common.mk: separate note

* common.mk (build-ext): separate note from building extensions,
  not to be intermingled.  [ruby-core:80759] [Feature #13302]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58414 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

common.mk

@@ -235,6 +235,7 @@ configure-ext: $(EXTS_MK)
 build-ext: $(EXTS_MK)
 	$(Q)$(MAKE) -f $(EXTS_MK) $(mflags) libdir="$(libdir)" LIBRUBY_EXTS=$(LIBRUBY_EXTS) \
 	    EXTENCS="$(ENCOBJS)" UPDATE_LIBRARIES=no $(EXTSTATIC)
+	$(Q)$(MAKE) -f $(EXTS_MK) $(mflags) note
 
 ext/extinit.c: $(srcdir)/template/extinit.c.tmpl
 	$(Q)$(MINIRUBY) $(srcdir)/tool/generic_erb.rb -o $@ -c \

template/exts.mk.tmpl

@@ -46,7 +46,7 @@ Dir.glob("{ext,gems}/*/exts.mk") do |e|
               (?:dist|real)?clean
              ):.+$
            "x) do
-    deps << $&
+    deps << $&.sub(/ +note$/, '')
   end
   s.scan(%r"^note:\n((?:\t.+\n)+)") do |(n)|
     n = n.split(/^/)