Help for this page
sub MY::postamble { ' ... cd mylib && $(MAKE) $(PASSTHRU) '; }
sub MY::postamble { <<'EXA'; ... echo "XXXXXXXXXXXXX pass is '$(PASSTHRU)' for GNU make, this tells + me the target to pass thru '$(MAKECMDGOALS)'" cd mylib && $(MAKE) $(PASSTHRU) EXA