dpkg.c:18: #error It looks like you are using libc5, which does not support
dpkg.c:19: #error tfind(). tfind() is used by busybox dpkg.
dpkg.c:20: #error Please disable BB_DPKG. Sorry.
This was fixed by changing the || to an && in the preprocessor.
(We've changed the logic in there too many times.)
Found using multibuild.pl.