This happens for all backends. AFAIU the reason is that we have a target
m-runner-default (in the case of Moar) in our Makefile. This target is a
dependency for target all and is therefore called when executing make. But
since there is no file m-runner-default this target is considered out of
# New Ticket Created by Will Coleda
# Please include the string: [perl #122649]
# in the subject line of all future correspondence about this issue.
# URL: https://rt.perl.org/Ticket/Display.html?id=122649
after a build:
$ make
/opt/local/bin/perl5.16 -MExtUtils::Command -e rm_f perl6