gcj code generations options affect the resulting ABI, and
so can only be meaningfully given when
libgcj, the runtime
package, is configured.
libgcj puts the appropriate options from
this group into a
spec file which is read by
options are listed here for completeness; if you are using
then you won't want to touch these options.
gcjto put an object marking descriptor into each vtable.
notify) is pointed to by a word in each object. With this option
gcjassumes that this information is stored in a hash table and not in the object itself.