#    MIT License
#
#    Copyright (c) 2018, Alexey Dynda
#
#    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.
#
#################################################################
# Makefile containing common logic for all systems
#
# Accepts the following parameters:
# CC
# CXX
# STRIP
# AR

default: all

DESTDIR ?=
BLD ?= ../bld
BACKSLASH?=/
MKDIR?=mkdir -p
convert=$(subst /,$(BACKSLASH),$1)

.SUFFIXES: .c .cpp .ino

$(BLD)/%.o: %.c
	-$(MKDIR) $(call convert,$(dir $@))
	$(CC) -std=gnu11 $(CCFLAGS) -c $< -o $@

$(BLD)/%.o: %.ino
	-$(MKDIR) $(call convert,$(dir $@))
	$(CXX) -std=c++11 $(CCFLAGS) $(CXXFLAGS) $(CCFLAGS-$(basename $(notdir $@))) -x c++ -c $< -o $@

$(BLD)/%.o: %.cpp
	-$(MKDIR) $(call convert,$(dir $@))
	$(CXX) -std=c++11 $(CCFLAGS) $(CXXFLAGS) $(CCFLAGS-$(basename $(notdir $@))) -c $< -o $@

################ OPTIONS ##########################

ifeq ($(ADAFRUIT),y)
ADAFRUIT_DIR ?= $(shell readlink -f ~)/Arduino/libraries/Adafruit_GFX_Library

INCLUDES += -I$(ADAFRUIT_DIR) \

#	-I$(shell readlink -f ../src)/ssd1306_hal/linux/arduino

CCFLAGS-Adafruit_GFX= -DARDUINO=100

SRCS += \
	$(ADAFRUIT_DIR)/Adafruit_GFX.cpp
endif

# ************* Common defines ********************

INCLUDES += \
        -I.

CCFLAGS += -MD -g -Os $(INCLUDES) -Wall -Werror -ffunction-sections -fdata-sections \
	-fno-exceptions

CXXFLAGS += -fno-rtti

ifeq ($(SDL_EMULATION),y)
    CCFLAGS += -DSDL_EMULATION -I../tools/sdl
endif

.PHONY: clean ssd1306 all help

include Makefile.src

####################### Compiling library #########################

$(BLD)/libssd1306.a: $(OBJS)
	$(AR) rcs $@ $(OBJS)

ssd1306: $(BLD)/libssd1306.a

all: ssd1306

clean:
	rm -rf $(BLD)

help:
	@echo "Makefile accepts the following options:"
	@echo "    ADAFRUIT=y/n       Enables compilation of Adafruit GFX library"
	@echo "    ADAFRUIT_DIR=path  Path to Adafruit GFX library"
	@echo "    SDL_EMULATION=y/n  Enables SDL emulator in the library"
	@echo "    FREQUENCY=N        Frequency in Hz"
	@echo "    MCU=mcu_code       Specifies MCU to compile for (valid for AVR)"

-include $(OBJS:%.o=%.d)