리눅스 Makefile 명령어 옵션중 에러처리 옵션 질문 입니다.

../demo/handler/h_arf.c: In function ‘handler_atomic_read_file’:
../demo/handler/h_arf.c:173:21: warning: format ‘%d’ expects argument of type ‘int’, but argument 4 has type ‘size_t’ [-Wformat]
../demo/handler/h_awf.c: In function ‘handler_atomic_write_file’:
../demo/handler/h_awf.c:133:21: warning: format ‘%d’ expects argument of type ‘int’, but argument 4 has type ‘size_t’ [-Wformat]

main.c: In function ‘AtomicReadFileAckHandler’:
main.c:142:25: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘size_t’ [-Wformat]
main.c:296:17: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘size_t’ [-Wformat]

main.c: In function ‘process_read_property_multiple’:
main.c:264:8: warning: unused variable ‘filename’ [-Wunused-variable]
main.c: In function ‘process_write_property’:
main.c:335:7: warning: variable ‘status’ set but not used [-Wunused-but-set-variable]
main.c: In function ‘main’:

main.c:587:4: warning: implicit declaration of function ‘trend_log_timer’ [-Wimplicit-function-declaration]

위와 같은 에러를 낸다고 해서 프로그램이 죽지는 않습니다.
지저분해보여서 위와 같은 에러를 발생시키지 않도록 하고 싶은데요.
Makefile 에서 -w 옵션을 넣어주면 발생하지 않는다고 해서 넣어줘 보았는데 여전히 에러가 발생하여 질문하게 되었습니다

# Default compiler settings
OPTIMIZATION = -Os
DEBUGGING =
#WARNINGS = -Wall -Wmissing-prototypes
ifeq (${BUILD},debug)
OPTIMIZATION = -O0
DEBUGGING = -g -DDEBUG_ENABLED=1
ifeq (${BACDL_DEFINE},-DBACDL_BIP=1)
DEFINES += -DBIP_DEBUG
endif
endif
CFLAGS += -Wno-unused-variable $(WARNINGS) $(DEBUGGING) $(OPTIMIZATION) $(STANDARDS) $(INCLUDES) $(DEFINES)

all: library demos
.PHONY : all library demos clean

library:
$(MAKE) -s -C lib all

demos:
$(MAKE) -s -C demo all