It must have been the sequence of my actions. First I built everything with the old compiler. Saw that lib_finder wasn't compiled, so I re-ran configure to exclude lib_finder, recompiled & installed. That completed successfully, but when I tried to load code::blocks, it failed to load. That's when I realized I was using gcc3.3, so I changed my compiler links, ran "make clean", configured again to include everything, and so on...
But when I did that first "make clean", I was configured to exclude lib_finder so I guess the makefile wouldn't have cleaned that directory.
Oh, well... I guess it doesn't really matter. Everything seems to be working now.