Several years and several Perl releases later... I just tested -Duseshrplib in IRIX 6.5, with the latest "bleadperl", and the -Duseshrplib seems to work. (One does need to set the env var LD_LIBRARYN32_PATH appropriately for the libperl.so to be found, of course.) So marking this as resolved. --- via perlbug: queue: perl5 status: open https://rt.perl.org/Ticket/Display.html?id=39797