No documentation found for "perlfunc"

XiaoYong:~ $ perldoc -f grep
No documentation found for "perlfunc".

XiaoYong:~ $ perldoc -q grep
No documentation found for "perlfaq1".
No documentation found for "perlfaq2".
No documentation found for "perlfaq3".
No documentation found for "perlfaq4".
No documentation found for "perlfaq5".
No documentation found for "perlfaq6".
No documentation found for "perlfaq7".
No documentation found for "perlfaq8".
No documentation found for "perlfaq9".

有人提交了 bug： http://bugs.archlinux.org/task/16488

请问这怎么解决？难道一定要修改 PKGBUILD ，自己编译 perl 吗？