I am trying to use the Readonly module as recommended by Perl::Critic and it also has good reviews. However I am getting compilation errors. I have tried cutting the file down and sometimes I can get it to compile but this has not actually shed any light on the issue. Obviously I have stared at the documentation until my eyes are sore. An extract of code follows: 
use Readonly;

Readonly::Hash our %__DFV_DEFAULTS => {
                 missing_optional_valid => 1,
                 filters => 'trim',
                 msgs => {
                     any_errors => 'err__',
                     prefix     => 'err_',
                     format => '<span class="dfv-errors">%s</span>',
                 }
};
sub cgiapp_init {
     my $self = shift;

     # Set some defaults for DFV unless they already exist.
     $self->param('dfv_defaults') || $self->param('dfv_defaults', \ %_
+_DFV_DEFAULTS);
     return;
}

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The error is Error: Global symbol "%__DFV_DEFAULTS" requires explicit package name at .....

In reply to Hitting head against wall over Readonly compilation errors by SilasTheMonk

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