VPATH for ripper

* common.mk (ripper.c): pass the build directory path for id.h
  which may be generated there.

* ext/ripper/depend (ripper.y): search the top build directory and
  the top source directory.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59335 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

common.mk

@@ -977,10 +977,10 @@ $(REVISION_H): $(srcdir)/version.h $(srcdir)/tool/file2lastrev.rb $(REVISION_FOR
 
 $(srcdir)/ext/ripper/ripper.c: $(srcdir)/parse.y id.h
 	$(ECHO) generating $@
-	$(Q) $(CHDIR) $(@D) && \
+	$(Q) VPATH=$${PWD-`pwd`} && $(CHDIR) $(@D) && \
 	sed /AUTOGENERATED/q depend | \
 	$(exec) $(MAKE) -f - $(mflags) \
-		Q=$(Q) ECHO=$(ECHO) RM="$(RM)" top_srcdir=../.. srcdir=. VPATH=../.. \
+		Q=$(Q) ECHO=$(ECHO) RM="$(RM)" top_srcdir=../.. srcdir=. VPATH="$${VPATH}" \
 		RUBY="$(BASERUBY)" PATH_SEPARATOR="$(PATH_SEPARATOR)"
 
 $(srcdir)/ext/json/parser/parser.c: $(srcdir)/ext/json/parser/parser.rl

ext/ripper/depend

@@ -20,7 +20,8 @@ static: check
 
 ripper.y: $(srcdir)/tools/preproc.rb $(top_srcdir)/parse.y
 	$(ECHO) extracting $@ from $(top_srcdir)/parse.y
-	$(Q) $(RUBY) $(top_srcdir)/tool/id2token.rb --path-separator=.$(PATH_SEPARATOR)./ --vpath=$(VPATH) id.h $(top_srcdir)/parse.y > ripper.tmp.y
+	$(Q) $(RUBY) $(top_srcdir)/tool/id2token.rb --path-separator=.$(PATH_SEPARATOR)./ \
+		--vpath=$(VPATH)$(PATH_SEPARATOR)$(top_srcdir) id.h $(top_srcdir)/parse.y > ripper.tmp.y
 	$(Q) $(RUBY) $(srcdir)/tools/preproc.rb ripper.tmp.y --output=$@
 	$(Q) $(RM) ripper.tmp.y