TARGET_DEVICE ?= atmega328p
HWTYPE ?= HYDRO_TARGET_DEVICE_ATMEGA328
ARDUINO_HOME ?= /Applications/Arduino.app/Contents/Java
ARDUINO_TOOLS ?= $(ARDUINO_HOME)/hardware/tools/avr/bin
AR = $(ARDUINO_TOOLS)/avr-gcc-ar
CC = $(ARDUINO_TOOLS)/avr-gcc
RANLIB = $(ARDUINO_TOOLS)/avr-gcc-ranlib
WFLAGS ?= -Wall -Wextra -Wmissing-prototypes -Wdiv-by-zero -Wbad-function-cast -Wcast-align -Wcast-qual -Wfloat-equal -Wmissing-declarations -Wnested-externs -Wno-unknown-pragmas -Wpointer-arith -Wredundant-decls -Wstrict-prototypes -Wswitch-enum -Wno-type-limits
CFLAGS ?= -mmcu=$(TARGET_DEVICE) -Os -mcall-prologues -fno-exceptions -ffunction-sections -fdata-sections -flto $(WFLAGS)
CFLAGS += -I. -I$(ARDUINO_HOME)/hardware/arduino/avr/cores/arduino -I$(ARDUINO_HOME)/hardware/arduino/avr/variants/standard
CFLAGS += -DHYDRO_HWTYPE=$(HYDRO_HWTYPE)
OBJ = hydrogen.o
ARDUINO_PACKAGE ?= hydrogen-crypto.zip
SRC = \
	hydrogen.c \
	hydrogen.h \
	impl/common.h \
	impl/core.h \
	impl/gimli-core.h \
	impl/hash.h \
	impl/hydrogen_p.h \
	impl/kdf.h \
	impl/kx.h \
	impl/pwhash.h \
	impl/random.h \
	impl/secretbox.h \
	impl/sign.h \
	impl/x25519.h \
	impl/gimli-core/portable.h \
	impl/random/*.h

all: lib package

package: $(ARDUINO_PACKAGE)

$(ARDUINO_PACKAGE):
	7z a -tzip -mx=9 -r $(ARDUINO_PACKAGE) $(SRC) library.properties

lib: libhydrogen.a

$(OBJ): $(SRC)

libhydrogen.a: $(OBJ)
	$(AR) -ar cr $@ $^
	$(RANLIB) $@

.PHONY: clean

clean:
	rm -f libhydrogen.a $(OBJ)
	rm -f tests/tests
	rm -f $(ARDUINO_PACKAGE)