安装Math::Pari模块失败

CODE:

Did not find GP/PARI build directory around.

Do you want to me to fetch GP/PARI automatically?

  (If you do not, you will need to fetch it manually, and/or direct me to
   the directory with GP/PARI source via the command-line option paridir=/dir)

Make sure you have a large scrollback buffer to see the messages, or `tee'
the STDOUT/STDERR to a file.

Fetch? (y/n, press Enter)