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Date: Wed, 09 Mar 2011 09:23:52 -0500
From: Ken Brown <kbrown AT cornell DOT edu>
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To: cygwin AT cygwin DOT com
Subject: Re: Perl: Operation "bool": no method found
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On 3/8/2011 8:42 PM, Rafael Kitover wrote:
> On 3/8/2011 2:14 PM, Ken Brown wrote:
>> I'm trying to build biber (http://biblatex-biber.sourceforge.net/) for
>> Cygwin.  It is written in Perl.  The documentation says to start by
>> running `perl Build.PL' in order to make sure that I have all the
>> required modules.  This fails as follows:
>>
>> $ perl Build.PL
>> Operation "bool": no method found, argument in overloaded package
>> version at /usr/lib/perl5/5.10/Module/Build/Base.pm line 1568.
>>
>> Line 1568 of Base.pm is
>>
>>    return $^V ? $self->perl_version_to_float(sprintf "%vd", $^V) : $];
>>
>> I know practically nothing about Perl, but I was hoping I could still
>> build biber by following instructions.  I would appreciate any hints as
>> to how to track down the problem.  I'm attaching Build.PL as well as
>> cygcheck output.
>>
>> Ken
>
> I had similar bizarre error messages related to $^V, specifically the
> construct sprintf "%vd", $^V, in my case related to CPAN::Reporter for
> doing test reports from cpan shell.
>
> This is something related to the $^V being a version.pm object, as it is
> in new perls, but the version class not being available for some reason,
> hence perl trying to call nonexistant overloaded methods.
>
> Reini, what do you think?

Problem solved: I asked for help on the biblatex-biber forum and was 
told that Cygwin's Module::Build module is outdated and needs to be 
updated via

   perl -MCPAN -e "install Module::Build"

This worked.

Ken

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