What flags are you building with? And what platform? Did you use both fresh builds from Maxima *and* ECL?
Maxima is building fine on all machines I have
Ok, do not trust that link but believe my word :-) Seems my server downloaded again and my patches for maxima were wiped out, but manual builds are ok. I can verify a more specific setup if you have a different kind of configuration settings, though -- I normally test with default builds or single-threaded ones.