When I run the latest XEmacs, I get this message:
{pc-hrvoje}[~/work/emacs/build]$ ./src/xemacs
./src/xemacs: Symbol `toggleClassRec' has different size in shared object, consider
re-linking
./src/xemacs: Symbol `labelClassRec' has different size in shared object, consider
re-linking
Obviously, relinking doesn't help because this message comes from a
clean build. This might be in Olivier's area. The system is Linux
(latest Debian potato) with glibc-2.1.