Perl include file dynamically

Question

I have a doubt in perl , I need to get filename in command line arguments/switches/options and based on that i need to include/require/use that file in my script. So by using that getopt variable am able to get it done. However if i have used "use strict" in my script i could not get it. Please help on this

I tried as follows and its working

base.pm:

our $def_name = "me";

main.pl:

my $name = "mathlib.pm";
require $name;
print $def_name;

When i include the follwoing lines in the main.pl and base.pm,

use strict;
use warnings;

I am getting error,

Global symbol "$def_name" requires explicit package name .
Execution of main.pl aborted due to compilation errors.

Did you mean for base.pm and mathlib.pm to be different? — Barmar
– Barmar, Commented Aug 16, 2013 at 9:25

Matthew Walton · Accepted Answer · 2013-08-16 09:38:03Z

1

$def_name hasn't been exported from mathlib.pm, it's a package variable not a global. $mathlib::def_name will work, or you can use the Exporter module to export it into the namespace of any module which uses it.

answered Aug 16, 2013 at 9:38

Matthew Walton

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4 Comments

user2688842 Over a year ago

Name "mathlib::def_name" used only once: possible typo at main.pl line 8.

user2688842 Over a year ago

I tried with the following, print $mathlib::def_name; but its showing the err Name "mathlib::def_name" used only once: possible typo at main.pl

Matthew Walton Over a year ago

Does mathlib.pm have a package declaration at the top, i.e. package mathlib;?

user2688842 Over a year ago

thanks for the help. i tried as in the link mentioned by Himanshu. it helped. thank u

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