how can I solve my compiling problem with makefile - c

Question

I am trying to compile a simple C function to handle two stacks of ints and sorting them with specific rules.
I had no problem compiling earlier but I can't anymore. and receive this error message :
make: *** No rule to make target `objs/main.c', needed by `push_swap'. Stop.
Below is my code;
NAME = push_swap
SRC_DIR = srcs
SRC = main.c \
instructions/swap.c \
instructions/rotate.c \
instructions/push.c \
instructions/reverse.c \
utils/check_duplicate.c \
utils/chunk_clear.c \
utils/chunk.c \
utils/ft_error.c \
utils/ft_split.c \
utils/highest.c \
utils/init_stack.c \
utils/is_sorted.c \
utils/lowest.c \
utils/num.c \
utils/tab.c \
sort/five.c \
sort/small.c \
sort/sorter.c \
OBJ_DIR = objs
OBJ = $(addprefix $(OBJ_DIR)/, $(SRC:.c =.o))
HEADER_FOLDER = inc
CC = gcc
CFLAGS = -Werror -Wextra -Wall -I$(HEADER_FOLDER) -g
RM = rm -rf
all: $(NAME)
$(OBJ_DIR):
#mkdir -p $(OBJ_DIR)
#mkdir -p $(OBJ_DIR)/operations
#mkdir -p $(OBJ_DIR)/sorters
#mkdir -p $(OBJ_DIR)/utils
$(NAME): $(OBJ_DIR) $(OBJ)
#cd libft && make && cd ../
#echo "making push_swap ... \033[32mok\033[0m"
#$(CC) $(CFLAGS) -o $(NAME) $(OBJ) $(HEADER)
$(OBJ_DIR)/%.o: $(SRC_DIR)/%.c
#echo "Compiling ... $# \033[32mok\033[0m"
#$(CC) $(CFLAGS) -c $< -o $#
clean:
#cd libft && make clean && cd ../
#echo "Removing object files ... \033[32mok\033[0m"
#$(RM) $(OBJ) $(OBJ_DIR)
fclean:
#cd libft && make fclean && cd ../
#echo "Removing files and program ... \033[32mok\033[0m"
#$(RM) $(NAME) $(OBJ) $(OBJ_DIR)
re: fclean all
.PHONY: all re fclean clean

Answer 1

The problem is that $(SRC:.c =.o) doesn't work because of that space (there are no SRC names ending with ".c " (including the last space).
It should be $(SRC:.c=.o).