -DF_CPU=$(BOARD_BUILD_FCPU) -DARDUINO=$(ARDUINOCONST)
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CPPFLAGS += -I. -Iutil -Iutility -I$(ARDUINOSRCDIR)
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CPPFLAGS += -I$(ARDUINODIR)/hardware/arduino/variants/$(BOARD_BUILD_VARIANT)/
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CPPFLAGS += $(addprefix -I$(ARDUINODIR)/libraries/, $(LIBRARIES))
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CPPFLAGS += $(patsubst %, -I$(ARDUINODIR)/libraries/%/utility, $(LIBRARIES))
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AVRDUDEFLAGS := $(addprefix -C , $(AVRDUDECONF)) -DV
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AVRDUDEFLAGS += -p $(BOARD_BUILD_MCU) -P $(SERIALDEV)
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AVRDUDEFLAGS += -c $(BOARD_UPLOAD_PROTOCOL) -b $(BOARD_UPLOAD_SPEED)
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LINKFLAGS := -Os -Wl,--gc-sections -mmcu=$(BOARD_BUILD_MCU)
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# figure out which arg to use with stty
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STTYFARG := $(shell stty --help > /dev/null 2>&1 && echo -F || echo -f)
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# default rule
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.DEFAULT_GOAL := all
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#_______________________________________________________________________________
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#                                                                          RULES
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.PHONY:	all target upload clean boards monitor
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all: target upload
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target: $(TARGET).hex
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upload:
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	@echo "\nUploading to board..."
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	@test -n "$(SERIALDEV)" || { \
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		echo "error: SERIALDEV could not be determined automatically." >&2; \
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		exit 1; }
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	@test 1 -eq $(SERIALDEVGUESS) && { \
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		echo "*GUESSING* at serial device:" $(SERIALDEV); \
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		echo; }
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	stty $(STTYFARG) $(SERIALDEV) hupcl
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	$(AVRDUDE) $(AVRDUDEFLAGS) -U flash:w:$(TARGET).hex:i
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clean:
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	rm -f $(OBJECTS)
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	rm -f $(TARGET).elf $(TARGET).hex $(ARDUINOLIB) *~
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	rm -rf $(ARDUINOLIBTMP)
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updated comments; added checks for missing or misconfigured variables; use a default TARGET; attempt to autodetect SERIALDEV; added 'boards' goal; fixed use of 'util' project subdirectory.
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boards:
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	@echo Available values for BOARD:
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	@sed -ne '/^#/d;s/^\(.*\).name=\(.*\)/\1            \2/;T' \
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		-e 's/\(.\{12\}\) *\(.*\)/\1 \2/;p' $(BOARDS_FILE)
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monitor:
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announce that we're uploading and error on SERIALDEV blank
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	@test -n "$(SERIALDEV)" || { \
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		echo "error: SERIALDEV could not be determined automatically." >&2; \
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		exit 1; }
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	@test -n `which screen` || { \
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		echo "error: can't find GNU screen, you might need to install it." >&2 \
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		ecit 1; }
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	@test 1 -eq $(SERIALDEVGUESS) && { \
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		echo "*GUESSING* at serial device:" $(SERIALDEV); \
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		echo; }
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	screen $(SERIALDEV)
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# building the target
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$(TARGET).hex: $(TARGET).elf
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	$(OBJCOPY) -O ihex -R .eeprom $< $@
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.INTERMEDIATE: $(TARGET).elf
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$(TARGET).elf: $(ARDUINOLIB) $(OBJECTS)
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	$(CC) $(LINKFLAGS) $(OBJECTS) $(ARDUINOLIB) -o $@
1 by edam
initial commit
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%.o: %.ino
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	$(COMPILE.cpp) -o $@ -x c++ -include $(ARDUINOSRCDIR)/Arduino.h $<
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%.o: %.pde
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	$(COMPILE.cpp) -o $@ -x c++ -include $(ARDUINOSRCDIR)/Arduino.h $<
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# building the arduino library
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4 by edam
added included-library autodetection and updated comments
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$(ARDUINOLIB): $(ARDUINOLIBOBJS)
1 by edam
initial commit
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	$(AR) rcs $@ $?
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	rm -rf $(ARDUINOLIBTMP)
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4 by edam
added included-library autodetection and updated comments
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.INTERMEDIATE: $(ARDUINOLIBOBJS)
1 by edam
initial commit
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$(ARDUINOLIBTMP)/%.o: $(ARDUINOSRCDIR)/%.c
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	@test -d $(ARDUINOLIBTMP) || mkdir $(ARDUINOLIBTMP)
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	$(COMPILE.c) -o $@ $<
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$(ARDUINOLIBTMP)/%.o: $(ARDUINOSRCDIR)/%.cpp
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	@test -d $(ARDUINOLIBTMP) || mkdir $(ARDUINOLIBTMP)
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	$(COMPILE.cpp) -o $@ $<
4 by edam
added included-library autodetection and updated comments
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$(ARDUINOLIBTMP)/%.o: $(ARDUINODIR)/libraries/*/%.c
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	@test -d $(ARDUINOLIBTMP) || mkdir $(ARDUINOLIBTMP)
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	$(COMPILE.c) -o $@ $<
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$(ARDUINOLIBTMP)/%.o: $(ARDUINODIR)/libraries/*/%.cpp
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	@test -d $(ARDUINOLIBTMP) || mkdir $(ARDUINOLIBTMP)
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	$(COMPILE.cpp) -o $@ $<
14 by Dan
search for software in ARDUINODIR; include library/*/utility code in core lib
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$(ARDUINOLIBTMP)/%.o: $(ARDUINODIR)/libraries/*/utility/%.c
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	@test -d $(ARDUINOLIBTMP) || mkdir $(ARDUINOLIBTMP)
15 by edam
fixed detection of env. vars. and a typo in a rule that caused it not to work
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	$(COMPILE.c) -o $@ $<
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search for software in ARDUINODIR; include library/*/utility code in core lib
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$(ARDUINOLIBTMP)/%.o: $(ARDUINODIR)/libraries/*/utility/%.cpp
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	@test -d $(ARDUINOLIBTMP) || mkdir $(ARDUINOLIBTMP)
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	$(COMPILE.cpp) -o $@ $<