CC ?= cc
CFLAGS ?= -Wall -O2 -I.
LDFLAGS ?=

TARGET = main.elf
SRC = main.c ./cjson/cJSON.c

$(TARGET): $(SRC)
	@echo CC $@
	@$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)

CJSON_URL = https://github.com/DaveGamble/cJSON/archive/refs/heads/master.tar.gz
CJSON_TAR = cjson.tar.gz
CJSON_DIR = cJSON-master

cjson:
	curl -L $(CJSON_URL) -o $(CJSON_TAR)
	tar -xzf $(CJSON_TAR)
	mv ./cJSON-master ./cjson

clean:
	rm -f $(TARGET)