| Subject: | distribution includes both a Makefile.PL and Build.PL |
Providing both files is generally not a good idea -- e.g. see http://neilb.org/2015/05/18/two-build-files-considered-harmful.html
Module::Build::Compat especially is a giant bag of razorblades and best avoided. The easiest thing to do is to drop the use of the 'compat' option in Module::Build, but since you're providing a Makefile.PL with no evident loss of functionality, even better would be to drop the use of Module::Build entirely and just use ExtUtils::MakeMaker in Makefile.PL.