Thx Meanie!
After added /mnt/card/devel/lib to /etc/ld.so.conf on ldconfig shows some errors linking libSDL because they are linked before, I think.
Well, libopcodes is not missing anymore. But I had to link libc_nonshared.a to /usr/lib manually. - And now, "Hello World" is showing on Zaurus' display.
But If I try to compile sources using qt, I get more errors...
Regards,
Frank