macos - macOS assembly, cannot use str() command

Question

I have been following this tutorial and have got stuck at the following code: leaq str(%rip), %rdi.

My full assembly code is the following:

.data
.text
.globl _main
_main:
  pushq %rbp
  movq %rsp, %rbp
  subq $32, %rsp

  leaq str(%rip), %rdi
  callq _printf

And my Makefile:

build:
  as main.s -o main.o
  ld main.o -e _main -lc -macosx_version_min 10.13 -arch x86_64  -o main

run: build
  ./main

And finally the output of the command make build:

as main.s -o main.o
ld main.o -e _main -lc -macosx_version_min 10.13 -arch x86_64  -o main
Undefined symbols for architecture x86_64:
  "str", referenced from:
      _main in main.o
ld: symbol(s) not found for architecture x86_64
make: *** [build] Error 1

How am I able to link the str command for use in macOS assembly?

标签： macosassembly64-bitnasmld