OK, if you buy one, there is a simple method:
1.- Create an ext2 partition on memory card (400MB)
2.- Download arm rootstrap here: http://repository.maemo.org/stable/2...-rootstrap.tgz
3.- Open rootstrap and save on memory card
4.- Finally, open xterm:
# cd <ext2_rootstrap_mount_point>
# chroot .
# g++ --version

You will need some standard utilities like make, find and grep (not busybox ones) in order to compile general sources tarballs. Also need to setup a swap partition (gc high memory pressure for 770)

It works, slow, but works, and without changing the real root filesystem. It also compiles GUI aplications...I use it for cross-compile some programs like live-f1 (at maemo app. catalog).

Smith.