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Re: Perl: Operation "bool": no method found

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 ( 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/ line 1568.

Line 1568 of 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.


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Problem solved: I asked for help on the biblatex-biber forum and was told that Cygwin's Module::Build module is outdated and needs to be updated via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


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