kingsaint has asked for the wisdom of the Perl Monks concerning the following question:

I need to use XML::LibXML in my project to handle a complex xml structure. I installed the corresponding perl module "perl-XML-LibXML-1.70-5.el6.src.rpm " as I'm using a system with CentOS 6(Kernel version-2.6.32-358.11.1.el6.centos.plus.x86_64). The above module installed with the following warnings:

1:perl-XML-LibXML        warning: user mockbuild does not exist - usin
+g root
warning: group mockbuild does not exist - using root
warning: user mockbuild does not exist - using root
warning: group mockbuild does not exist - using root
########################################### [100%]

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Then I tried to write a simple perl script to test whether it's working or not. Following is my test code:

test_2.pl ----------- 
#!/usr/bin/perl

use XML::LibXML;

 $parser = XML::LibXML->new();
 $doc    = $parser->parse_file('TreeList_dup.xml');
 print $doc->toString;

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But here is the error message I got: 

 Can't locate XML/LibXML.pm in @INC (@INC contains: /usr/local/lib64/p
+erl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/p
+erl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5 .) at test_2.pl li
+ne 3.
BEGIN failed--compilation aborted at test_2.pl line 3.

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Can anyone help me to understand the error message and tell me how to recover from it?

Replies are listed 'Best First'.
Re: Can't locate XML/LibXML.pm in @INC
by tobyink (Canon) on Sep 23, 2013 at 06:06 UTC

    You installed a .src.rpm file. This is the source code for the package; it is not what you want. The compiled module will be in an i586.rpm or x86_64.rpm or similar.

    use Moops; class Cow :rw { has name => (default => 'Ermintrude') }; say Cow->new->name
[reply]

      Thanks for the reply.Well, I tried to install

      perl-XML-LibXML-1.70-5.el6.x86_64.rpm. It threw the following error message:
      error: Failed dependencies:
    perl(XML::SAX::DocumentLocator) is needed by perl-XML-LibXML-1:1.7
+0-5.el6.x86_64

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      To resolve the dependency, I tried to install

      perl-XML-SAX-0.96-7.el6.noarch.rpm.

      It threw the following error message:

      error: Failed dependencies:
    perl(XML::LibXML) is needed by perl-XML-SAX-0.96-7.el6.noarch

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      Why there exists a cross dependency between XML::LibXML and XML::SAX::DocumentLocator? How to resolve it?

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[d/l]
[select]

        Why there exists a cross dependency between XML::LibXML and XML::SAX::DocumentLocator?

        Because whomever created the RPMs you're using made it that way

        there is no such cross dependency on CPAN. XML::SAX doesn't require XML::LibXML, but XML::LibXML requires

        How to resolve it?

        Force installation (every package manager has the option), or use cpan or cpanm to install XML::LibXML

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        How to resolve it?

        Install both at the same time.

        Take the time to learn the tools you are working with!

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