--- all_subdir_lib/libsysdecode ---
In file included from /usr/src/lib/libsysdecode/flags.c:90:
/usr/obj/usr/src/sparc64.sparc64/lib/libsysdecode/tables.h:948: error: 'IPV6_MIN_MEMBERSHIPS' undeclared here (not in a function)
Build will succeed after removing the temporary copy - /usr/obj/usr/src/sparc64.sparc64/lib/libsysdecode/tables.h
I also encountered the same error and removed to proceed.
Has there been any progress on this issue? During buildworld it's merely an annoyance, but it renders "make universe" nearly impossible.