VERSION_INDICES=versions.idx versions_time.idx binsrc.idx srcbin.idx
+PERL?=perl
+
all: $(VERSION_INDICES)
-$(VERSION_INDICES): %.idx: %.idx_stubs make_index_from_stubs.pl %.idx_stubs/*.stub
+$(VERSION_INDICES): %.idx: %.idx_stubs make_index_from_stubs.pl $(wildcard %.idx_stubs/*.stub)
$(PERL) $(wordlist 2,2,$^) $@ $(wordlist 3,$(words $^),$^)