(This only affects people who build novi from source – tarball or SRPM. If you use the prebuilt RPM binary, you can safely ignore this post.)
A sharp-eyed novi user has found a bug: under GCC 4.x (which ships with Fedora Core 4), the compiler chokes on some extraneous extern defs.
I plan to have a full release out soon. In the meantime, you can comment out the following lines:
src/main.cc:205 src/support_classes.cc:270