Makefile.in: by exts.mk

* Makefile.in (clean-ext): recurse by exts.mk in parallel first.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57729 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

Makefile.in

@@ -417,6 +417,7 @@ distclean-local::
 	-$(Q)$(RMDIRS) $(arch_hdrdir)/ruby 2> /dev/null || true
 
 clean-ext distclean-ext realclean-ext::
+	@[ -f $(EXTS_MK) ] && $(MAKE) -f $(EXTS_MK) $(@:-ext=)
 	@cd ext 2>/dev/null || exit 0; set dummy `echo "${EXTS}" | tr , ' '`; shift; \
 	test "$$#" = 0 && set .; \
 	set dummy `\

template/exts.mk.tmpl

@@ -91,6 +91,9 @@ end
 % unless macros["MFLAGS"].empty?
 MFLAGS =<%= macros["MFLAGS"].fold(column) %>
 % end
+% RbConfig::MAKEFILE_CONFIG.keys.grep(/RM/) do |k|
+<%=k%> = <%=RbConfig::MAKEFILE_CONFIG[k]%>
+% end
 
 extensions =<%= macros["extensions"].fold(column) %>
 EXTOBJS =<%= macros["EXTOBJS"].fold(column) %>
@@ -125,7 +128,13 @@ ext/extinit.<%=objext%>:
 
 % targets.product(macros["extensions"].map {|e|e.chomp("/.")}) do |t, e|
 <%=e%>/<%=t%>:
+%   if /^(dist|real)clean$/ =~ t
+	$(ECHO) $(@F)ing $(@D)
+%   end
 	$(Q)<%= submake %><%=mflags%> V=$(V) $(@F)
+%   if /^(dist|real)clean$/ =~ t
+	$(Q)$(RMDIRS) $(@D)
+%   end
 % end
 
 extso: