unsupported symbol modifier in branch relocation: “call printf@PLT”

[MichaelScofield]

Firstly, thank you for sharing this great compiler writing jounery, I'm rather interested!

I'm in chapter 4 (generating assembly code), and trying to follow the code.

Here's the out assembly codes (saved in file "out.s"):

	.text
LC0:
	.string	"%d\n"
_printint:
	pushq	%rbp
	movq	%rsp, %rbp
	subq	$16, %rsp
	movl	%edi, -4(%rbp)
	movl	-4(%rbp), %eax
	movl	%eax, %esi
	leaq	LC0(%rip), %rdi
	movl	$0, %eax
	call	printf@PLT
	nop
	leave
	ret

	.globl	_main
_main:
	pushq	%rbp
	movq	%rsp, %rbp
	movq	$2, %r8
	movq	$3, %r9
	movq	$5, %r10
	imulq	%r9, %r10
	addq	%r8, %r10
	movq	$8, %r8
	movq	$3, %r9
	movq	%r8,%rax
	cqo
	idivq	%r9
	movq	%rax,%r8
	subq	%r8, %r10
	movq	%r10, %rdi
	call	_printint
	movl	$0, %eax
	popq	%rbp
	ret

When running it with

cc -o out out.s

, it complained with

out.s:13:2: error: unsupported symbol modifier in branch relocation
 call printf@PLT
 ^

How is the error happened and how to fix it?

Thanks in advance!

PS:

1. I am using macOS Catalina 10.15.2
2. cc version is

Apple clang version 11.0.0 (clang-1100.0.33.17)
Target: x86_64-apple-darwin19.2.0
Thread model: posix
InstalledDir: /Library/Developer/CommandLineTools/usr/bin

3. The souce codes are compiled with
   cc -o comp1 -g cg.c expr.c gen.c main.c scan.c tree.c

[MichaelScofield]

Nevermind, change to call _printf works.

[DoctorWkt]

Thanks Michael. I'd be pretty sure the macOS compiler and environment is different enough from Ubuntu/Debian Linux that some changes to the code generator will be required.