[PerlChina] BioPerl 安装问题求助

用cpan安装bioperl遇到一个奇怪的问题。
程序提示要安装 module::build
然后在安装这个包的时候报错，说：
Can't locate Pod/Simple.pm in @INC (@INC contains: ...) at /usr/lib/
perl5/5.10.0/Pod/Man.pm line 35.

我以为是没有Pod::Simple这个包，就在cpan上找到了这个东西：

cpan[7]> d /Pod-Simple/
Distribution ARANDAL/Pod-Simple-3.08.tar.gz
Distribution BORISZ/Pod-Simple-Text-Termcap-0.01.tar.gz
Distribution CWEST/Pod-Simple-31337-0.02.tar.gz
Distribution DSTAAL/Pod-Simple-Wiki-Wikka-0.09.tar.gz
Distribution FAYLAND/Pod-Simple-Wiki-Googlecode-0.03.tar.gz
Distribution JGOFF/Pod-Simple-LaTeX-0.06.tar.gz
Distribution JMCNAMARA/Pod-Simple-Wiki-0.11.tar.gz
Distribution PSHANGOV/Pod-Simple-Vim-0.02.tar.gz
8 items found

但是在安装这个Pod-Simple-3.08的时候，依然是这个报错：

Can't locate Pod/Simple.pm in @INC (@INC contains: ....) at /usr/lib/
perl5/5.10.0/Pod/Man.pm line 35.
BEGIN failed--compilation aborted at /usr/lib/perl5/5.10.0/Pod/Man.pm
line 35.
Compilation failed in require at /usr/lib/perl5/5.10.0/ExtUtils/
Command/MM.pm line 92.
make: *** [manifypods] 错误 2
ARANDAL/Pod-Simple-3.08.tar.gz
/usr/bin/make -- NOT OK
Warning (usually harmless): 'YAML' not installed, will not store
persistent state
Running make test
Can't test without successful make
Running make install
Make had returned bad status, install seems impossible
Failed during this command:
SBURKE/Pod-Escapes-1.04.tar.gz : make NO
ARANDAL/Pod-Simple-3.08.tar.gz : make NO

请问这是怎么回事。按说，我安装的就是这个Pod-Simple.pm 他怎么会提示说自己找不到自己？

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