How to find Modules used by a Given Module

[++imanshu]

Is there a module/script that can give the names of all modules a
module/script uses directly or indirectly.

e.g.

% perl magic.pl < Input.pm

GetOpt::Long
MyModule
EveryModule

where Input.pm uses GetOpt::Long and MyModule. MyModule in turn uses
EveryModule. Note that one is a standard module and the other two are
custom modules.

Thanks,
HG

 

[Peter Makholm]

Is there a module/script that can give the names of all modules a
module/script uses directly or indirectly.

The following should give you the list of modules loaded right after
loading the module some::Module:

$ perl -MSome::Module -le 'print for keys %INC'

(Some post processing required)

But this only findes modules which is loaded at the same time as
Some::Module is loaded. Some modules will dynamically load other
modules at runtime. For example trying to print the modules loaded by
DBI wouldn't show any driver modules, which is very much needed by any
normal DBI using script.

//Makholm

 

[++imanshu]

The following should give you the list of modules loaded right after
loading the module some::Module:

  $ perl -MSome::Module -le 'print for keys %INC'

This is wonderful. Thanks

(Some post processing required)

But this only findes modules which is loaded at the same time as
Some::Module is loaded. Some modules will dynamically load other
modules at runtime. For example trying to print the modules loaded by
DBI wouldn't show any driver modules, which is very much needed by any
normal DBI using script.

Yes I don't care about those for now.

Many Thanks
HG