Function execute

build.py:24–34

(cmd: str, cwd: Optional[str] = None)

def execute(cmd: str, cwd: Optional[str] = None):
  popen = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
                           shell=True, text=True, cwd=cwd)
  for stdout_line in iter(popen.stdout.readline, ""):
    sys.stdout.write(stdout_line)
    sys.stdout.flush()

  popen.stdout.close()
  return_code = popen.wait()
  if return_code:
    raise subprocess.CalledProcessError(return_code, cmd)


def ensure_spidermonkey():