REV := master
BASE := https://raw.githubusercontent.com/cnlohr/ch32v003fun/$(REV)/ch32fun
CURL_FLAGS := -O -\# --fail --location --tlsv1.3 --proto =https --max-time 300

TARGET = blink
TARGET_MCU?=CH32V003
NEWLIB=/usr/arm-none-eabi/include
CFLAGS=-g -Os -flto -ffunction-sections -fdata-sections -fmessage-length=0 -msmall-data-limit=8
LDFLAGS+=-Wl,--print-memory-usage -Wl,-Map=$(TARGET).map
PREFIX := riscv64-linux-gnu
CC := $(PREFIX)-gcc

# riscv64-linux-gnu-gcc -E -P -x c -DTARGET_MCU=CH32V003 -DMCU_PACKAGE= -DTARGET_MCU_LD=0 -DTARGET_MCU_MEMORY_SPLIT= ../../ch32fun/ch32fun.ld > ../../ch32fun/generated_ch32v003.ld
# riscv64-linux-gnu-gcc -o blink.elf ../../ch32fun/ch32fun.c blink.c   -g -Os -flto -ffunction-sections -fdata-sections -fmessage-length=0 -msmall-data-limit=8 -march=rv32ec -mabi=ilp32e -DCH32V003=1 -static-libgcc -I/usr/arm-none-eabi/include -I../../ch32fun/../extralibs -I../../ch32fun -nostdlib -I. -Wall  -Wl,--print-memory-usage -Wl,-Map=blink.map -L../../ch32fun/../misc -lgcc -T ../../ch32fun/generated_ch32v003.ld -Wl,--gc-sections

# Correct?
EXTFLAGS := -march=rv32ec -mabi=ilp32e -DCH32V003=1 -static-libgcc -I/usr/arm-none-eabi/include -nostdlib -I. -Wall -L. -lgcc -T ch32v003.ld -Wl,--gc-sections

default: $(TARGET).bin

$(TARGET).elf: ch32fun.c blink.c | ch32v003.ld ch32fun.h ch32v003hw.h
	@echo CC $@
	@$(CC) $(CFLAGS) $(LDFLAGS) $(EXTFLAGS) -o $@ $^

ch32v003.ld: ch32fun.ld
	@riscv64-linux-gnu-gcc -E -P -x c -DTARGET_MCU=$(TARGET_MCU) -DMCU_PACKAGE= -DTARGET_MCU_LD=0 -DTARGET_MCU_MEMORY_SPLIT= $< > $@

ch32fun.ld:
	@curl $(CURL_FLAGS) $(BASE)/ch32fun.ld

ch32fun.c:
	@curl $(CURL_FLAGS) $(BASE)/ch32fun.c

ch32v003hw.h:
	@curl $(CURL_FLAGS) $(BASE)/ch32v003hw.h

ch32fun.h:
	@curl $(CURL_FLAGS) $(BASE)/ch32fun.h

deps:
	@curl $(CURL_FLAGS) $(BASE)/ch32fun.ld
	@curl $(CURL_FLAGS) $(BASE)/ch32v003hw.h
	@curl $(CURL_FLAGS) $(BASE)/ch32fun.c
	@curl $(CURL_FLAGS) $(BASE)/ch32fun.h

$(TARGET).bin : $(TARGET).elf
	$(PREFIX)-objdump -S $^ > $(TARGET).lst
	$(PREFIX)-objcopy -O binary $< $(TARGET).bin
	$(PREFIX)-objcopy -O ihex $< $(TARGET).hex

flash:
	minichlink -w $(TARGET).bin flash -b

clean:
	rm -f ch32*.[ch]
	rm -f *.ld
	rm -f *.hex
	rm -f *.bin
	rm -f *.map
	rm -f *.lst
	rm -f *.elf
	rm -f *.ld

.PHONY: clean flash deps default