$(PERL) util/ck_errf.pl -strict */*.c */*/*.c
$(PERL) util/mkerr.pl -recurse -write
(cd engines; $(MAKE) PERL=$(PERL) errors)
$(PERL) util/ck_errf.pl -strict */*.c */*/*.c
$(PERL) util/mkerr.pl -recurse -write
(cd engines; $(MAKE) PERL=$(PERL) errors)