C:\Users\Moez1>cpanm Math::Pari --prompt
Set up gcc environment - gcc.exe (rubenvb-4.5.4) 4.5.4
--> Working on Math::Pari
Fetching http://www.cpan.org/authors/id/I/IL/ILYAZ/modules/Math-Pari-2.01080605.tar.gz ... OK
Configuring Math-Pari-2.01080605 ... OK
Building and testing Math-Pari-2.01080605 ... Building Math-Pari-2.01080605 failed.
You can s)kip, r)etry, e)xamine build log, or l)ook ? [s] e
FAIL
! You don't seem to have a PAGER :/
Building Math-Pari-2.01080605 failed.
You can s)kip, r)etry, e)xamine build log, or l)ook ? [s] l
Entering C:/.cpanm/work/1375113149.2244/Math-Pari-2.01080605 with C:\Windows\system32\cmd.exe
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

##</code><code>##

C:\.cpanm\work\1375113149.2244\Math-Pari-2.01080605>perl -v

This is perl 5, version 16, subversion 2 (v5.16.2) built for MSWin32-x64-multi-thread
(with 1 registered patch, see perl -V for more detail)

Copyright 1987-2012, Larry Wall

Binary build 1602 [296513] provided by ActiveState http://www.ActiveState.com
Built Dec 19 2012 00:07:06

Perl may be copied only under the terms of either the Artistic License or the
GNU General Public License, which may be found in the Perl 5 source kit.

Complete documentation for Perl, including FAQ lists, should be found on
this system using "man perl" or "perldoc perl".  If you have access to the
Internet, point your browser at http://www.perl.org/, the Perl Home Page.