[ldns-users] building drill dies

[Chris Smith]

When trying to build drill with ldns (I'm using svn trunk) and the
Gentoo ebuild system the autoreconf dies with:
aclocal-1.10: couldn't open directory `m4': No such file or directory

I can remove the line:
ACLOCAL_AMFLAGS = -Im4
from drill's Makefile.in and all works fine.

Not a programmer so I don't know the best way to fix this, but I'm
guessing there should either be an m4 directory or that line should
not be there.

Chris