I'm writing some experimental cross-compile scripts. I'm not sure how it happened but at some point, clanlib 0.6 started automatically enabling lua support. I'm not sure why because I don't have lua installed and it failed to build because tolua.h was missing. Regardless of what voodoo magic my scripts might be doing, clanlib 0.6 needs to have the lua USE flag added since it is one of the configure options. I'm guessing, judging by the missing include, that it would need to depend on the tolua package. clanlib 0.7 doesn't seem to have lua bindings so you don't need to worry about that version.
thanks, should be fixed in cvs now