$ cat Common.pm package Common; use strict; use warnings; use Exporter; our @ISA = qw(Exporter); # borrows import() our @EXPORT = qw(show_here); sub show_here { } 1; $ cat Main.pm package Common; use strict; use warnings; use Common; sub show_me {} 1; #### Main::show_here; # since exported by default by Common.pm Main::show_me; # originally in Main.pm #### package Main; .... use Exporter; use Common; our @ISA = qw(Exporter); # borrows import() our @EXPORT = qw(show_here); # just @Common::Export to export # what ever Common exports. .... sub show_me {} 1; #### use Main; Main::show_me(); show_here()