simple asm template

CMakeLists.txt

cmake_minimum_required(VERSION 3.16)
project(main NONE)

add_custom_command(
	OUTPUT main.o
	DEPENDS main.asm
	COMMAND nasm -f elf64 main.asm -o main.o
)
add_custom_command(
	OUTPUT main
	DEPENDS main.o
	COMMAND ld main.o -o main
)
add_custom_target(build ALL DEPENDS main)

main.asm

        global _start
        section .text
_start:
        xor eax, eax
        not rax
        xor eax, eax

        mov byte [0x0], 0 ; cause trap