diff --git a/x11/ruby-gtk/Makefile b/x11/ruby-gtk/Makefile
index ecfb8a55a24d..ae60faf51403 100644
--- a/x11/ruby-gtk/Makefile
+++ b/x11/ruby-gtk/Makefile
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.45 2010/09/07 17:20:27 taca Exp $
+# $NetBSD: Makefile,v 1.46 2010/09/10 13:36:15 taca Exp $
 
 DISTNAME=	ruby-gtk-${VERSION}
 PKGNAME=	${RUBY_PKGPREFIX}-gtk-${VERSION}
@@ -9,17 +9,18 @@ MASTER_SITES=	${MASTER_SITE_SOURCEFORGE:=ruby-gnome/}
 MAINTAINER=	taca@NetBSD.org
 HOMEPAGE=	http://ruby-gnome.sourceforge.net/
 COMMENT=	Ruby interface to Gtk+ toolkits
+LICENSE=	gnu-gpl-v2
+
+PKG_DESTDIR_SUPPORT=	user-destdir
 
 RUBY_VERSION_SUPPORTED= 18
 VERSION=		0.34
-RUBY_HAS_ARCHLIB=	yes
 USE_RUBY_EXTCONF=	yes
 INSTALL_TARGET=		site-install
 DOCS_EN=		README README.EXT doc/rbbr.rb
 DOCS_JA=		README.ja README.EXT.ja
 INSTALLATION_DIRS==	${RUBY_VENDORLIB} ${RUBY_EG}/gtk/doc \
 			${RUBY_EG}/gtk/test ${RUBY_EG}/gtk/testgtk
-PKG_DESTDIR_SUPPORT=	destdir
 
 post-install:
 	${INSTALL_DATA} ${WRKSRC}/sample/*.rb ${DESTDIR}${PREFIX}/${RUBY_EG}/gtk
diff --git a/x11/ruby-gtk/distinfo b/x11/ruby-gtk/distinfo
index 21dec740a50c..1ada578660d6 100644
--- a/x11/ruby-gtk/distinfo
+++ b/x11/ruby-gtk/distinfo
@@ -1,6 +1,7 @@
-$NetBSD: distinfo,v 1.8 2007/06/09 14:11:56 taca Exp $
+$NetBSD: distinfo,v 1.9 2010/09/10 13:36:15 taca Exp $
 
 SHA1 (ruby-gtk-0.34.tar.gz) = 395ed0396e5df0ae41383163b2ae2bdd51903604
 RMD160 (ruby-gtk-0.34.tar.gz) = 4339aad4ad732b2981a79003430af40ff5619704
 Size (ruby-gtk-0.34.tar.gz) = 283056 bytes
 SHA1 (patch-aa) = 8ab0f9eda6e07470eb5abcc119dd6320eb06166b
+SHA1 (patch-ab) = 026c254f342a908b99c9d2cf0ae009a1df71229e
diff --git a/x11/ruby-gtk/patches/patch-ab b/x11/ruby-gtk/patches/patch-ab
new file mode 100644
index 000000000000..552d9e654d84
--- /dev/null
+++ b/x11/ruby-gtk/patches/patch-ab
@@ -0,0 +1,63 @@
+$NetBSD: patch-ab,v 1.1 2010/09/10 13:36:15 taca Exp $
+
+Use RUBY_PLATFORM instead of obsolete PLATFORM.
+
+--- extconf.rb.orig	2003-07-06 17:20:37.000000000 +0000
++++ extconf.rb
+@@ -7,7 +7,7 @@ require "mkmf"
+ #
+ # detect GTK+ configurations
+ #
+-if /mswin32/ !~ PLATFORM
++if /mswin32/ !~ RUBY_PLATFORM
+   config_cmd = with_config("gtk-config", "gtk-config")
+  
+   begin
+@@ -55,9 +55,9 @@ begin
+   Dir.chdir "src"
+ 
+   lib_ary = []
+-  if /cygwin|mingw/ =~ PLATFORM
++  if /cygwin|mingw/ =~ RUBY_PLATFORM
+     $CFLAGS += " -fnative-struct -DNATIVE_WIN32" unless gdkx
+-  elsif /mswin32/ !~ PLATFORM
++  elsif /mswin32/ !~ RUBY_PLATFORM
+     lib_ary = [ ["X11", "XOpenDisplay"],
+                 ["Xext", "XShmQueryVersion"],
+                 ["Xi", "XOpenDevice"],
+@@ -94,7 +94,7 @@ begin
+     item.gsub(/\.c$/, obj_ext)
+   end
+ 
+-  if /mswin32/ =~ PLATFORM
++  if /mswin32/ =~ RUBY_PLATFORM
+     $objs << "rbgdkkeysyms.lib"
+   else
+     $objs << "librbgdkkeysyms.a"
+@@ -104,7 +104,7 @@ begin
+   raise Interrupt if not FileTest.exist? "Makefile"
+ 
+   mfile = File.open("Makefile", "a")
+-  if /mswin32/ =~ PLATFORM
++  if /mswin32/ =~ RUBY_PLATFORM
+     mfile.puts "	copy /Y  gtk.lib .."
+     mfile.puts
+   end
+@@ -115,7 +115,7 @@ begin
+   mfile.print "rbgdkconst#{obj_ext}: rbgdkconst.c rbgdkcursors.h\n"
+   mfile.print "rbgdk#{obj_ext}: rbgdk.c global.h\n"
+ 
+-  if /mswin32/ =~ PLATFORM
++  if /mswin32/ =~ RUBY_PLATFORM
+     mfile.print "\
+ rbgdkkeysyms.lib: makedefconst.rb rbgdkkeysyms.h
+ 	$(RUBY) makedefconst.rb rbgdkkeysyms.h Init_gtk_gdkkeysyms
+@@ -144,7 +144,7 @@ allclean: clean
+   Dir.chdir ".."
+ 
+   mfile = File.open("Makefile", "w")
+-  if /mswin32/ =~ PLATFORM
++  if /mswin32/ =~ RUBY_PLATFORM
+     mfile.print "\
+ 
+ all: