Move duplicate dependencies

common.mk

@@ -839,6 +839,8 @@ extconf: $(PREP)
 	$(Q) $(MAKEDIRS) "$(EXTCONFDIR)"
 	$(RUNRUBY) -C "$(EXTCONFDIR)" $(EXTCONF) $(EXTCONFARGS)
 
+rbconfig.rb: $(RBCONFIG)
+
 $(RBCONFIG): $(tooldir)/mkconfig.rb config.status $(srcdir)/version.h
 	$(Q)$(BOOTSTRAPRUBY) -n \
 	-e 'BEGIN{version=ARGV.shift;mis=ARGV.dup}' \

template/Makefile.in

@@ -355,10 +355,6 @@ pre-install-local:: pkgconfig-data
 ruby-runner.h: template/ruby-runner.h.in config.status
 		@./config.status --file=$@:$(srcdir)/template/$(@F).in
 
-$(RBCONFIG): $(PREP)
-
-rbconfig.rb: $(RBCONFIG)
-
 install-cross: $(arch)-fake.rb $(RBCONFIG) rbconfig.rb $(arch_hdrdir)/ruby/config.h \
 	$(LIBRUBY_A) $(LIBRUBY_SO) $(ARCHFILE) pkgconfig-data
 	$(ECHO) installing cross-compiling stuff
@@ -671,7 +667,6 @@ $(INSNS): $(srcdir)/insns.def vm_opts.h \
 	$(ECHO) generating $@
 	$(Q) $(BASERUBY) -Ku $(tooldir)/insns2vm.rb $(INSNS2VMOPT) $@
 
-verconf.h: $(RBCONFIG)
 
 loadpath: verconf.h
 	@$(CPP) $(XCFLAGS) $(CPPFLAGS) $(srcdir)/loadpath.c | \

win32/Makefile.sub

@@ -1211,8 +1211,6 @@ clean-enc distclean-enc realclean-enc:
 	-$(Q)$(MAKE) $(MAKE_ENC) $(@:-enc=)
 !endif
 
-$(RBCONFIG): $(PREP)
-
 $(RCFILES): $(RBCONFIG) $(srcdir)/revision.h $(srcdir)/win32/resource.rb
 		@$(MINIRUBY) $(srcdir)/win32/resource.rb \
 			-ruby_name=$(RUBY_INSTALL_NAME) \