It sounds like you've got a rather convoluted setup; often when
things seem difficult in Perl, it's a sign that you may need to
rethink how you're structuring your code. In this case, your
modules.
However, you did ask, so--this seems to work. I've only done
B.pm, not C.pm, because they should be quite similar if I
understand what you're asking.
Here's A.pm (your $i_am_the_problem is now called
$problem):
package A;
use strict;
use vars qw/@EXPORT @ISA $problem/;
use Exporter;
@ISA = qw/Exporter/;
@EXPORT = qw/$problem/;
1;
Here's B.pm:
package B;
use strict;
use vars qw/@ISA @EXPORT/;
use A;
use Exporter;
@ISA = qw/Exporter/;
@EXPORT = qw/foo/;
sub foo { print "problem is $problem\n" }
1;
And here's a small script that sets
$problem, then calls
the exported function
foo:
use A;
use B;
$problem = "bar";
foo();
That said, again: you really may want to rethink your code
design.
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