Question

I have these three files

Constants/Requests.pm

#!/usr/bin/perl

use strict;

use base 'Exporter';

use constant MR_NOACTION     =>   0;
use constant MR_START        =>   1;
use constant MR_STOP         =>   2;

our @EXPORT = (
    'MR_NOACTION',
    'MR_START',
    'MR_STOP'
);
1;

JobManDB.pm

#!/usr/bin/perl

package JobManDB;

use strict;
use warnings;

use constant WEB_DB_FILE    => "db/web.db";
use constant MASTER_DB_FILE => "db/master.db";

use Constants::Requests;

sub new
{
    print "Ahoj: " . MR_NOACTION . "\n";
    ...

Master.pm

#!/usr/bin/perl

package Master;

use strict;
use warnings;

use Time::HiRes qw( usleep );
use Data::Dumper;

use JobManDB;                   # use #1

use Constants::Requests;  # use #2

...

Program as posted is working, if but if I swith use #1 with use #2 the compilation fails with error:

Bareword "MR_NOACTION" not allowed while "strict subs" in use at lib/JobManDB.pm line 26.

(line 26 is the line in ‘new’ subroutine). I would like to know why. Thank you.

EDIT:
Another issue is, that if I add line package Requests; at the beginning of Requests.pm, the compilation fails with the same error but independently on order of ‘uses’.

Answer 1

The Requests.pm file is missing its package declaration, package Constants::Requests;.