ifndef VERBOSE
MAKEFLAGS += --no-print-directory
endif

CFLAGS += -mcpu=cortex-m0plus
CFLAGS += -mthumb
CFLAGS += -g3
CFLAGS += -O2
CFLAGS += -Wall
CFLAGS += -ffunction-sections
CFLAGS += -fdata-sections
CFLAGS += -Wpointer-arith

ifneq ($(findstring -T, $(LDFLAGS)), -T)
LDFLAGS += -T$(SDK_BASE_DIR)/flash.ld
endif
LDFLAGS += -mcpu=cortex-m0plus
LDFLAGS += -mthumb
LDFLAGS += -g3
LDFLAGS += -O2
LDFLAGS += -Wall
LDFLAGS += -Wl,--gc-sections
LDFLAGS += -nostartfiles
LDFLAGS += -Wl,-Map=$(EXAMPLE_NAME).map
LDFLAGS += -Wl,--print-memory-usage

CMAKE := cmake
ELF2UF2 := $(SDK_BASE_DIR)/tools/elf2uf2

# The command to remove a file.
RM = $(CMAKE) -E remove_directory

COMX ?=COM1
BAUDRATE ?=2000000

# cmake definition config
# toolchain
cmake_definition+= -DCMAKE_C_COMPILER=$(CROSS_COMPILE)gcc
cmake_definition+= -DCMAKE_CXX_COMPILER=$(CROSS_COMPILE)g++
cmake_definition+= -DCMAKE_ASM_COMPILER=$(CROSS_COMPILE)gcc
cmake_definition+= -DCMAKE_LINKER=$(CROSS_COMPILE)ld
cmake_definition+= -DCMAKE_OBJCOPY=$(CROSS_COMPILE)objcopy
cmake_definition+= -DCMAKE_OBJDUMP=$(CROSS_COMPILE)objdump
cmake_definition+= -DCMAKE_AR=$(CROSS_COMPILE)ar
cmake_definition+= -DCMAKE_RANLIB=$(CROSS_COMPILE)ranlib
cmake_definition+= -DCMAKE_C_FLAGS="$(CFLAGS)"
cmake_definition+= -DCMAKE_CXX_FLAGS="$(CFLAGS)"
cmake_definition+= -DCMAKE_EXE_LINKER_FLAGS="$(LDFLAGS)"

cmake_definition+= -DCONFIG_COMX=$(COMX)
cmake_definition+= -DSDK_BASE_DIR=$(SDK_BASE_DIR)
cmake_definition+= -DEXAMPLE_NAME=$(EXAMPLE_NAME)
cmake_definition+= -DEXAMPLE_BASE_DIR=$(EXAMPLE_BASE_DIR)

FINAL_NAME_PRE := $(EXAMPLE_BASE_DIR)/build/$(EXAMPLE_NAME)

post:build
ifdef BOOT2_PRE_CRC
	@$(CROSS_COMPILE)objcopy -O binary --only-section=.boot2_pre $(FINAL_NAME_PRE).elf $(BOOT2_PRE_CRC)
	@python3 $(SDK_BASE_DIR)/tools/boot2_pre_crc.py $(BOOT2_PRE_CRC)
	@$(CROSS_COMPILE)objcopy --update-section .boot2_pre=$(BOOT2_PRE_CRC) $(FINAL_NAME_PRE).elf
	@rm $(BOOT2_PRE_CRC)
endif
	@$(CROSS_COMPILE)objcopy -O binary $(FINAL_NAME_PRE).elf $(FINAL_NAME_PRE).bin
	@$(CROSS_COMPILE)objdump -d -S $(FINAL_NAME_PRE).elf > $(FINAL_NAME_PRE).asm
	@$(CROSS_COMPILE)nm $(FINAL_NAME_PRE).elf > $(FINAL_NAME_PRE).nm
	@$(ELF2UF2) $(FINAL_NAME_PRE).elf $(FINAL_NAME_PRE).uf2
	@size $(FINAL_NAME_PRE).elf
	@sha256sum $(FINAL_NAME_PRE).bin

build:Makefile
	$(CMAKE) -S . -B build -G "Unix Makefiles" $(cmake_definition)
	$(MAKE) -C build -j

clean::
	$(RM) build

.PHONY:post build clean