Well, it's finally happened:  An install of -current bombed.

I did
	sh build.sh -D /usr/src/dest build > build.log 2>&1
and then
	sh build.sh -D /usr/src/dest install=/ > build.log 2>&1

This latter failed, and now everything gets
Shared object "libc.so.12" not found

# cd /lib
# echo libc.*
libc.so libc.so.12 libc.so.12.88 libc.so.12.89 libc.so.12.91 libc.so.12.95

Ah-hah!

Looks like libc.so.12.96 didn't get copied into /lib before the link got
updated.  Copying it in makes everything better.

install.log says:
Copying set base
pax: Unable to access ./lib/libc.so.12.95 <No such file or directory>
pax: Unable to access ./usr/lib/libc.so.12.95 <No such file or directory>

Thanks especially for /rescue, which got me through this difficult period.  :)

Seems to me that perhaps, during an install like this, symlinks should only
be updated if the new target already exists?

-s