diff --git a/ChangeLog b/ChangeLog
index b0ce1d3f50..e706a9b501 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,14 @@
+Wed Sep 11 11:33:40 2002  NAKAMURA Usaku <usa@ruby-lang.org>
+
+	* bcc32/Makefile.sub: remove unnecessary `.dll' from filename of 
+	  dll's resource file.
+
+	* cygwin/GNUmakefile.in: ditto. [ruby-dev:17103]
+
+	* win32/Makefile.sub: ditto. [ruby-dev:17103]
+
+	* win32/resource.rb: ditto. [ruby-dev:17103]
+
 Wed Sep 11 09:59:46 2002  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
 
 	* io.c (rb_io_wait_readable): added.
diff --git a/bcc32/Makefile.sub b/bcc32/Makefile.sub
index 1bdb70b712..9a1023aad2 100644
--- a/bcc32/Makefile.sub
+++ b/bcc32/Makefile.sub
@@ -423,7 +423,7 @@ distclean-local:	clean-local
 		@if exist pub.def del pub.def
 		@if exist $(RUBY_INSTALL_NAME).rc del $(RUBY_INSTALL_NAME).rc
 		@if exist $(RUBYW_INSTALL_NAME).rc del $(RUBYW_INSTALL_NAME).rc
-		@if exist $(LIBRUBY_SO).rc del $(LIBRUBY_SO).rc
+		@if exist $(RUBY_SO_NAME).rc del $(RUBY_SO_NAME).rc
 		@if exist $(PROGRAM) del $(PROGRAM)
 		@if exist $(WPROGRAM) del $(WPROGRAM)
 		@if exist $(LIBRUBY_SO) del $(LIBRUBY_SO)
@@ -446,11 +446,11 @@ rbconfig.rb:	miniruby$(EXEEXT) config.status
 			-install_name=$(RUBY_INSTALL_NAME) \
 			-so_name=$(RUBY_SO_NAME) rbconfig.rb
 
-$(RUBY_INSTALL_NAME).rc $(RUBYW_INSTALL_NAME).rc $(LIBRUBY_SO).rc: rbconfig.rb
+$(RUBY_INSTALL_NAME).rc $(RUBYW_INSTALL_NAME).rc $(RUBY_SO_NAME).rc: rbconfig.rb
 		@.\miniruby$(EXEEXT) $(srcdir)win32/resource.rb \
 			-ruby_name=$(RUBY_INSTALL_NAME) \
 			-rubyw_name=$(RUBYW_INSTALL_NAME) \
-			-so_name=$(LIBRUBY_SO) \
+			-so_name=$(RUBY_SO_NAME) \
 			. $(icondirs) $(srcdir)/win32
 
 #config.status:	$(srcdir)configure
diff --git a/cygwin/GNUmakefile.in b/cygwin/GNUmakefile.in
index 3fd5b5ad53..b9a436544c 100644
--- a/cygwin/GNUmakefile.in
+++ b/cygwin/GNUmakefile.in
@@ -17,19 +17,19 @@ else
 endif
 WPROGRAM = $(RUBYW_INSTALL_NAME)$(EXEEXT)
 RUBYDEF = $(RUBY_INSTALL_NAME).def
-SOLIBS := $(LIBRUBY_SO).res.@OBJEXT@ $(SOLIBS)
+SOLIBS := $(RUBY_SO_NAME).res.@OBJEXT@ $(SOLIBS)
 EXTOBJS += $(@:$(EXEEXT)=.res.@OBJEXT@)
 
-$(LIBRUBY_SO): $(RUBYDEF) $(LIBRUBY_SO).res.@OBJEXT@ $(RUBY_EXP)
+$(LIBRUBY_SO): $(RUBYDEF) $(RUBY_SO_NAME).res.@OBJEXT@ $(RUBY_EXP)
 $(LIBRUBY): $(LIBRUBY_SO)
 
 %.res.@OBJEXT@: %.rc
 	@WINDRES@ --include-dir . --include-dir $(<D) --include-dir $(srcdir)/win32 $< $@
 
-$(RUBY_INSTALL_NAME).rc $(RUBYW_INSTALL_NAME).rc $(LIBRUBY_SO).rc: rbconfig.rb
+$(RUBY_INSTALL_NAME).rc $(RUBYW_INSTALL_NAME).rc $(RUBY_SO_NAME).rc: rbconfig.rb
 	@@MINIRUBY@ $(srcdir)/win32/resource.rb \
 	  -ruby_name=$(RUBY_INSTALL_NAME) -rubyw_name=$(RUBYW_INSTALL_NAME) \
-	  -so_name=$(LIBRUBY_SO) \
+	  -so_name=$(RUBY_SO_NAME) \
 	  . $(icondirs) $(srcdir)/win32
 
