I know little about Chinese input methods, but...
I have recently been working on getting Japanese input methods working with Opie, including IMKit, which supposedly also supports Chinese (pinyin traditional/simplified). At the moment it runs, though it still has bugs. I hope to work on it when I get more time (I'm currently getting ready to move).
As for ckeyboard, it appears rather old, so it was probably built for Opie back when OZ used an older version of the GNU gcc compiler (2.95); the current OZ/Opie is built with 3.4.4, which is incompatible. You might be able to get ckeyboard by recompiling it, but there's also a chance that the Opie API has changed since then.
- ashikase
- anpachi, gifu, japan (soon to be osaka)