Devel::TraceUse

Show the modules your program loads, recursively.

An apparently simple program may load a lot of modules. That's useful, but sometimes you may wonder exactly which part of your program loads which module.

Devel::TraceUse can analyze a program to see which part used which module. I recommend using it from the command line:

$ perl -d:TraceUse your_program.pl

This will display a tree of the modules ultimately used to run your program. (It also runs your program with only a little startup cost all the way through to the end.)

Modules used from your_program.pl:

1. strict 1.04, your_program.pl line 1 [main]
2. warnings 1.06, your_program.pl line 2 [main]
3. Getopt::Long 2.37, your_program.pl line 3 [main]
4. vars 1.01, Getopt/Long.pm line 37
5. warnings::register 1.01, vars.pm line 7
6. Exporter 5.62, Getopt/Long.pm line 43
7. Exporter::Heavy 5.62, Exporter.pm line 18
8. constant 1.13, Getopt/Long.pm line 226
9. overload 1.06, Getopt/Long.pm line 1487 [Getopt::Long::CallBack]

INSTALLATION

To install this module, run the following commands:

$ perl Build.PL
$ perl ./Build
$ perl ./Build test
$ sudo perl ./Build install

SUPPORT AND DOCUMENTATION

After installing, you can find documentation for this module with the perldoc command.

$ perldoc Devel::TraceUse

Alternately, read hack #74 in Perl Hacks, published by O'Reilly Media in 2006.

COPYRIGHT AND LICENCE

Copyright (C) 2006 chromatic.

Copyright (C) 2010 Philippe Bruhat (BooK), for the rewrite.

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.