Dear Monks:

This is the shortest Perl program I have ever posted to as for advice on:

use Device::USB;

[download]

That's it!

The error is repeated 3 times and says:

 Use of uninitialized value in concatenation (.) or string at /usr/lib/perl5/Device/USB.pm line 10.

Line 9,10,11 of the referenced module say:

  9 use Inline (
  10         C => "DATA",
  11         ($ENV{LIBUSB_LIBDIR}

[download]

I am using Kubuntu desktop 13.10 and I confess I may have screwed up by doing a "cpan install Device::USB". That did not do a complete install. I had forgotten that it should be apt-get install libdevice-usb-perl. I did that and some earlier errors went away, but not this one. So I did and cpan uninstall Device::USB. That did not complete well. I also did an apt-get install libusb-1.0.0, which went well and an apt-get install libusb-1.0.0-dev which told me everything was up to date

I thought it might be that the Inline module is required but not installed. I did a three line program:

use strict;
use warnings;
use Inline;

[download]

and there were no complaints so I have to assume that is not the problem

Your advice is, as always, appreciated, Best regards

In reply to Device::USB gives "Use of uninitialized value in concatenation" error by holandes777

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