cjson ignore and comment

cjson/Makefile

@@ -1,12 +1,22 @@
-CC ?= gcc
-CFLAGS ?= -Wall -O2 -lcjson
+CC ?= cc
+CFLAGS ?= -Wall -O2 -I.
+LDFLAGS ?=
 
 TARGET = main.elf
-SRC = main.c
+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)