diff --git a/ChangeLog b/ChangeLog
index 5483ca0f72..b877f1fa59 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Wed Aug 13 23:42:49 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* common.mk (parse.h): fake rule.
+
 Wed Aug 13 23:15:58 2008  Shugo Maeda  <shugo@ruby-lang.org>
 
 	* test/ruby/test_thread.rb (test_list): call Thread.pass to run t1.
diff --git a/common.mk b/common.mk
index 7f6eb193af..3f973054bc 100644
--- a/common.mk
+++ b/common.mk
@@ -2,7 +2,7 @@ bin: $(PROGRAM) $(WPROGRAM)
 lib: $(LIBRUBY)
 dll: $(LIBRUBY_SO)
 
-.SUFFIXES: .inc
+.SUFFIXES: .inc .h .c .y
 
 RUBYLIB       = -
 RUBYOPT       = -
@@ -390,13 +390,16 @@ enc.mk: $(srcdir)/enc/make_encmake.rb $(srcdir)/enc/Makefile.in $(srcdir)/enc/de
 PHONY:
 
 {$(VPATH)}parse.c: {$(VPATH)}parse.y $(srcdir)/tool/ytab.sed
+{$(VPATH)}parse.c: {$(VPATH)}parse.h
+parse.h:
+	@$(NULLCMD)
 
 {$(srcdir)}.y.c:
 	$(YACC) -d $(YFLAGS) -o y.tab.c $<
-	sed -f $(srcdir)/tool/ytab.sed -e "/^#/s!y\.tab\.c!$@!" y.tab.c > $@.new
-	@$(MV) $@.new $@
 	sed -e "/^#/s!y\.tab\.h!$(@:.c=.h)!" y.tab.h > $(@:.c=.h).new
 	@$(MV) $(@:.c=.h).new $(@:.c=.h)
+	sed -f $(srcdir)/tool/ytab.sed -e "/^#/s!y\.tab\.c!$@!" y.tab.c > $@.new
+	@$(MV) $@.new $@
 	@$(RM) y.tab.c y.tab.h
 
 acosh.$(OBJEXT): {$(VPATH)}acosh.c
@@ -431,6 +434,7 @@ win32.$(OBJEXT): {$(VPATH)}win32.c
 
 RUBY_H_INCLUDES = {$(VPATH)}ruby.h {$(VPATH)}config.h {$(VPATH)}defines.h \
 		  {$(VPATH)}intern.h {$(VPATH)}missing.h
+ID_H_INCLUDES = {$(VPATH)}id.h {$(VPATH)}parse.h
 
