```{index} single: ExtUtils::MY ``` # ExtUtils::MY ExtUtils::MakeMaker subclass for customization ## SYNOPSIS ```perl ## in your Makefile.PL sub MY::whatever { ... } ``` ## DESCRIPTION **FOR INTERNAL USE ONLY** ExtUtils::MY is a subclass of [ExtUtils::MM](MM.md). It is provided in your Makefile.PL for you to add and override MakeMaker functionality. It also provides a convenient alias via the MY class. ExtUtils::MY might turn out to be a temporary solution, but MY won't go away.