ановил GDB 8.1 с варкой.

У меня есть кодовый знак GDB также и .gdbinit, как показано ниже:

set startup-with-shell off.

Я отключил функцию SIP:

$ csrutil status
System Integrity Protection status: disabled.

Но GDB по-прежнему не работает:

#include <iostream>
using namespace std;

int main() {
  cout << "hello world!" << endl;
  return 0;
}

Команда компиляции:

g++ -g test.cpp

Вывод GDB:

GNU gdb (GDB) 8.1
Copyright (C) 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-apple-darwin17.3.0".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from a.out...Reading symbols from /Users/mypc/Downloads/a.out.dSYM/Contents/Resources/DWARF/a.out...done.
done.
(gdb) run
Starting program: /Users/mypc/Downloads/a.out 
[New Thread 0x2503 of process 802]
[New Thread 0x2303 of process 802]
During startup program terminated with signal ?, Unknown signal.
(gdb) 

Какие правильные шаги, чтобы заставить GDB работать на Macos Sierra?