 array.$(OBJEXT): {$(VPATH)}array.c $(RUBY_H_INCLUDES) \
   {$(VPATH)}st.h {$(VPATH)}util.h
@@ -461,19 +465,19 @@ enumerator.$(OBJEXT): {$(VPATH)}enumerator.c $(RUBY_H_INCLUDES) \
   {$(VPATH)}st.h {$(VPATH)}debug.h {$(VPATH)}node.h
 error.$(OBJEXT): {$(VPATH)}error.c $(RUBY_H_INCLUDES) \
   {$(VPATH)}st.h {$(VPATH)}vm_core.h {$(VPATH)}signal.h {$(VPATH)}node.h \
-  {$(VPATH)}debug.h {$(VPATH)}vm_opts.h {$(VPATH)}id.h {$(VPATH)}parse.c \
+  {$(VPATH)}debug.h {$(VPATH)}vm_opts.h $(ID_H_INCLUDES) \
   {$(VPATH)}thread_$(THREAD_MODEL).h
 eval.$(OBJEXT): {$(VPATH)}eval.c {$(VPATH)}eval_intern.h \
   $(RUBY_H_INCLUDES) {$(VPATH)}st.h {$(VPATH)}node.h \
   {$(VPATH)}util.h {$(VPATH)}signal.h {$(VPATH)}vm_core.h \
-  {$(VPATH)}debug.h {$(VPATH)}vm_opts.h {$(VPATH)}id.h {$(VPATH)}parse.c \
+  {$(VPATH)}debug.h {$(VPATH)}vm_opts.h $(ID_H_INCLUDES) \
   {$(VPATH)}thread_$(THREAD_MODEL).h {$(VPATH)}dln.h \
   {$(VPATH)}eval_error.c {$(VPATH)}eval_safe.c \
   {$(VPATH)}eval_jump.c
 load.$(OBJEXT): {$(VPATH)}load.c {$(VPATH)}eval_intern.h \
   $(RUBY_H_INCLUDES) {$(VPATH)}st.h {$(VPATH)}node.h \
   {$(VPATH)}util.h {$(VPATH)}signal.h {$(VPATH)}vm_core.h \
-  {$(VPATH)}debug.h {$(VPATH)}vm_opts.h {$(VPATH)}id.h {$(VPATH)}parse.c \
+  {$(VPATH)}debug.h {$(VPATH)}vm_opts.h $(ID_H_INCLUDES) \
   {$(VPATH)}thread_$(THREAD_MODEL).h {$(VPATH)}dln.h
 file.$(OBJEXT): {$(VPATH)}file.c $(RUBY_H_INCLUDES) \
   {$(VPATH)}st.h {$(VPATH)}io.h {$(VPATH)}encoding.h {$(VPATH)}oniguruma.h \
@@ -482,7 +486,7 @@ gc.$(OBJEXT): {$(VPATH)}gc.c $(RUBY_H_INCLUDES) \
   {$(VPATH)}st.h {$(VPATH)}signal.h {$(VPATH)}node.h {$(VPATH)}re.h \
   {$(VPATH)}regex.h {$(VPATH)}oniguruma.h {$(VPATH)}io.h \
   {$(VPATH)}encoding.h {$(VPATH)}vm_core.h {$(VPATH)}debug.h \
-  {$(VPATH)}vm_opts.h {$(VPATH)}id.h {$(VPATH)}parse.c \
+  {$(VPATH)}vm_opts.h $(ID_H_INCLUDES) \
   {$(VPATH)}thread_$(THREAD_MODEL).h \
   {$(VPATH)}gc.h {$(VPATH)}eval_intern.h
 hash.$(OBJEXT): {$(VPATH)}hash.c $(RUBY_H_INCLUDES) \
@@ -508,19 +512,19 @@ object.$(OBJEXT): {$(VPATH)}object.c $(RUBY_H_INCLUDES) \
 pack.$(OBJEXT): {$(VPATH)}pack.c $(RUBY_H_INCLUDES) {$(VPATH)}st.h
 parse.$(OBJEXT): {$(VPATH)}parse.c {$(VPATH)}parse.y $(RUBY_H_INCLUDES) \
   {$(VPATH)}st.h {$(VPATH)}node.h {$(VPATH)}encoding.h \
-  {$(VPATH)}oniguruma.h {$(VPATH)}id.h {$(VPATH)}parse.c \
+  {$(VPATH)}oniguruma.h $(ID_H_INCLUDES) \
   {$(VPATH)}regenc.h {$(VPATH)}regex.h {$(VPATH)}util.h \
   {$(VPATH)}lex.c {$(VPATH)}keywords {$(VPATH)}debug.h
 prec.$(OBJEXT): {$(VPATH)}prec.c $(RUBY_H_INCLUDES) {$(VPATH)}st.h
 proc.$(OBJEXT): {$(VPATH)}proc.c {$(VPATH)}eval_intern.h \
   $(RUBY_H_INCLUDES) {$(VPATH)}st.h {$(VPATH)}node.h \
   {$(VPATH)}util.h {$(VPATH)}signal.h {$(VPATH)}vm_core.h \
-  {$(VPATH)}debug.h {$(VPATH)}vm_opts.h {$(VPATH)}id.h {$(VPATH)}parse.c \
+  {$(VPATH)}debug.h {$(VPATH)}vm_opts.h $(ID_H_INCLUDES) \
   {$(VPATH)}thread_$(THREAD_MODEL).h {$(VPATH)}dln.h {$(VPATH)}gc.h
