common.mk: fix conflict of version.i

* common.mk ($(arch)-fake.rb): read from STDIN instead of creating
  version.i, to get rid of conflict with tool/update-deps.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51419 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

.gitignore

@@ -106,7 +106,6 @@ y.tab.c
 /uncommon.mk
 /verconf.h
 /verconf.mk
-/version.i
 /web
 /yasmdata.rb
 

common.mk

@@ -549,14 +549,13 @@ fake: $(CROSS_COMPILING)-fake
 yes-fake: $(arch)-fake.rb $(RBCONFIG) PHONY
 no-fake -fake: PHONY
 
-$(arch)-fake.rb: $(srcdir)/template/fake.rb.in $(srcdir)/tool/generic_erb.rb version.i
-	$(ECHO) generating $@
-	$(Q)$(exec) $(BOOTSTRAPRUBY) "$(srcdir)/tool/generic_erb.rb" -c -o $@ "$(srcdir)/template/fake.rb.in" \
-		i=version.i srcdir="$(srcdir)" BASERUBY="$(BASERUBY)"
-
-# .i really doesn't depend on .o, just ensure newer than headers which
+# really doesn't depend on .o, just ensure newer than headers which
 # version.o depends on.
-version.i: version.$(OBJEXT)
+$(arch)-fake.rb: $(srcdir)/template/fake.rb.in $(srcdir)/tool/generic_erb.rb version.$(OBJEXT)
+	$(ECHO) generating $@
+	$(Q) $(CPP) $(warnflags) $(XCFLAGS) $(CPPFLAGS) "$(srcdir)/version.c" | \
+	$(BOOTSTRAPRUBY) "$(srcdir)/tool/generic_erb.rb" -o $@ "$(srcdir)/template/fake.rb.in" \
+		i=- srcdir="$(srcdir)" BASERUBY="$(BASERUBY)"
 
 btest: $(TEST_RUNNABLE)-btest
 no-btest: PHONY

template/fake.rb.in

@@ -5,8 +5,8 @@ while /\A(\w+)=(.*)/ =~ ARGV[0]
   arg[$1].tr!(File::ALT_SEPARATOR, File::SEPARATOR) if File::ALT_SEPARATOR
   ARGV.shift
 end
-if arg['i']
-  src = File.read(arg['i'])
+if inc = arg['i']
+  src = inc == '-' ? STDIN.read : File.read(inc)
   arg['versions'] = version = {}
   File.read(File.join(arg['srcdir'], 'version.c')).
     scan(/rb_define_global_const\("(RUBY_\w+)",[^;]*?\bMK(?:INT|STR)\(([^()]*)\)/m) do |n, v|