Arduino base build file

Makefile-arduino

# Arduino Makefile 1.0 - Matthias Hryniszak

# ------------------------------------------------------------------------------
# General settings
# ------------------------------------------------------------------------------

LIBRARY=arduino
MCU=atmega328p
FREQUENCY=16000000

# project settings
DEPS=$(wildcard *.h)           # all header files
C_SOURCES=$(wildcard *.c)      # all source files
CPP_SOURCES=$(wildcard *.cpp)  # all source files
OBJECTS=${C_SOURCES:.c=.o} ${CPP_SOURCES:.cpp=.o}  # all object files from source files

# ------------------------------------------------------------------------------
# Compilation definition
# ------------------------------------------------------------------------------

CC=avr-gcc
CXX=avr-g++
CFLAGS=-c -Wall --std=gnu99 -g -Os -s -mmcu=$(MCU) -fdata-sections -ffunction-sections -I. -DF_CPU=$(FREQUENCY) -DARDUINO=106

# ------------------------------------------------------------------------------
# Compilation rules
# ------------------------------------------------------------------------------

%.o: %.c $(DEPS)
	$(CC) -c -o $@ $< $(CFLAGS)

%.o: %.cpp $(DEPS)
	$(CXX) -c -o $@ $< $(CFLAGS)

lib$(LIBRARY).a: $(OBJECTS)
	avr-ar rvs lib$(LIBRARY).a $(OBJECTS)

all: lib$(LIBRARY).a
clean:
	rm -f $(OBJECTS) $(DFILES) lib$(LIBRARY).a

Makefile-sketch

# AVR Makefile 1.0 - Matthias Hryniszak

# ------------------------------------------------------------------------------
# General settings
# ------------------------------------------------------------------------------

PROGRAM=avr-blink
MCU=atmega328p
FREQUENCY=16000000

# avrdude settings
PROGRAMER=arduino
PROGRAMER_PORT=/dev/ttyACM0
PROGRAMER_FLAGS=

# project settings
DEPS=$(wildcard *.h)           # all header files
C_SOURCES=$(wildcard *.c)      # all source files
CPP_SOURCES=$(wildcard *.cpp)  # all source files

OBJECTS=${C_SOURCES:.c=.o} ${CPP_SOURCES:.cpp=.o}  # all object files from source files

# libraries this project depends on
LIBRARIES=m arduino

# ------------------------------------------------------------------------------
# Compilation definition
# ------------------------------------------------------------------------------

CC=avr-gcc
CXX=avr-g++
CFLAGS=-c -Wall --std=gnu99 -g -Os -s -mmcu=$(MCU) -fdata-sections -ffunction-sections -I. -Iarduino -DF_CPU=$(FREQUENCY) -DARDUINO=106
LDFLAGS=-Larduino $(foreach library,$(LIBRARIES),-l$(library))

# ------------------------------------------------------------------------------
# Compilation rules
# ------------------------------------------------------------------------------

%.o: %.c $(DEPS)
	$(CC) -c -o $@ $< $(CFLAGS)

%.o: %.cpp $(DEPS)
	$(CXX) -c -o $@ $< $(CFLAGS)

$(PROGRAM).elf: $(OBJECTS)
	$(CC) -Os -s -Wl,--gc-sections -mmcu=$(MCU) -o $(PROGRAM).elf $(OBJECTS) $(LDFLAGS)
	avr-size -C --mcu=$(MCU) -x $(PROGRAM).elf

%.hex: %.elf
	avr-objcopy -j .text -j .data -O ihex $< $@

all: $(PROGRAM).elf

load: $(PROGRAM).hex
	avrdude -p $(MCU) -c $(PROGRAMER) -P $(PROGRAMER_PORT) $(PROGRAMER_FLAGS) -U flash:w:$(PROGRAM).hex:i

clean:
	rm -f $(OBJECTS) $(DFILES) $(PROGRAM).elf $(PROGRAM).hex

terminal:
	cu -l $(PROGRAMER_PORT) -s 9600