我是一个Perl初学者试图在cygwin上安装LWP :: Simple（CYGWIN_NT-6.3），但是无法安装。安装似乎从一开始就出错了。你能帮我解决一下这个问题吗？
$ perl -MCPAN -e'install "LWP::Simple"'
Going to read '/home/grw.kremilek/.cpan/Metadata'
Database was generated on Thu, 11 Sep 2014 19:53:17 GMT
Running install for module 'LWP::Simple'
Running make for M/MS/MSCHILLI/libwww-perl-6.08.tar.gz
Checksum for /home/grw.kremilek/.cpan/sources/authors/id/M/MS/MSCHILLI/libwww-perl-6.08.tar.gz ok
CPAN.pm: Going to build M/MS/MSCHILLI/libwww-perl-6.08.tar.gz
Checking if your kit is complete...
Looks good
Warning: prerequisite Encode::Locale 0 not found.
Warning: prerequisite File::Listing 6 not found.
Warning: prerequisite HTML::Entities 0 not found.
Warning: prerequisite HTML::HeadParser 0 not found.
Warning: prerequisite HTTP::Cookies 6 not found.
Warning: prerequisite HTTP::Daemon 6 not found.
Warning: prerequisite HTTP::Date 6 not found.
Warning: prerequisite HTTP::Negotiate 6 not found.
Warning: prerequisite HTTP::Request 6 not found.
Warning: prerequisite HTTP::Request::Common 6 not found.
Warning: prerequisite HTTP::Response 6 not found.
Warning: prerequisite HTTP::Status 6 not found.
Warning: prerequisite LWP::MediaTypes 6 not found.
Warning: prerequisite Net::HTTP 6.07 not found.
Warning: prerequisite URI 1.10 not found.
Warning: prerequisite URI::Escape 0 not found.
Warning: prerequisite WWW::RobotRules 6 not found.
Writing Makefile for LWP
Writing MYMETA.yml
---- Unsatisfied dependencies detected during ----
---- MSCHILLI/libwww-perl-6.08.tar.gz ----
URI::Escape [requires]
LWP::MediaTypes [requires]
Encode::Locale [requires]
HTTP::Status [requires]
File::Listing [requires]
HTTP::Negotiate [requires]
HTML::Entities [requires]
HTTP::Daemon [requires]
Net::HTTP [requires]
URI [requires]
HTML::HeadParser [requires]
HTTP::Cookies [requires]
HTTP::Request::Common [requires]
HTTP::Date [requires]
HTTP::Response [requires]
HTTP::Request [requires]
WWW::RobotRules [requires]
Running make test
Delayed until after prerequisites
Running make install
Delayed until after prerequisites
Running install for module 'URI::Escape'
Running make for E/ET/ETHER/URI-1.64.tar.gz
Checksum for /home/grw.kremilek/.cpan/sources/authors/id/E/ET/ETHER/URI-1.64.tar.gz ok
或者只是通过perl_vendor安装setup.exe
你的cpan输出告诉你的是LWP :: Simple有17个必备模块（它们需要运行的模块），你必须确保在cpan运行LWP的构建/测试/安装之前它们都已安装完毕::简单。
当cpan检测到系统上尚未安装先决条件时，您的cpan配置可以有三种可能的设置：
请记住，这17个中的许多也可能具有自己的先决条件，因此通常最简单，并且通常可以安全地让cpan auto安装先决条件。
除非你看到cpan的输出明确表示安装失败，否则你做得很好。
所以给出了这个错误报告：
Warning: Prerequisite 'WWW::RobotRules => 6' for 'MSCHILLI/libwww-perl-6.08.tar.gz' failed when processing 'GAAS/WWW-RobotRules-6.02.tar.gz' with 'make => NO'.
Continuing, but chances to succeed are limited.
MSCHILLI/libwww-perl-6.08.tar.gz make -- NOT OK
Running make test
Can't test without successful make
Running make install
Make had returned bad status, install seems impossible
您将想要弄清楚为什么WWW：RobotRules无法安装。我这样做：
$ cpan
cpan[1]> look WWW::RobotRules
[The module is downloaded is needed and then a shell is opened into the download directory]
$ perl Makefile.PL
$ make
$ make test
[This is where failure is likely to occur - report the failure messages back to us]
LWP有一个cygwin包：perl-libwww-perl
如果您需要HTTPS，您应该安装：perl-LWP-Protocol-https
请试试
cpan App::cpanminus
cpanm LWP::Simple
好吧，它有用吗？
curl -L http://cpanmin.us | perl - --sudo App::cpanminus
要么
cd ~/bin
curl -LO http://xrl.us/cpanm
chmod +x cpanm
# edit shebang if you don't have /usr/bin/env