Call C from x86-64 assembly

hello.c

#include <stdio.h>

void hello(void) {
    printf("Hello, World!\n");
    return;
}

main.asm

global main
extern hello
section .text
main:
	call hello
	;call hello

	; exit(0)
	mov rax, 60
	xor rdi, rdi
	syscall

Makefile

main: main.o hello.o
	gcc -o main main.o hello.o

main.o: main.asm
	nasm -felf64 -o main.o main.asm

hello.o: hello.c
	gcc -c -o hello.o hello.c

.PHONY: clean
clean:
	rm -f *.o main