提示不是root权限：
需要执行：o conf make_install_make_command 'sudo make'
来自动切换到root，但是还是会需要输入密码！！！
输出部分信息如下：
make: *** [pure_site_install] Error 13
TIMB/DBI-1.634.tar.gz
/usr/bin/make install -- NOT OK
----
You may have to su to root toinstall the package
(Or you may want to run somethinglike
o conf make_install_make_command'sudo make'
to raise your permissions.Failedduring this command:
TIMB/DBI-1.634.tar.gz : install NO
cpan[2]> o confmake_install_make_command 'sudo make'
make_install_make_command [sudomake]
Please use 'o conf commit' to make the configpermanent!
cpan[2]> o conf commit
commit: wrote '/Users/it-0003005/.cpan/CPAN/MyConfig.pm'