 process.$(OBJEXT): {$(VPATH)}process.c $(RUBY_H_INCLUDES) {$(VPATH)}st.h \
   {$(VPATH)}signal.h {$(VPATH)}vm_core.h {$(VPATH)}util.h \
   {$(VPATH)}node.h {$(VPATH)}debug.h {$(VPATH)}vm_opts.h \
-  {$(VPATH)}id.h {$(VPATH)}parse.c \
+  $(ID_H_INCLUDES) \
   {$(VPATH)}thread_$(THREAD_MODEL).h
 random.$(OBJEXT): {$(VPATH)}random.c $(RUBY_H_INCLUDES) \
   {$(VPATH)}st.h
@@ -554,11 +558,11 @@ ruby.$(OBJEXT): {$(VPATH)}ruby.c $(RUBY_H_INCLUDES) \
   {$(VPATH)}st.h {$(VPATH)}node.h {$(VPATH)}encoding.h \
   {$(VPATH)}oniguruma.h {$(VPATH)}eval_intern.h {$(VPATH)}util.h \
   {$(VPATH)}signal.h {$(VPATH)}vm_core.h {$(VPATH)}debug.h \
-  {$(VPATH)}vm_opts.h {$(VPATH)}id.h {$(VPATH)}parse.c \
+  {$(VPATH)}vm_opts.h $(ID_H_INCLUDES) \
   {$(VPATH)}thread_$(THREAD_MODEL).h {$(VPATH)}dln.h
 signal.$(OBJEXT): {$(VPATH)}signal.c $(RUBY_H_INCLUDES) \
   {$(VPATH)}st.h {$(VPATH)}signal.h {$(VPATH)}node.h {$(VPATH)}vm_core.h \
-  {$(VPATH)}debug.h {$(VPATH)}vm_opts.h {$(VPATH)}id.h {$(VPATH)}parse.c \
+  {$(VPATH)}debug.h {$(VPATH)}vm_opts.h $(ID_H_INCLUDES) \
   {$(VPATH)}thread_$(THREAD_MODEL).h
 sprintf.$(OBJEXT): {$(VPATH)}sprintf.c $(RUBY_H_INCLUDES) {$(VPATH)}st.h \
   {$(VPATH)}re.h {$(VPATH)}regex.h {$(VPATH)}oniguruma.h \
@@ -573,14 +577,14 @@ struct.$(OBJEXT): {$(VPATH)}struct.c $(RUBY_H_INCLUDES) \
 thread.$(OBJEXT): {$(VPATH)}thread.c {$(VPATH)}eval_intern.h \
   $(RUBY_H_INCLUDES) {$(VPATH)}st.h {$(VPATH)}node.h \
   {$(VPATH)}util.h {$(VPATH)}signal.h {$(VPATH)}vm_core.h \
-  {$(VPATH)}debug.h {$(VPATH)}vm_opts.h {$(VPATH)}id.h {$(VPATH)}parse.c \
+  {$(VPATH)}debug.h {$(VPATH)}vm_opts.h $(ID_H_INCLUDES) \
   {$(VPATH)}thread_$(THREAD_MODEL).h {$(VPATH)}dln.h {$(VPATH)}vm.h \
   {$(VPATH)}gc.h {$(VPATH)}thread_$(THREAD_MODEL).c
 transcode.$(OBJEXT): {$(VPATH)}transcode.c $(RUBY_H_INCLUDES) {$(VPATH)}st.h \
   {$(VPATH)}encoding.h {$(VPATH)}oniguruma.h {$(VPATH)}transcode_data.h
 cont.$(OBJEXT): {$(VPATH)}cont.c $(RUBY_H_INCLUDES) \
   {$(VPATH)}st.h {$(VPATH)}vm_core.h {$(VPATH)}signal.h {$(VPATH)}node.h \
-  {$(VPATH)}debug.h {$(VPATH)}vm_opts.h {$(VPATH)}id.h {$(VPATH)}parse.c \
+  {$(VPATH)}debug.h {$(VPATH)}vm_opts.h $(ID_H_INCLUDES) \
   {$(VPATH)}thread_$(THREAD_MODEL).h {$(VPATH)}gc.h \
   {$(VPATH)}eval_intern.h {$(VPATH)}util.h {$(VPATH)}dln.h
 time.$(OBJEXT): {$(VPATH)}time.c $(RUBY_H_INCLUDES) \
@@ -595,13 +599,13 @@ version.$(OBJEXT): {$(VPATH)}version.c $(RUBY_H_INCLUDES) {$(VPATH)}st.h \
 compile.$(OBJEXT): {$(VPATH)}compile.c $(RUBY_H_INCLUDES) {$(VPATH)}st.h \
   {$(VPATH)}node.h {$(VPATH)}vm_core.h \
   {$(VPATH)}signal.h {$(VPATH)}debug.h {$(VPATH)}vm_opts.h \
-  {$(VPATH)}id.h {$(VPATH)}parse.c \
+  $(ID_H_INCLUDES) \
   {$(VPATH)}thread_$(THREAD_MODEL).h {$(VPATH)}compile.h \
   {$(VPATH)}insns.inc {$(VPATH)}insns_info.inc {$(VPATH)}optinsn.inc
 iseq.$(OBJEXT): {$(VPATH)}iseq.c $(RUBY_H_INCLUDES) \
   {$(VPATH)}st.h {$(VPATH)}node.h {$(VPATH)}gc.h {$(VPATH)}vm_core.h \
