# Copyright 2015 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
APP ?= $(notdir $(PWD))
VERSION ?= $(shell date +%Y%m%d)+git$(shell git describe --always)

SRC = $(wildcard *.cc)
OBJ = $(SRC:%.cc=%.o)

CROSS_COMPILE = avr-
CC = $(CROSS_COMPILE)gcc
CXX = $(CROSS_COMPILE)g++
CFLAGS = -Os -DF_CPU=$(CLOCK) -mmcu=$(DEVICE) -Wall
CXXFLAGS = $(CFLAGS) -std=gnu++1y

all: $(APP).hex

usb-flash: $(APP).hex
	sudo $(HOME)/bin/micronucleus --run $<

%.elf: $(OBJ)
	$(CXX) $(CXXFLAGS) -o $@ $(OBJ)
	$(CROSS_COMPILE)size -d $@

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

clean:
	rm -f $(APP).hex $(APP).elf $(OBJ) *~ *.ii

dist:
	rm -rf tmp
	mkdir tmp
	git archive --prefix=$(APP)-$(VERSION)/ HEAD | gzip > tmp/$(APP)-$(VERSION).tar.gz
	cd tmp && git clone $$(readlink -f ..) $(APP)
	$(MAKE) -C tmp/$(APP)