Title:          toolchain64.tcz
Description:    64-bit toolchain
Version:        4.2.4
Author:         Various
Original-site:  http://gnu.org, kernel.org
Copying-policy: GPL
Size:      13.6M
Extension_by:   Curaga
Comments:       If you need something compiled 64-bit, this is the way.
      Either run toolchain64-shell, or start it from the menu;
      this sets up some variables so that you can build easier.
-
      Example:
      ./configure --host=x86_64-unknown-linux-gnu
-
      Note that this is a cross-compiler, and so there might 
      be some more difficulties compared to native compiling.
-
      This extension contains:
      - 2.6.32.7 kernel headers (GPL)
      - glibc 2.7 + patches (GPL)
      - gcc 4.2.4 + patches (GPL)
      - binutils 2.20 (GPL)
Change-log:     
Current:        2010/02/05 Original
Title:          toolchain64-lib.tcz
Description:    64-bit toolchain runtime libs
Version:        4.2.4
Author:         Various
Original-site:  http://gnu.org, kernel.org
Copying-policy: GPL
Size:      5.9M
Extension_by:   Curaga
Comments:       Runtime libs of the 64-bit toolchain.
Change-log:     
Current:        2010/02/05 Original
Pictoral proof:

So, looking to the future, here's a 64-bit cross-toolchain. I have tested it on busybox, wget, and the linux kernel.
Note that we accept no 64-bit extensions for the time being; nor can you run such without suitable hardware and kernel. This is for testing, and will be used to compile the 64-bit kernel for 3.x.
PS: Might take a while to upload, these have some mighty sources.