I don't know about these optimizations but I tried a stock gentoo ARM4 softfloat stage3 http://distfiles.gentoo.org/releases...090726.tar.bz2
or here

So anyway I used wget to download it and then (as root) tar -xjvf to untar it. Copied it to a SD card (used 8 gig because of "out of space error" with 2gig on environment update) must be formatted as ext3 (use GParted) with cp -R and popped in the card.

# umount /medika/mmcblk1p1
# mkdir /mnt/gentoo
# mount /dev/mmcblk1p1 /mnt/gentoo
# cd /mnt/gentoo
# mount -o bind /dev /mnt/gentoo/dev/
# mount -o bind /proc/ /mnt/gentoo/proc/
# chroot /mnt/gentoo

Now in chroot
#env-update
#source /etc/profile

compiled coreutils and copied uname program to OS2008 and ran it fine. Newer version knew i was on RX-44 while stock busybox version just outputted unknown.