Data::Dumper is a part of Perl and should come installed with your Perl installation already. If your distributor did exclude it, you have to find what package they put it in instead. You can check whether you have Data::Dumper installed by running the following command:

perl -MData::Dumper -e 'print "Data::Dumper is installed"'
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The error message indicates that your C compiler is a different C compiler (version) than what was used to compile Perl with - this likely means that you will encounter more problems when you try to install Perl modules with a C (or "XS") component.

It says that it is installed but whenever i try using it in a perl script, this is what i get:

administrator@varunraj ~/scripts
$ perl ex1.pl
Can't locate Data/Dupmer.pm in @INC (@INC contains: /usr/lib/perl5/5.1
+0/i686-cyg
win /usr/lib/perl5/5.10 /usr/lib/perl5/site_perl/5.10/i686-cygwin /usr
+/lib/perl5
/site_perl/5.10 /usr/lib/perl5/vendor_perl/5.10/i686-cygwin /usr/lib/p
+erl5/vendo
r_perl/5.10 /usr/lib/perl5/vendor_perl/5.10 /usr/lib/perl5/site_perl/5
+.8 /usr/li
b/perl5/vendor_perl/5.8 .) at ex1.pl line 5.
BEGIN failed--compilation aborted at ex1.pl line 5.
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It says it can't locate Dumper.pm
This is the code i wrote:

#!/usr/bin/perl
#use strict;
#use warnings;
use XML::Simple;
use Data::Dupmer;

my $simple = XML::Simple->new(); 
my $struct = $simple->XMLin("./xml/exer1.xml", forcearray => 1, keepro
+ot => 1); 

print Dumper($struct);
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You're trying to use Data::Dupmer, but the module name is Data::Dumper.

cpan or cpanplus take care of the missing dependencies.