###############################################################################
# ARM Section
CROSS_COMPILE ?= arm-none-eabi-
GEN_FLAGS := \
	-mcpu=cortex-m4 \
	-mthumb \
	-mfloat-abi=hard \
	-mfpu=fpv4-sp-d16 \
	-Og \
	-fmessage-length=0 \
	-fsigned-char \
	-ffunction-sections \
	-fdata-sections \
	-ffreestanding \
	-fno-move-loop-invariants \
	-Werror \
	-Wunused \
	-Wuninitialized \
	-Wall \
	-Wextra \
	-Wmissing-declarations \
	-Wconversion \
	-Wpointer-arith \
	-Wpadded \
	-Wshadow \
	-Wlogical-op \
	-Waggregate-return \
	-Wfloat-equal \
	-g3
#	-flto  ## behind -ffreestanding

C_FLAGS = \
	-DDEBUG \
	-DUSE_FULL_ASSERT \
	-DTRACE \
	-DOS_USE_TRACE_SEMIHOSTING_DEBUG \
	-DSTM32F407xx \
	-DUSE_HAL_DRIVER \
	-DHSE_VALUE=8000000 \
	$(addprefix -I, $(INCLUDES)) \
	-std=gnu11 \
	-Wmissing-prototypes \
	-Wstrict-prototypes \
	-Wbad-function-cast \
	-Wno-bad-function-cast \
	-Wno-conversion \
	-Wno-sign-conversion \
	-Wno-unused-parameter \
	-Wno-sign-compare \
	-Wno-missing-prototypes \
	-Wno-missing-declarations

L_FLAGS := \
	-T mem.ld \
	-T libs.ld \
	-T sections.ld \
	-nostartfiles \
	-Xlinker --gc-sections \
	-L"config/linker" \
	-Wl,-Map,"template.map" \
	--specs=nano.specs \

INCLUDES += \
	/opt/arm-2011.09/arm-none-eabi/include \
	/opt/arm-2011.09/lib/gcc/arm-none-eabi/4.6.1/include \
	source/firmware

###############################################################################
# TOOLS Section
CC = $(CROSS_COMPILE)gcc
CXX = $(CROSS_COMPILE)g++
OBJCOPY = $(CROSS_COMPILE)objcopy

OBJ_DIR = release/object/debug
EXE_DIR = release/execute/debug

include source/firmware/firmware.mk
include source/test/src/src.mk

###############################################################################
C_SOURCES := $(foreach folder, $(SRC_DIR), $(wildcard $(folder)/*.c))
C_OBJECTS := $(C_SOURCES:%.c=$(OBJ_DIR)/%.o)
MAIN_FILE := $(EXE_DIR)/template.elf
BIN_FILE :=  $(EXE_DIR)/template.bin
OOCD_CFG_FILE := $(EXE_DIR)/openocd.cfg

all: $(C_OBJECTS)
	@mkdir -p $(EXE_DIR)
	$(CXX) $(GEN_FLAGS) $(L_FLAGS)-o "$(MAIN_FILE)" $(C_OBJECTS)
	$(OBJCOPY) $(MAIN_FILE) -O binary $(BIN_FILE)
$(OBJ_DIR)/%.o: %.c
	@mkdir -p $(OBJ_DIR)
	@$(foreach folder, $(SRC_DIR), $(shell mkdir -p $(OBJ_DIR)/$(folder)))
	$(CC) $(GEN_FLAGS) $(C_FLAGS) -MMD -MP -MF"$(subst .o,.d,$@)" -MT"$@" -c -o "$@" "$<"

clean:
	$(foreach folder, $(SRC_DIR), $(shell rm -f $(OBJ_DIR)/$(folder)/*.o))
	$(foreach folder, $(SRC_DIR), $(shell rm -f $(OBJ_DIR)/$(folder)/*.d))
	-rm -f $(OBJ_DIR)/*.o \
	$(OBJ_DIR)/*.d \
	$(MAIN_FILE) \
	$(BIN_FILE)

install: all
	echo "telnet_port 4444\ninit\nreset halt\nflash write_image erase $(BIN_FILE) 0x08000000 bin\nreset run\n shutdown\n" > $(OOCD_CFG_FILE)
	openocd -f /usr/share/openocd/scripts/board/stm32f4discovery.cfg -f $(OOCD_CFG_FILE)