There are several CPAN modules which also contain 'executeables'.. They usually land in the same directory as the perl binary itself. Looking at the Makefile.PL for
Prima (which was the first one I thought of), it does some complicated stuff to put its executeables somewhere useful.. Ah, and looking at
DBI::Shell, it could have avoided all that by using:
EXE_FILES => [ "dbish$ext_pl" ], or similar, that's probably what you want.
C.