I have tried to compile it on PowerPC (PowerBook G3) with kernel 2.6.20 with gentoo patches.
I need the rtl8180 driver, but it misses a lot of symbols related to ieee80211 in rtl8187 too.
In rtl8180, it complains about a missing symbol 'rtdsc'. This was always present in the old rtl8180-sa2400 code, but was somehow fixed in this code:
but the card did not find any AP with that driver though. Just wanted to mention this, as a working driver for that card for me would be excellent!