Consider this structure: 
Generate[.pl]
pm/Foo.pm
pm/Bar.pm

[download]
Generate is using both Foo and Bar: 
use Foo;
use Bar;

[download]
Foo also uses Bar. If I put 'use Bar;' in Foo, however, I get: 
ServerDude-2:/www/cgi/jenny rip$ ./Generate types
Subroutine LWXBar redefined at pm/Bar.pm line 73.
Undefined subroutine &Foo::LWXBar called at pm/Foo.pm line 116.
ServerDude-2:/www/cgi/jenny rip$

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So, in one run, it is complaining that the undefined sub has been redefined.

If I leave the 'use Bar;' out of Foo.pm, then it simply dies with the undefined sub &Foo::LWXBar() message.

I can fqualify &Bar::LWXBar() in Foo.pm and it works: 
ServerDude-2:/www/cgi/jenny rip$ ./Generate types
Undefined subroutine &main::LWXBar called at ./Generate line 89.
ServerDude-2:/www/cgi/jenny rip$

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As you can see it has now proceeded beyond the &Bar::LWXBar() in Foo, but it's tanked in the main script, again with an undefined LWXBar sub.

If I try to fqualify it in the main script, I get 
ServerDude-2:/www/cgi/jenny rip$ ./Generate types
Undefined subroutine &Bar::LWXBar called at ./Generate line 89.

[download]
Thoughts? Suggestions?

BTW, I have a third module, pm/Baz.pm. It also uses LWXBar -- unqualified -- without any trouble at all.

All three modules use BEGIN blocks to set 'use Exporter ()', as copied (and massaged) from the Perl docs (this is "Foo": 
BEGIN {
  use Exporter   ();
  our ($VERSION, @ISA, @EXPORT);

  # set the version for version checking
  $VERSION     = "01.f";

  @ISA         = qw(Exporter);
  @EXPORT      = qw(&GeneratorConfig &Generate
                    &GetWidthFromType &GetWidthFromFormat);
}

[download]
(MacOS 4.11, perl v5.8.8 darwin-2level)

Am I missing something fundamental?

Thanks for any comments,
rip

In reply to Perl complains of redefining undefined module export by WienIsset

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