MakeMakefile#xsystem

# File tmp/rubies/ruby-4.0.0/lib/mkmf.rb, line 438
def xsystem(command, werror: false)
  env, command = expand_command(command)
  Logging::open do
    puts [env_quote(env), command.quote].join(' ')
    if werror
      result = nil
      Logging.postpone do |log|
        output = IO.popen(env, command, &:read)
        result = ($?.success? and File.zero?(log.path))
        output
      end
      result
    else
      system(env, *command)
    end
  end
end