use ExtUtils::MakeMaker; # See lib/ExtUtils/MakeMaker.pm for details of how to influence # the contents of the Makefile that is written. WriteMakefile( 'NAME' => 'Crypt::xDBM_File', 'VERSION_FROM' => 'xDBM_File.pm', # finds $VERSION 'PREREQ_PM' => { 'Crypt::Blowfish' => '0', # or a minimum workable version } );