SIMPLELINK_LOWPOWER_F3_SDK_INSTALL_DIR ?= $(abspath ../../../../../../..)

include $(SIMPLELINK_LOWPOWER_F3_SDK_INSTALL_DIR)/imports.mak

CC = "$(GCC_ARMCOMPILER)/bin/arm-none-eabi-gcc"
LNK = "$(GCC_ARMCOMPILER)/bin/arm-none-eabi-gcc"

SYSCFG_CMD_STUB = $(SYSCONFIG_TOOL) --compiler gcc --product $(SIMPLELINK_LOWPOWER_F3_SDK_INSTALL_DIR)/.metadata/product.json
SYSCFG_FILES := $(shell $(SYSCFG_CMD_STUB) --listGeneratedFiles --listReferencedFiles --output . ../../freertos/i2copt3001_cpp.syscfg)

SYSCFG_C_FILES = $(filter %.c,$(SYSCFG_FILES))
SYSCFG_H_FILES = $(filter %.h,$(SYSCFG_FILES))
SYSCFG_OPT_FILES = $(filter %.opt,$(SYSCFG_FILES))

OBJECTS = i2copt3001_cpp.obj OPT3001.obj freertos_main_freertos.obj $(patsubst %.c,%.obj,$(notdir $(SYSCFG_C_FILES)))
NAME = i2copt3001_cpp

CFLAGS += -I../.. \
    -I. \
    $(addprefix @,$(SYSCFG_OPT_FILES)) \
    -O3 \
    "-I$(SIMPLELINK_LOWPOWER_F3_SDK_INSTALL_DIR)/source" \
    -D_REENT_SMALL \
    "-I$(SIMPLELINK_LOWPOWER_F3_SDK_INSTALL_DIR)/kernel/freertos" \
    "-I$(SIMPLELINK_LOWPOWER_F3_SDK_INSTALL_DIR)/source/ti/posix/gcc" \
    "-I$(FREERTOS_INSTALL_DIR)/FreeRTOS/Source/include" \
    "-I$(FREERTOS_INSTALL_DIR)/FreeRTOS/Source/portable/GCC/ARM_CM0" \
    -mcpu=cortex-m0plus \
    -march=armv6-m \
    -mthumb \
    -std=c99 \
    -mfloat-abi=soft \
    -ffunction-sections \
    -fdata-sections \
    -g \
    -gstrict-dwarf \
    -Wall \
    "-I$(GCC_ARMCOMPILER)/arm-none-eabi/include/newlib-nano" \
    "-I$(GCC_ARMCOMPILER)/arm-none-eabi/include"

CPPFLAGS += -I../.. \
    -I. \
    $(addprefix @,$(SYSCFG_OPT_FILES)) \
    -O3 \
    "-I$(SIMPLELINK_LOWPOWER_F3_SDK_INSTALL_DIR)/source" \
    -D_REENT_SMALL \
    "-I$(SIMPLELINK_LOWPOWER_F3_SDK_INSTALL_DIR)/kernel/freertos" \
    "-I$(SIMPLELINK_LOWPOWER_F3_SDK_INSTALL_DIR)/source/ti/posix/gcc" \
    "-I$(FREERTOS_INSTALL_DIR)/FreeRTOS/Source/include" \
    "-I$(FREERTOS_INSTALL_DIR)/FreeRTOS/Source/portable/GCC/ARM_CM0" \
    -mcpu=cortex-m0plus \
    -march=armv6-m \
    -mthumb \
    -std=c++11 \
    -mfloat-abi=soft \
    -ffunction-sections \
    -fdata-sections \
    -g \
    -gstrict-dwarf \
    -Wall \
    "-I$(GCC_ARMCOMPILER)/arm-none-eabi/include/newlib-nano" \
    "-I$(GCC_ARMCOMPILER)/arm-none-eabi/include"

LFLAGS += -lstdc++ \
    -Wl,-T,../../freertos/gcc/cc23x0r5_freertos.lds \
    "-Wl,-Map,$(NAME).map" \
    -mcpu=cortex-m0plus \
    "-L$(SIMPLELINK_LOWPOWER_F3_SDK_INSTALL_DIR)/source" \
    ti_utils_build_linker.cmd.genlibs \
    -march=armv6-m \
    -mthumb \
    -nostartfiles \
    -static \
    -Wl,--gc-sections \
    "-L$(GCC_ARMCOMPILER)/arm-none-eabi/lib/thumb/v6-m/nofp" \
    -lgcc \
    -lc \
    -lm \
    -lnosys \
    --specs=nano.specs

all: $(NAME).out

.INTERMEDIATE: syscfg
$(SYSCFG_FILES): syscfg
	@ echo generation complete

syscfg: ../../freertos/i2copt3001_cpp.syscfg
	@ echo Generating configuration files...
	@ $(SYSCFG_CMD_STUB) --output $(@D) $<

define C_RULE
$(basename $(notdir $(1))).obj: $(1) $(SYSCFG_H_FILES)
	@ echo Building $$@
	@ $(CC) $(CFLAGS) $$< -c -o $$@
endef

$(foreach c_file,$(SYSCFG_C_FILES),$(eval $(call C_RULE,$(c_file))))

freertos_main_freertos.obj: ../../freertos/main_freertos.c $(SYSCFG_H_FILES)
	@ echo Building $@
	@ $(CC) $(CFLAGS) $< -c -o $@

i2copt3001_cpp.obj: ../../i2copt3001_cpp.cpp $(SYSCFG_H_FILES)
	@ echo Building $@
	@ $(CC) $(CPPFLAGS) $< -c -o $@

OPT3001.obj: ../../OPT3001.cpp $(SYSCFG_H_FILES)
	@ echo Building $@
	@ $(CC) $(CPPFLAGS) $< -c -o $@

$(NAME).out: $(OBJECTS)
	@ echo linking $@
	@ $(LNK)  $(OBJECTS)  $(LFLAGS) -o $(NAME).out

clean:
	@ echo Cleaning...
	@ $(RM) $(OBJECTS) > $(DEVNULL) 2>&1
	@ $(RM) $(NAME).out > $(DEVNULL) 2>&1
	@ $(RM) $(NAME).map > $(DEVNULL) 2>&1
	@ $(RM) $(SYSCFG_FILES)> $(DEVNULL) 2>&1