   {$(VPATH)}signal.h {$(VPATH)}debug.h {$(VPATH)}vm_opts.h \
-  {$(VPATH)}id.h {$(VPATH)}parse.c \
+  $(ID_H_INCLUDES) \
   {$(VPATH)}thread_$(THREAD_MODEL).h {$(VPATH)}insns.inc \
   {$(VPATH)}insns_info.inc {$(VPATH)}node_name.inc
 vm.$(OBJEXT): {$(VPATH)}vm.c $(RUBY_H_INCLUDES) \
@@ -609,7 +613,7 @@ vm.$(OBJEXT): {$(VPATH)}vm.c $(RUBY_H_INCLUDES) \
   {$(VPATH)}oniguruma.h {$(VPATH)}gc.h {$(VPATH)}insnhelper.h \
   {$(VPATH)}eval_intern.h {$(VPATH)}util.h {$(VPATH)}signal.h \
   {$(VPATH)}vm_core.h {$(VPATH)}debug.h {$(VPATH)}vm_opts.h \
-  {$(VPATH)}id.h {$(VPATH)}parse.c \
+  $(ID_H_INCLUDES) \
   {$(VPATH)}thread_$(THREAD_MODEL).h {$(VPATH)}dln.h {$(VPATH)}vm.h \
   {$(VPATH)}vm_insnhelper.c {$(VPATH)}insns.inc {$(VPATH)}vm_evalbody.c \
   {$(VPATH)}vmtc.inc {$(VPATH)}vm.inc {$(VPATH)}insns.def \
@@ -617,34 +621,34 @@ vm.$(OBJEXT): {$(VPATH)}vm.c $(RUBY_H_INCLUDES) \
 vm_dump.$(OBJEXT): {$(VPATH)}vm_dump.c $(RUBY_H_INCLUDES) {$(VPATH)}st.h \
   {$(VPATH)}node.h {$(VPATH)}vm_core.h \
   {$(VPATH)}signal.h {$(VPATH)}debug.h {$(VPATH)}vm_opts.h \
-  {$(VPATH)}id.h {$(VPATH)}parse.c \
+  $(ID_H_INCLUDES) \
   {$(VPATH)}thread_$(THREAD_MODEL).h {$(VPATH)}vm.h
 debug.$(OBJEXT): {$(VPATH)}debug.c $(RUBY_H_INCLUDES) \
   {$(VPATH)}st.h {$(VPATH)}encoding.h {$(VPATH)}oniguruma.h \
   {$(VPATH)}debug.h {$(VPATH)}node.h {$(VPATH)}vm_core.h \
-  {$(VPATH)}signal.h {$(VPATH)}vm_opts.h {$(VPATH)}id.h {$(VPATH)}parse.c \
+  {$(VPATH)}signal.h {$(VPATH)}vm_opts.h $(ID_H_INCLUDES) \
   {$(VPATH)}thread_$(THREAD_MODEL).h
 blockinlining.$(OBJEXT): {$(VPATH)}blockinlining.c $(RUBY_H_INCLUDES) \
   {$(VPATH)}st.h {$(VPATH)}node.h {$(VPATH)}vm_core.h \
   {$(VPATH)}signal.h {$(VPATH)}debug.h {$(VPATH)}vm_opts.h \
-  {$(VPATH)}id.h {$(VPATH)}parse.c \
+  $(ID_H_INCLUDES) \
   {$(VPATH)}thread_$(THREAD_MODEL).h
 id.$(OBJEXT): {$(VPATH)}id.c $(RUBY_H_INCLUDES) \
-  {$(VPATH)}st.h {$(VPATH)}id.h {$(VPATH)}parse.c
+  {$(VPATH)}st.h $(ID_H_INCLUDES)
 miniprelude.$(OBJEXT): {$(VPATH)}miniprelude.c $(RUBY_H_INCLUDES) \
   {$(VPATH)}st.h {$(VPATH)}vm_core.h {$(VPATH)}signal.h \
   {$(VPATH)}node.h {$(VPATH)}debug.h {$(VPATH)}vm_opts.h \
-  {$(VPATH)}id.h {$(VPATH)}parse.c \
+  $(ID_H_INCLUDES) \
   {$(VPATH)}thread_$(THREAD_MODEL).h
 prelude.$(OBJEXT): {$(VPATH)}prelude.c $(RUBY_H_INCLUDES) {$(VPATH)}st.h \
   {$(VPATH)}vm_core.h {$(VPATH)}signal.h \
   {$(VPATH)}node.h {$(VPATH)}debug.h {$(VPATH)}vm_opts.h \
-  {$(VPATH)}id.h {$(VPATH)}parse.c \
+  $(ID_H_INCLUDES) \
   {$(VPATH)}thread_$(THREAD_MODEL).h
 golf_prelude.$(OBJEXT): {$(VPATH)}golf_prelude.c $(RUBY_H_INCLUDES) \
   {$(VPATH)}st.h {$(VPATH)}vm_core.h {$(VPATH)}signal.h \
   {$(VPATH)}node.h {$(VPATH)}debug.h {$(VPATH)}vm_opts.h \
-  {$(VPATH)}id.h {$(VPATH)}parse.c \
+  $(ID_H_INCLUDES) \
   {$(VPATH)}thread_$(THREAD_MODEL).h
 goruby.$(OBJEXT): {$(VPATH)}goruby.c {$(VPATH)}main.c $(RUBY_H_INCLUDES) {$(VPATH)}st.h