How to make object files into another directory - c

Question

There are my main dir structure
push_swap
|helpers/ -> *.c files
|format_parsing/ -> *.c files
|push_swaph/ -> push_swap.c, sort_a.c
|libft/ -> *.c files, libft.h
|ft_printf/ -> *.c files, libftprintf.h
|includes/ -> header_push_swap.h
______________________________________________________
In which method in a makefile i can create an object files from all *.c files and put them into another directory like objs/?
NAME = push_swap
LIBFT = libft.a
PRINTF = libftprintf.a
HEADER = includes/header_push_swap.h
LIBFTHEADER = libft/libft.h
PRINTFHEADER = ft_printf/includes/header.h
OBJS_DIR = objs/
SRC = $(wildcard ./format_parsing/*.c) \
$(wildcard ./helpers/*.c) \
$(wildcard ./push_swaph/*.c)
OBJS = $(SRC:.c=.o)
CC = gcc
FLAGS = -Wall -Wextra -Werror
all: $(NAME)
$(NAME) : $(LIBFTHEADER) $(PRINTFHEADER) $(LIBFT) $(PRINTF) $(OBJS)
#$(CC) $(FLAGS) $(OBJS) -o $(NAME)
$(LIBFT) :
#cd ./libft && make
$(PRINTF) :
#cd ./ft_printf/ && make
clean :
#rm -rf $(OBJS_DIR)
#rm -f $(OBJS)
fclean : clean
#rm -rf $(OBJS)
#cd ./libft/ && make fclean
#cd ./ft_printf/ && make fclean
I made this makefile but it is still creates an object files inside of my C files directories.
And a second problem when i want to make $(NAME) it compiles all files and in last case it didn't found the references of functions in libft and ft_printf. But i put the header files also $(LIBFTHEADER) $(PRINTFHEADER).
/usr/bin/ld: ./format_parsing/parsing.o: in function `stack_nums_counter':
parsing.c:(.text+0x3b): undefined reference to `ft_strlen'
/usr/bin/ld: ./helpers/actions1.o: in function `pa':
actions1.c:(.text+0x60): undefined reference to `ft_printf'
/usr/bin/ld: ./helpers/actions1.o: in function `pb':
actions1.c:(.text+0xc9): undefined reference to `ft_printf'
/usr/bin/ld: ./helpers/actions1.o: in function `ra':
actions1.c:(.text+0x156): undefined reference to `ft_printf'
/usr/bin/ld: ./helpers/actions1.o: in function `rb':
actions1.c:(.text+0x1e3): undefined reference to `ft_printf'
/usr/bin/ld: ./helpers/actions2.o: in function `rr':
actions2.c:(.text+0x35): undefined reference to `ft_printf'
/usr/bin/ld: ./helpers/actions2.o:actions2.c:(.text+0x8e): more undefined references to `ft_printf' follow
/usr/bin/ld: ./helpers/helpers.o: in function `__store__':
helpers.c:(.text+0x4c): undefined reference to `ft_split'
/usr/bin/ld: helpers.c:(.text+0xd9): undefined reference to `ft_atoi'
/usr/bin/ld: ./helpers/helpers.o: in function `__check__collection':
helpers.c:(.text+0x342): undefined reference to `ft_printf'
collect2: error: ld returned 1 exit status
make: *** [Makefile:18: push_swap] Error 1

Answer 1

The easiest way is to specify the targets with directories and use VPATH to find the source files. There is no way to test your supplied Makefile you didn't supply a minimal reproducible example so here is a skeleton instead:
Makefile:
.PHONY: all clean
NAME = push_swap
VPATH = src
all: $(NAME)
clean:
rm -f objs/* $(MAME)
$(NAME): objs/push_swap.o
objs/%.o: %.c
$(CC) -o $# $<
and create a couple of directories:
mkdir objs src
and an example src file:
#include <stdio.h>
int main(void) {
printf("ok\n");
return 1;
}
You can now run make and the object files end up objs, and in this case the binary in the top-level directory:
$ ls objs/* push_swap
ls: cannot access 'objs/*': No such file or directory
ls: cannot access 'push_swap': No such file or directory
$ make
$ ls objs/* push_swap
objs/push_swap.o
push_swap