common.mk: fix VPATH

* common.mk (ID_H_TARGET, parse.h): fix VPATH rules with nmake.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36724 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

common.mk

@@ -27,7 +27,7 @@ REVISION_H    = ./.revision.time
 PLATFORM_D    = ./$(PLATFORM_DIR)/.time
 RDOCOUT       = $(EXTOUT)/rdoc
 CAPIOUT       = doc/capi
-ID_H_TARGET   = ./.id.h.time
+ID_H_TARGET   = {$(VPATH)}./.id.h.time
 
 DMYEXT	      = dmyext.$(OBJEXT)
 NORMALMAINOBJ = main.$(OBJEXT)
@@ -562,7 +562,7 @@ $(ENC_MK): $(srcdir)/enc/make_encmake.rb $(srcdir)/enc/Makefile.in $(srcdir)/enc
 PHONY:
 
 {$(VPATH)}parse.c: {$(VPATH)}parse.y $(srcdir)/tool/ytab.sed
-parse.h {$(VPATH)}parse.h: {$(VPATH)}parse.c
+{$(VPATH)}parse.h: {$(VPATH)}parse.c
 
 {$(srcdir)}.y.c:
 	$(ECHO) generating $@
@@ -852,7 +852,7 @@ incs: $(INSNS) {$(VPATH)}node_name.inc {$(VPATH)}encdb.h {$(VPATH)}transdb.h {$(
 
 insns: $(INSNS)
 
-$(ID_H_TARGET): parse.h $(srcdir)/tool/generic_erb.rb $(srcdir)/template/id.h.tmpl
+$(ID_H_TARGET): {$(VPATH)}parse.h $(srcdir)/tool/generic_erb.rb $(srcdir)/template/id.h.tmpl
 	$(ECHO) generating id.h
 	$(Q) $(BASERUBY) $(srcdir)/tool/generic_erb.rb --if-change --output=id.h \
 		--timestamp=$@ \