 $(PROGRAM): $(RUBY_INSTALL_NAME).res.@OBJEXT@
diff --git a/win32/Makefile.sub b/win32/Makefile.sub
index f2eebca708..b2ba3187a6 100644
--- a/win32/Makefile.sub
+++ b/win32/Makefile.sub
@@ -368,8 +368,8 @@ $(LIBRUBY_A):	$(OBJS) dmyext.obj
 $(LIBRUBY):	$(RUBYDEF)
 		$(AR) -out:$@ -def:$(RUBYDEF) -machine:$(MACHINE)
 
-$(LIBRUBY_SO):	$(LIBRUBY_A) $(EXTOBJS) $(RUBYDEF) $@.res
-		$(CC) $(LDFLAGS) $(MAINOBJ) $(EXTOBJS) $(LIBRUBY_A) $@.res $(LIBS) \
+$(LIBRUBY_SO):	$(LIBRUBY_A) $(EXTOBJS) $(RUBYDEF) $*.res
+		$(CC) $(LDFLAGS) $(MAINOBJ) $(EXTOBJS) $(LIBRUBY_A) $*.res $(LIBS) \
 			-Fe$@ -link -dll -def:$(RUBYDEF)
 
 $(RUBYDEF):	$(LIBRUBY_A) miniruby$(EXEEXT)
@@ -416,7 +416,7 @@ distclean-local:	clean-local
 		@if exist $(RUBYDEF) del $(RUBYDEF)
 		@if exist $(RUBY_INSTALL_NAME).rc del $(RUBY_INSTALL_NAME).rc
 		@if exist $(RUBYW_INSTALL_NAME).rc del $(RUBYW_INSTALL_NAME).rc
-		@if exist $(LIBRUBY_SO).rc del $(LIBRUBY_SO).rc
+		@if exist $(RUBY_SO_NAME).rc del $(RUBY_SO_NAME).rc
 		@if exist $(PROGRAM) del $(PROGRAM)
 		@if exist $(WPROGRAM) del $(WPROGRAM)
 		@if exist $(LIBRUBY_SO) del $(LIBRUBY_SO)
@@ -439,11 +439,11 @@ rbconfig.rb:	miniruby$(EXEEXT) config.status
 			-install_name=$(RUBY_INSTALL_NAME) \
 			-so_name=$(RUBY_SO_NAME) rbconfig.rb
 
-$(RUBY_INSTALL_NAME).rc $(RUBYW_INSTALL_NAME).rc $(LIBRUBY_SO).rc: rbconfig.rb
+$(RUBY_INSTALL_NAME).rc $(RUBYW_INSTALL_NAME).rc $(RUBY_SO_NAME).rc: rbconfig.rb
 		@.\miniruby$(EXEEXT) $(srcdir)/win32/resource.rb \
 			-ruby_name=$(RUBY_INSTALL_NAME) \
 			-rubyw_name=$(RUBYW_INSTALL_NAME) \
-			-so_name=$(LIBRUBY_SO) \
+			-so_name=$(RUBY_SO_NAME) \
 			. $(icondirs) $(srcdir)/win32
 
 {$(srcdir)/missing}.c.obj:
diff --git a/win32/resource.rb b/win32/resource.rb
index d29691ebf8..e8a64a6d17 100644
--- a/win32/resource.rb
+++ b/win32/resource.rb
@@ -8,7 +8,7 @@ fversion = "#{CONFIG['MAJOR']},#{CONFIG['MINOR']},#{CONFIG['TEENY']},0"
 
 $ruby_name ||= CONFIG["RUBY_INSTALL_NAME"]
 $rubyw_name ||= CONFIG["RUBYW_INSTALL_NAME"] || $ruby_name.sub(/ruby/, '\&w')
-$so_name ||= CONFIG["RUBY_SO_NAME"] + '.dll'
+$so_name ||= CONFIG["RUBY_SO_NAME"]
 
 icons = {}
 def icons.find(path)
@@ -49,7 +49,7 @@ end
 [ # base name    extension         file type  icons
   [$ruby_name,   CONFIG["EXEEXT"], 'VFT_APP', ruby_icon],
   [$rubyw_name,  CONFIG["EXEEXT"], 'VFT_APP', rubyw_icon],
-  [$so_name,     '',               'VFT_DLL', dll_icons],
+  [$so_name,     '.dll',           'VFT_DLL', dll_icons],
 ].each do |base, ext, type, icons|
   open(base + '.rc', "w") { |f|
     f.binmode if /mingw/ =~ RUBY_PLATFORM