PAR and BEGINs

Hello all!

I have a strange behaviour, any idea or help is welcome.

I've developed a program in Linux that by dependencies needs
/usr/lib/perl5/Net/DNS/Resolver.pm

The last release of Resolver.pm starts with a BEGIN block like follows:









*use vars qw(@ISA);BEGIN {        for ( $^O, 'UNIX' ) {               my
$class = join '::', __PACKAGE__, $_;               return @ISA = ($class)
if eval "require $class;";       }       die 'failed to load platform
specific resolver component';}*
The program works, so I created the executable to make an easier
deployment...
but I am surprised to see that it fails with the message: *failed to load
platform specific resolver component*

The workaround is replace the BEGIN by something platform dependent:

require Net::DNS::Resolver::UNIX;
@ISA = qw(Net::DNS::Resolver::UNIX);

Any idea?

Cheers,
Peco